PDB Short entry for 1U6B HEADER STRUCTURAL PROTEIN/RNA 29-JUL-04 1U6B TITLE CRYSTAL STRUCTURE OF A SELF-SPLICING GROUP I INTRON WITH BOTH EXONS COMPND MOL_ID: 1; COMPND 2 MOLECULE: 197-MER; COMPND 3 CHAIN: B; COMPND 4 FRAGMENT: GROUP I INTRON; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: 5'-R(*AP*AP*GP*CP*CP*AP*CP*AP*CP*AP*AP*AP*CP*CP*AP*GP*AP*CP COMPND 8 *GP *GP*CP*C)-3'; COMPND 9 CHAIN: C; COMPND 10 FRAGMENT: GROUP I EXON; COMPND 11 ENGINEERED: YES; COMPND 12 MOL_ID: 3; COMPND 13 MOLECULE: 5'-R(*CP*AP*(5MU))-3'; COMPND 14 CHAIN: D; COMPND 15 ENGINEERED: YES; COMPND 16 MOL_ID: 4; COMPND 17 MOLECULE: U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A; COMPND 18 CHAIN: A; COMPND 19 SYNONYM: U1 SNRNP PROTEIN A, U1A PROTEIN, U1-A; COMPND 20 ENGINEERED: YES; COMPND 21 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: RNA WAS IS TRANSCRIBED BY T7 RNA POLYMERASE.; SOURCE 4 MOL_ID: 2; SOURCE 5 SYNTHETIC: YES; SOURCE 6 MOL_ID: 3; SOURCE 7 SYNTHETIC: YES; SOURCE 8 MOL_ID: 4; SOURCE 9 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 10 ORGANISM_COMMON: HUMAN; SOURCE 11 ORGANISM_TAXID: 9606; SOURCE 12 GENE: SNRPA; SOURCE 13 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 14 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 15 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 16 EXPRESSION_SYSTEM_PLASMID: PET11 KEYWDS INTRON, EXON, RIBOZYME, GROUP I, U1A, RNA, STRUCTURAL PROTEIN-RNA KEYWDS 2 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR P.L.ADAMS,M.R.STAHLEY,A.B.KOSEK,J.WANG,S.A.STROBEL REVDAT 6 14-FEB-24 1U6B 1 REMARK REVDAT 5 20-OCT-21 1U6B 1 REMARK SEQADV LINK REVDAT 4 13-JUL-11 1U6B 1 VERSN REVDAT 3 07-JUL-09 1U6B 1 REMARK REVDAT 2 24-FEB-09 1U6B 1 VERSN REVDAT 1 10-AUG-04 1U6B 0 SPRSDE 10-AUG-04 1U6B 1T42 JRNL AUTH P.L.ADAMS,M.R.STAHLEY,A.B.KOSEK,J.WANG,S.A.STROBEL JRNL TITL CRYSTAL STRUCTURE OF A SELF-SPLICING GROUP I INTRON WITH JRNL TITL 2 BOTH EXONS. JRNL REF NATURE V. 430 45 2004 JRNL REFN ISSN 0028-0836 JRNL PMID 15175762 JRNL DOI 10.1038/NATURE02642 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH P.L.ADAMS,M.R.STAHELY,M.L.GILL,C.BERMAN,A.B.KOSEK,J.WANG, REMARK 1 AUTH 2 S.A.STROBEL REMARK 1 TITL CRYSTAL STRUCTURE OF A GROUP I INTRON SPLICING INTERMEDIATE REMARK 1 REF TO BE PUBLISHED REMARK 1 REFN REMARK 1 REFERENCE 2 REMARK 1 AUTH S.A.STROBEL,P.L.ADAMS,M.R.STAHLEY,J.WANG REMARK 1 TITL RNA KINK TURNS TO THE LEFT AND TO THE RIGHT REMARK 1 REF TO BE PUBLISHED REMARK 1 REFN REMARK 1 REFERENCE 3 REMARK 1 AUTH T.R.CECH,A.J.ZAUG,P.J.GRABOWASKI REMARK 1 TITL IN VITRO SPLICING OF THE RIBOSOMAL RNA PRECURSOR OF REMARK 1 TITL 2 TETRAHYMENA: INVOLVEMENT OF A GUANOSINE NUCLEOTIDE IN THE REMARK 1 TITL 3 EXCISION OF INTERVENING SEQUENCE REMARK 1 REF CELL(CAMBRIDGE,MASS.) V. 27 487 1981 REMARK 1 REFN ISSN 0092-8674 REMARK 1 REFERENCE 4 REMARK 1 AUTH B.REINHOLD-HUREK,D.A.SHUB REMARK 1 TITL SELF-SPLICING INTRON IN TRNA GENES OF WIDELY DIVERGENT REMARK 1 TITL 2 BACTERIA REMARK 1 REF NATURE V. 357 173 1992 REMARK 1 REFN ISSN 0028-0836 REMARK 2 REMARK 2 RESOLUTION. 3.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.24 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 3.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 48.22 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 89.6 REMARK 3 NUMBER OF REFLECTIONS : 23553 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.247 REMARK 3 R VALUE (WORKING SET) : 0.246 REMARK 3 FREE R VALUE : 0.279 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.400 REMARK 3 FREE R VALUE TEST SET COUNT : 1086 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 3.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 3.27 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2660 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.3200 REMARK 3 BIN FREE R VALUE SET COUNT : 131 REMARK 3 BIN FREE R VALUE : 0.3750 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 775 REMARK 3 NUCLEIC ACID ATOMS : 4768 REMARK 3 HETEROGEN ATOMS : 18 REMARK 3 SOLVENT ATOMS : 54 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 80.42 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.60000 REMARK 3 B22 (A**2) : 0.60000 REMARK 3 B33 (A**2) : -1.19000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 1.805 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.444 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.382 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 22.650 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.881 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.872 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 6118 ; 0.006 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 9357 ; 1.333 ; 2.883 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 94 ; 3.257 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 1000 ; 0.107 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2899 ; 0.004 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 2607 ; 0.188 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 227 ; 0.176 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 12 ; 0.139 ; 0.200 REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 31 ; 0.154 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 4 ; 0.131 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 476 ; 1.158 ; 3.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 771 ; 2.136 ; 4.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 5642 ; 2.425 ; 5.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 8586 ; 4.280 ; 8.000 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 4 A 98 REMARK 3 ORIGIN FOR THE GROUP (A): 42.8243 86.5701 61.9647 REMARK 3 T TENSOR REMARK 3 T11: 0.3316 T22: 0.1048 REMARK 3 T33: 0.2601 T12: -0.1263 REMARK 3 T13: 0.2437 T23: -0.0604 REMARK 3 L TENSOR REMARK 3 L11: 0.7126 L22: -0.0291 REMARK 3 L33: 0.1295 L12: -0.1026 REMARK 3 L13: 0.1122 L23: -0.0227 REMARK 3 S TENSOR REMARK 3 S11: -0.1133 S12: 0.0084 S13: -0.3508 REMARK 3 S21: -0.0406 S22: 0.0706 S23: -0.0343 REMARK 3 S31: -0.0699 S32: 0.0939 S33: 0.0426 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1U6B COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-JUL-04. REMARK 100 THE DEPOSITION ID IS D_1000023299. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-JUL-03 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 6.80 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X25 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.1 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 24640 REMARK 200 RESOLUTION RANGE HIGH (A) : 3.100 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: MAD REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD REMARK 200 SOFTWARE USED: MLPHARE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 72.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.80 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y,X,Z+1/4 REMARK 290 4555 Y,-X,Z+3/4 REMARK 290 5555 -X,Y,-Z REMARK 290 6555 X,-Y,-Z+1/2 REMARK 290 7555 Y,X,-Z+3/4 REMARK 290 8555 -Y,-X,-Z+1/4 REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 124.57900 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 62.28950 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 186.86850 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 124.57900 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 186.86850 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 62.28950 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, C, D, A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A 1 REMARK 465 ALA A 2 REMARK 465 VAL A 3 REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 A C 205 O2' REMARK 480 G C 206 O2' REMARK 480 A C 1 O2' REMARK 480 5MU D 1 O2' REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O3' A B 87 O2' 5MU D 1 2.19 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 A C 205 C2' A C 205 O2' -0.088 REMARK 500 G C 206 C2' G C 206 O2' 0.468 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 G B 37 C3' - O3' - P ANGL. DEV. = 11.5 DEGREES REMARK 500 A B 81 C1' - O4' - C4' ANGL. DEV. = -5.0 DEGREES REMARK 500 A B 106 C3' - O3' - P ANGL. DEV. = -10.2 DEGREES REMARK 500 G B 107 OP1 - P - OP2 ANGL. DEV. = -10.0 DEGREES REMARK 500 C B1001 OP1 - P - OP2 ANGL. DEV. = -10.4 DEGREES REMARK 500 C B1007 C3' - O3' - P ANGL. DEV. = 8.9 DEGREES REMARK 500 U B 126 C3' - O3' - P ANGL. DEV. = 8.8 DEGREES REMARK 500 G B 135 O4' - C1' - N9 ANGL. DEV. = 5.7 DEGREES REMARK 500 C B 137 C3' - O3' - P ANGL. DEV. = 8.7 DEGREES REMARK 500 C B 171 O4' - C1' - N1 ANGL. DEV. = 4.6 DEGREES REMARK 500 G B 189 O3' - P - OP2 ANGL. DEV. = 8.2 DEGREES REMARK 500 G C 206 C1' - C2' - O2' ANGL. DEV. = -25.0 DEGREES REMARK 500 G C 206 C3' - C2' - O2' ANGL. DEV. = -18.3 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 THR A 6 -135.17 -110.37 REMARK 500 PRO A 8 135.34 -37.22 REMARK 500 ARG A 36 23.67 -71.30 REMARK 500 LEU A 41 -116.63 -87.31 REMARK 500 MET A 82 107.48 -49.61 REMARK 500 MET A 97 -31.44 -136.96 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K B 2 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 A B 87 OP1 REMARK 620 2 A B 127 O3' 108.4 REMARK 620 3 G B 128 OP1 63.9 55.7 REMARK 620 4 G B 128 O5' 108.1 46.1 46.2 REMARK 620 5 A B 172 OP2 122.5 100.1 153.2 127.2 REMARK 620 6 HOH B1030 O 52.5 61.0 52.0 89.5 108.6 REMARK 620 7 HOH C 101 O 80.2 168.4 135.8 139.9 68.4 122.9 REMARK 620 8 G C 206 O2' 134.5 117.0 144.0 101.2 53.4 161.9 55.4 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B 3 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 U B 173 OP2 REMARK 620 2 A B 174 OP2 75.5 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K B 4 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 A B 149 O3' REMARK 620 2 A B 149 O2' 48.3 REMARK 620 3 A B 150 OP2 43.3 79.8 REMARK 620 4 G B 151 N7 92.4 100.2 119.1 REMARK 620 5 G B 151 O6 101.3 67.4 144.0 56.3 REMARK 620 6 G B 152 O6 159.1 112.9 154.7 81.4 58.7 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K B1016 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 U B 9 O4 REMARK 620 2 G B 10 O6 87.5 REMARK 620 3 HOH B1032 O 69.4 126.9 REMARK 620 4 A C 1 N6 45.0 60.3 70.2 REMARK 620 5 5MU D 1 O4 103.2 65.4 74.1 59.8 REMARK 620 6 A D 2 N6 146.5 59.1 130.9 110.5 66.5 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1029 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 U B 15 OP1 REMARK 620 2 HOH B1074 O 68.0 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K B1017 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 G B 23 O6 REMARK 620 2 G B 23 N7 51.3 REMARK 620 3 G B 24 O6 73.4 94.4 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1024 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 G B 37 O2' REMARK 620 2 G B 38 OP2 49.5 REMARK 620 3 A B 39 OP2 127.8 104.8 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1025 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 A B 48 OP2 REMARK 620 2 U B 133 OP2 144.8 REMARK 620 3 HOH B1054 O 77.3 136.4 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1018 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 C B 88 OP1 REMARK 620 2 G B 170 OP1 65.6 REMARK 620 3 A B 172 OP2 137.1 134.4 REMARK 620 4 A B 172 OP1 115.8 73.9 60.6 REMARK 620 5 A C 1 OP2 112.9 123.0 87.7 130.9 REMARK 620 6 5MU D 1 O3' 64.6 65.6 151.6 134.7 64.4 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K B1015 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 U B 124 OP1 REMARK 620 2 U B 126 O2' 140.1 REMARK 620 3 U B 126 O2 139.5 52.4 REMARK 620 4 A B 127 OP2 107.9 44.0 96.4 REMARK 620 5 C B 171 OP2 57.5 130.0 156.6 89.7 REMARK 620 6 C B 171 O5' 108.0 96.7 106.7 82.7 51.5 REMARK 620 7 HOH B1035 O 82.9 119.5 67.6 162.8 107.5 107.1 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1023 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 U B 124 OP1 REMARK 620 2 C B 171 OP2 85.3 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B1027 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 G B 125 OP1 REMARK 620 2 HOH B1061 O 103.1 REMARK 620 3 HOH B1073 O 89.6 79.1 REMARK 620 N 1 2 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 2 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 4 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 1015 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 1016 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 1017 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1018 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 3 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1019 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1020 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1023 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1024 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1025 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1026 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1027 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1028 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 1029 REMARK 999 REMARK 999 SEQUENCE NUCLEOTIDES 1001B TO 1014B BELONG TO AN ENGINEERED U1A REMARK 999 LOOP AND ARE INSERTED BETWEEN GUA-107B AND CYT-112B. THERE ARE REMARK 999 NO NUCLEOTIDES BETWEEN GUA-1B AND GUA-5B DUE TO A CLONING REMARK 999 DESIGN. O2' OF DEOXY MODIFICATION OF RNA NUCLEOTIDES ARE REMARK 999 INCLUDED WITH Q=0.00 AND B=0.00. THEY ARE AT GUA-206C, CYT-1C, REMARK 999 CYT-205C, AND THY-1D. CHAINS B AND C ARE TWO PARTS OF THE REMARK 999 ORIGINAL ONE INTRON SEQUENCE BECAUSE OF AN EXPERIMENTAL DESIGN. REMARK 999 THE U1A PROTEIN USED IN THIS STUDY WAS A DOUBLE MUTANT IN WHICH REMARK 999 TYR-31/GLN-36 WAS REPLACED WITH HIS-31/ARG-36. THE FIRST THREE REMARK 999 RESIDUES IN U1A PROTEIN WERE MISSING IN THE STRUCTURE. DBREF 1U6B A 1 98 UNP P09012 RU1A_HUMAN 1 98 DBREF 1U6B B 1 190 PDB 1U6B 1U6B 1 190 DBREF 1U6B C 191 6 PDB 1U6B 1U6B 191 6 DBREF 1U6B D 3 1 PDB 1U6B 1U6B 3 1 SEQADV 1U6B HIS A 31 UNP P09012 TYR 31 ENGINEERED MUTATION SEQADV 1U6B ARG A 36 UNP P09012 GLN 36 ENGINEERED MUTATION SEQRES 1 B 197 GTP G C C G U G U G C C U U SEQRES 2 B 197 G C G C C G G G A A A C C SEQRES 3 B 197 A C G C A A G G G A U G G SEQRES 4 B 197 U G U C A A A U U C G G C SEQRES 5 B 197 G A A A C C U A A G C G C SEQRES 6 B 197 C C G C C C G G G C G U A SEQRES 7 B 197 U G G C A A C G C C G A G SEQRES 8 B 197 C C A A G C U U C G C A G SEQRES 9 B 197 C C A U U G C A C U C C G SEQRES 10 B 197 G C U G C G A U G A A G G SEQRES 11 B 197 U G U A G A G A C U A G A SEQRES 12 B 197 C G G C A C C C A C C U A SEQRES 13 B 197 A G G C A A A C G C U A U SEQRES 14 B 197 G G U G A A G G C A U A G SEQRES 15 B 197 U C C A G G G A G U G G C SEQRES 16 B 197 G A23 SEQRES 1 C 22 A A G C C A C A C A A A C SEQRES 2 C 22 C A G A C G G C C SEQRES 1 D 3 C A 5MU SEQRES 1 A 98 MET ALA VAL PRO GLU THR ARG PRO ASN HIS THR ILE TYR SEQRES 2 A 98 ILE ASN ASN LEU ASN GLU LYS ILE LYS LYS ASP GLU LEU SEQRES 3 A 98 LYS LYS SER LEU HIS ALA ILE PHE SER ARG PHE GLY GLN SEQRES 4 A 98 ILE LEU ASP ILE LEU VAL SER ARG SER LEU LYS MET ARG SEQRES 5 A 98 GLY GLN ALA PHE VAL ILE PHE LYS GLU VAL SER SER ALA SEQRES 6 A 98 THR ASN ALA LEU ARG SER MET GLN GLY PHE PRO PHE TYR SEQRES 7 A 98 ASP LYS PRO MET ARG ILE GLN TYR ALA LYS THR ASP SER SEQRES 8 A 98 ASP ILE ILE ALA LYS MET LYS MODRES 1U6B GTP B 1 G GUANOSINE-5'-TRIPHOSPHATE MODRES 1U6B A23 B 190 A MODRES 1U6B 5MU D 1 U 5-METHYLURIDINE 5'-MONOPHOSPHATE HET GTP B 1 32 HET A23 B 190 25 HET 5MU D 1 21 HET K B 2 1 HET K B 4 1 HET K B1015 1 HET K B1016 1 HET K B1017 1 HET MG B1018 1 HET MG B 3 1 HET MG B1019 1 HET MG B1020 1 HET MG B1021 1 HET MG B1022 1 HET MG B1023 1 HET MG B1024 1 HET MG B1025 1 HET MG B1026 1 HET MG B1027 1 HET MG B1028 1 HET MG B1029 1 HETNAM GTP GUANOSINE-5'-TRIPHOSPHATE HETNAM A23 ADENOSINE-5'-PHOSPHATE-2',3'-CYCLIC PHOSPHATE HETNAM 5MU 5-METHYLURIDINE 5'-MONOPHOSPHATE HETNAM K POTASSIUM ION HETNAM MG MAGNESIUM ION FORMUL 1 GTP C10 H16 N5 O14 P3 FORMUL 1 A23 C10 H13 N5 O9 P2 FORMUL 3 5MU C10 H15 N2 O9 P FORMUL 5 K 5(K 1+) FORMUL 10 MG 13(MG 2+) FORMUL 23 HOH *54(H2 O) HELIX 1 1 LYS A 22 ALA A 32 1 11 HELIX 2 2 GLU A 61 MET A 72 1 12 HELIX 3 3 SER A 91 LYS A 96 1 6 SHEET 1 A 4 ILE A 40 VAL A 45 0 SHEET 2 A 4 ALA A 55 PHE A 59 -1 O ILE A 58 N LEU A 41 SHEET 3 A 4 THR A 11 ASN A 15 -1 N ILE A 14 O ALA A 55 SHEET 4 A 4 ARG A 83 TYR A 86 -1 O ARG A 83 N ASN A 15 SHEET 1 B 2 PRO A 76 PHE A 77 0 SHEET 2 B 2 LYS A 80 PRO A 81 -1 O LYS A 80 N PHE A 77 LINK O3' GTP B 1 P G B 5 1555 1555 1.59 LINK O3' G B 189 P A23 B 190 1555 1555 1.61 LINK P 5MU D 1 O3' A D 2 1555 1555 1.59 LINK P A D 2 O3' C D 3 1555 1555 1.61 LINK K K B 2 OP1 A B 87 1555 1555 2.72 LINK K K B 2 O3' A B 127 1555 1555 2.73 LINK K K B 2 OP1 G B 128 1555 1555 2.61 LINK K K B 2 O5' G B 128 1555 1555 3.48 LINK K K B 2 OP2 A B 172 1555 1555 3.12 LINK K K B 2 O HOH B1030 1555 1555 2.96 LINK K K B 2 O HOH C 101 1555 1555 2.68 LINK K K B 2 O2' G C 206 1555 1555 2.72 LINK MG MG B 3 OP2 U B 173 1555 1555 2.30 LINK MG MG B 3 OP2 A B 174 1555 1555 2.11 LINK K K B 4 O3' A B 149 1555 1555 3.61 LINK K K B 4 O2' A B 149 1555 1555 2.68 LINK K K B 4 OP2 A B 150 1555 1555 2.54 LINK K K B 4 N7 G B 151 1555 1555 2.93 LINK K K B 4 O6 G B 151 1555 1555 3.40 LINK K K B 4 O6 G B 152 1555 1555 3.01 LINK O4 U B 9 K K B1016 1555 1555 2.78 LINK O6 G B 10 K K B1016 1555 1555 3.16 LINK OP1 U B 15 MG MG B1029 1555 1555 2.24 LINK O6 G B 23 K K B1017 1555 1555 3.42 LINK N7 G B 23 K K B1017 1555 1555 3.63 LINK O6 G B 24 K K B1017 1555 1555 3.01 LINK O2' G B 37 MG MG B1024 1555 1555 2.93 LINK OP2 G B 38 MG MG B1024 1555 1555 1.84 LINK OP2 A B 39 MG MG B1024 1555 1555 2.38 LINK OP2 A B 48 MG MG B1025 1555 1555 2.59 LINK OP2 C B 74 MG MG B1026 1555 1555 2.34 LINK OP1 C B 88 MG MG B1018 1555 1555 2.26 LINK OP1 U B 124 K K B1015 1555 1555 3.32 LINK OP1 U B 124 MG MG B1023 1555 1555 2.09 LINK OP1 G B 125 MG MG B1027 1555 1555 2.73 LINK O2' U B 126 K K B1015 1555 1555 3.01 LINK O2 U B 126 K K B1015 1555 1555 3.66 LINK OP1 U B 126 MG MG B1019 1555 1555 1.82 LINK OP2 A B 127 K K B1015 1555 1555 3.39 LINK OP2 U B 133 MG MG B1025 1555 1555 2.75 LINK OP1 G B 170 MG MG B1018 1555 1555 2.51 LINK OP2 C B 171 K K B1015 1555 1555 2.77 LINK O5' C B 171 K K B1015 1555 1555 2.89 LINK OP2 C B 171 MG MG B1023 1555 1555 2.28 LINK OP2 A B 172 MG MG B1018 1555 1555 2.82 LINK OP1 A B 172 MG MG B1018 1555 1555 2.13 LINK OP1 G B 181 MG MG B1028 1555 1555 2.57 LINK K K B1015 O HOH B1035 1555 1555 3.61 LINK K K B1016 O HOH B1032 1555 1555 3.13 LINK K K B1016 N6 A C 1 1555 1555 3.65 LINK K K B1016 O4 5MU D 1 1555 1555 3.03 LINK K K B1016 N6 A D 2 1555 1555 2.98 LINK MG MG B1018 OP2 A C 1 1555 1555 2.30 LINK MG MG B1018 O3' 5MU D 1 1555 1555 2.44 LINK MG MG B1020 O HOH B1071 1555 1555 1.98 LINK MG MG B1025 O HOH B1054 1555 1555 2.97 LINK MG MG B1027 O HOH B1061 1555 1555 2.59 LINK MG MG B1027 O HOH B1073 1555 1555 1.76 LINK MG MG B1029 O HOH B1074 1555 1555 2.69 SITE 1 AC1 6 A B 87 A B 127 G B 128 A B 172 SITE 2 AC1 6 HOH B1030 HOH C 101 SITE 1 AC2 4 A B 149 A B 150 G B 151 G B 152 SITE 1 AC3 4 U B 124 U B 126 A B 127 C B 171 SITE 1 AC4 5 U B 9 G B 10 A C 1 5MU D 1 SITE 2 AC4 5 A D 2 SITE 1 AC5 2 G B 23 G B 24 SITE 1 AC6 5 C B 88 G B 170 A B 172 A C 1 SITE 2 AC6 5 5MU D 1 SITE 1 AC7 3 A B 172 U B 173 A B 174 SITE 1 AC8 2 G B 125 U B 126 SITE 1 AC9 1 HOH B1071 SITE 1 BC1 2 U B 124 C B 171 SITE 1 BC2 3 G B 37 G B 38 A B 39 SITE 1 BC3 3 A B 48 U B 133 HOH B1054 SITE 1 BC4 2 C B 73 C B 74 SITE 1 BC5 4 U B 51 G B 125 HOH B1061 HOH B1073 SITE 1 BC6 2 G B 181 G B 182 SITE 1 BC7 3 U B 15 C B 29 HOH B1074 CRYST1 108.541 108.541 249.158 90.00 90.00 90.00 P 41 2 2 8 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 0.009213 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009213 0.000000 0.00000 SCALE3 0.000000 0.000000 0.004014 0.00000 HETATM 1 PG GTP B 1 67.536 74.584 50.449 1.00144.97 P HETATM 2 O1G GTP B 1 67.219 73.111 50.385 1.00142.79 O HETATM 3 O2G GTP B 1 66.648 75.502 49.666 1.00143.28 O HETATM 4 O3G GTP B 1 68.985 74.856 50.255 1.00142.20 O HETATM 5 O3B GTP B 1 67.204 75.078 51.983 1.00140.60 O HETATM 6 PB GTP B 1 67.956 74.679 53.391 1.00137.13 P HETATM 7 O1B GTP B 1 69.391 75.079 53.342 1.00132.50 O HETATM 8 O2B GTP B 1 67.140 75.232 54.528 1.00135.77 O HETATM 9 O3A GTP B 1 67.774 73.047 53.579 1.00129.55 O HETATM 10 PA GTP B 1 68.782 72.131 52.927 1.00125.34 P HETATM 11 O1A GTP B 1 68.060 71.123 52.108 1.00125.01 O HETATM 12 O2A GTP B 1 69.705 72.887 52.044 1.00125.40 O HETATM 13 O5' GTP B 1 69.573 71.427 53.963 1.00114.36 O HETATM 14 C5' GTP B 1 70.371 72.348 54.688 1.00 95.81 C HETATM 15 C4' GTP B 1 71.814 71.951 54.841 1.00 91.57 C HETATM 16 O4' GTP B 1 72.491 71.998 53.560 1.00 86.92 O HETATM 17 C3' GTP B 1 72.604 72.919 55.683 1.00 89.43 C HETATM 18 O3' GTP B 1 72.369 72.673 57.043 1.00 94.59 O HETATM 19 C2' GTP B 1 74.037 72.682 55.231 1.00 83.50 C HETATM 20 O2' GTP B 1 74.626 71.526 55.795 1.00 76.18 O HETATM 21 C1' GTP B 1 73.824 72.469 53.735 1.00 79.48 C HETATM 22 N9 GTP B 1 73.964 73.707 52.975 1.00 69.48 N HETATM 23 C8 GTP B 1 72.969 74.374 52.303 1.00 66.30 C HETATM 24 N7 GTP B 1 73.396 75.432 51.675 1.00 59.63 N HETATM 25 C5 GTP B 1 74.749 75.474 51.957 1.00 55.20 C HETATM 26 C6 GTP B 1 75.715 76.387 51.541 1.00 52.37 C HETATM 27 O6 GTP B 1 75.559 77.360 50.818 1.00 57.34 O HETATM 28 N1 GTP B 1 76.971 76.081 52.044 1.00 46.19 N HETATM 29 C2 GTP B 1 77.252 75.006 52.858 1.00 53.14 C HETATM 30 N2 GTP B 1 78.539 74.866 53.245 1.00 50.26 N HETATM 31 N3 GTP B 1 76.339 74.129 53.263 1.00 53.78 N HETATM 32 C4 GTP B 1 75.116 74.425 52.769 1.00 60.83 C