PDB Short entry for 1SI3 HEADER GENE REGULATION/RNA 27-FEB-04 1SI3 TITLE CRYSTAL STRUCTURE OF THE PAZ DOMAIN OF HUMAN EIF2C1 IN TITLE 2 COMPLEX WITH A 9-MER SIRNA-LIKE DUPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-R(*CP*GP*UP*GP*AP*CP*UP*CP*U)-3'; COMPND 3 CHAIN: B; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: EUKARYOTIC TRANSLATION INITIATION FACTOR 2C 1; COMPND 7 CHAIN: A; COMPND 8 FRAGMENT: PAZ DOMAIN (RESIDUES 225-369); COMPND 9 SYNONYM: EIF2C 1, EIF-2C 1, PUTATIVE RNA-BINDING PROTEIN COMPND 10 Q99, ARGONAUTE1; COMPND 11 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 MOL_ID: 2; SOURCE 4 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 5 ORGANISM_COMMON: HUMAN; SOURCE 6 ORGANISM_TAXID: 9606; SOURCE 7 GENE: EIF2C1; SOURCE 8 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 10 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 11 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 12 EXPRESSION_SYSTEM_PLASMID: PET19B KEYWDS PROTEIN-RNA COMPLEX, RNA INTERFERENCE, DOUBLE HELIX, KEYWDS 2 OVERHANG, GENE REGULATION/RNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR K.YE,J.B.MA,D.PATEL REVDAT 2 24-FEB-09 1SI3 1 VERSN REVDAT 1 25-MAY-04 1SI3 0 JRNL AUTH J.B.MA,K.YE,D.J.PATEL JRNL TITL STRUCTURAL BASIS FOR OVERHANG-SPECIFIC SMALL JRNL TITL 2 INTERFERING RNA RECOGNITION BY THE PAZ DOMAIN. JRNL REF NATURE V. 429 318 2004 JRNL REFN ISSN 0028-0836 JRNL PMID 15152257 JRNL DOI 10.1038/NATURE02519 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 2.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.83 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 93.6 REMARK 3 NUMBER OF REFLECTIONS : 5908 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 SET) : 0.247 REMARK 3 FREE R VALUE : 0.304 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 593 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.012 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) : 2.60 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.69 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 89.80 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 503 REMARK 3 BIN R VALUE (WORKING SET) : 0.3960 REMARK 3 BIN FREE R VALUE : 0.5010 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.30 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 58 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.066 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 977 REMARK 3 NUCLEIC ACID ATOMS : 185 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 15 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 59.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 58.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 3.73000 REMARK 3 B22 (A**2) : 3.73000 REMARK 3 B33 (A**2) : -7.47000 REMARK 3 B12 (A**2) : 4.90000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.41 REMARK 3 ESD FROM SIGMAA (A) : 0.48 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.59 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.58 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.20 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.17 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.600 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.770 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.900 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.000 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.32 REMARK 3 BSOL : 35.01 REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : DNA-RNA_REP.PARAM REMARK 3 PARAMETER FILE 3 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : DNA-RNA.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : ION.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SI3 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-MAR-04. REMARK 100 THE RCSB ID CODE IS RCSB021726. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-OCT-03 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 7.60 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 19-BM REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9796 REMARK 200 MONOCHROMATOR : SI 111 REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6431 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.600 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 12.600 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.11500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 28.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.69 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.66300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SAD REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD REMARK 200 SOFTWARE USED: CNS 1.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.49 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 1000, POTASSIUM CHLORIDE, HEPES REMARK 280 -NAOH, DITHIOTHREITOL, PH 7.60, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 64 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 -X,-Y,Z REMARK 290 5555 Y,-X+Y,Z+1/3 REMARK 290 6555 X-Y,X,Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 11.64433 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 23.28867 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 11.64433 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 23.28867 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 300 REMARK: THE BIOLOGICAL ASSEMBLE CONSISTS OF TWO PAZ DOMAINS REMARK 300 BOUND TO EACH END OF A 9-MER SIRNA-LIKE DUPLEX GENERATED FROM REMARK 300 THE PROTEIN MONOMER AND THE 9-MER SINGLE STRANDED RNA IN THE REMARK 300 ASYMMETRIC UNIT BY THE OPERATION: -X+1,-Y+2,Z. 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, 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 172.85694 REMARK 350 BIOMT3 2 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 GLY A 221 REMARK 465 SER A 222 REMARK 465 HIS A 223 REMARK 465 LEU A 296 REMARK 465 GLU A 297 REMARK 465 SER A 298 REMARK 465 GLY A 299 REMARK 465 GLN A 300 REMARK 465 THR A 301 REMARK 465 CYS A 350 REMARK 465 ILE A 351 REMARK 465 LYS A 352 REMARK 465 LYS A 353 REMARK 465 LEU A 354 REMARK 465 THR A 355 REMARK 465 ASP A 356 REMARK 465 ASN A 357 REMARK 465 GLN A 358 REMARK 465 THR A 359 REMARK 465 SER A 360 REMARK 465 THR A 361 REMARK 465 MSE A 362 REMARK 465 ILE A 363 REMARK 465 LYS A 364 REMARK 465 ALA A 365 REMARK 465 THR A 366 REMARK 465 ALA A 367 REMARK 465 ARG A 368 REMARK 465 SER A 369 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS(M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 MSE A 224 CG SE CE REMARK 470 GLN A 295 CG CD OE1 NE2 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 ASN A 240 38.44 -92.47 REMARK 500 PRO A 245 29.75 -79.10 REMARK 500 ASN A 281 171.60 176.21 REMARK 500 LYS A 333 -16.11 -160.35 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 U B 407 0.07 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1SI2 RELATED DB: PDB DBREF 1SI3 A 225 369 UNP Q9UL18 I2C1_HUMAN 225 369 DBREF 1SI3 B 401 409 PDB 1SI3 1SI3 401 409 SEQADV 1SI3 GLY A 221 UNP Q9UL18 CLONING ARTIFACT SEQADV 1SI3 SER A 222 UNP Q9UL18 CLONING ARTIFACT SEQADV 1SI3 HIS A 223 UNP Q9UL18 CLONING ARTIFACT SEQADV 1SI3 MSE A 224 UNP Q9UL18 CLONING ARTIFACT SEQADV 1SI3 MSE A 232 UNP Q9UL18 MET 232 MODIFIED RESIDUE SEQADV 1SI3 MSE A 273 UNP Q9UL18 MET 273 MODIFIED RESIDUE SEQADV 1SI3 MSE A 362 UNP Q9UL18 MET 362 MODIFIED RESIDUE SEQRES 1 B 9 C G U G A C U C U SEQRES 1 A 149 GLY SER HIS MSE ALA GLN PRO VAL ILE GLU PHE MSE CYS SEQRES 2 A 149 GLU VAL LEU ASP ILE ARG ASN ILE ASP GLU GLN PRO LYS SEQRES 3 A 149 PRO LEU THR ASP SER GLN ARG VAL ARG PHE THR LYS GLU SEQRES 4 A 149 ILE LYS GLY LEU LYS VAL GLU VAL THR HIS CYS GLY GLN SEQRES 5 A 149 MSE LYS ARG LYS TYR ARG VAL CYS ASN VAL THR ARG ARG SEQRES 6 A 149 PRO ALA SER HIS GLN THR PHE PRO LEU GLN LEU GLU SER SEQRES 7 A 149 GLY GLN THR VAL GLU CYS THR VAL ALA GLN TYR PHE LYS SEQRES 8 A 149 GLN LYS TYR ASN LEU GLN LEU LYS TYR PRO HIS LEU PRO SEQRES 9 A 149 CYS LEU GLN VAL GLY GLN GLU GLN LYS HIS THR TYR LEU SEQRES 10 A 149 PRO LEU GLU VAL CYS ASN ILE VAL ALA GLY GLN ARG CYS SEQRES 11 A 149 ILE LYS LYS LEU THR ASP ASN GLN THR SER THR MSE ILE SEQRES 12 A 149 LYS ALA THR ALA ARG SER MODRES 1SI3 MSE A 224 MET SELENOMETHIONINE MODRES 1SI3 MSE A 232 MET SELENOMETHIONINE MODRES 1SI3 MSE A 273 MET SELENOMETHIONINE HET MSE A 224 5 HET MSE A 232 8 HET MSE A 273 8 HETNAM MSE SELENOMETHIONINE FORMUL 2 MSE 3(C5 H11 N O2 SE) FORMUL 3 HOH *15(H2 O) HELIX 1 1 VAL A 228 ASP A 237 1 10 HELIX 2 2 THR A 249 LYS A 261 1 13 HELIX 3 3 VAL A 306 LYS A 313 1 8 SHEET 1 A 6 GLN A 226 PRO A 227 0 SHEET 2 A 6 CYS A 342 ILE A 344 -1 O ILE A 344 N GLN A 226 SHEET 3 A 6 LYS A 264 VAL A 267 -1 N GLU A 266 O ASN A 343 SHEET 4 A 6 LYS A 276 PRO A 286 -1 O TYR A 277 N VAL A 265 SHEET 5 A 6 PRO A 324 VAL A 328 -1 O CYS A 325 N THR A 283 SHEET 6 A 6 THR A 335 PRO A 338 -1 O LEU A 337 N LEU A 326 SHEET 1 B 2 THR A 291 PRO A 293 0 SHEET 2 B 2 GLU A 303 THR A 305 -1 O CYS A 304 N PHE A 292 LINK C MSE A 224 N ALA A 225 1555 1555 1.33 LINK C PHE A 231 N MSE A 232 1555 1555 1.33 LINK C MSE A 232 N CYS A 233 1555 1555 1.33 LINK C GLN A 272 N MSE A 273 1555 1555 1.32 LINK C MSE A 273 N LYS A 274 1555 1555 1.33 CRYST1 99.799 99.799 34.933 90.00 90.00 120.00 P 64 6 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 0.010020 0.005785 0.000000 0.00000 SCALE2 0.000000 0.011570 0.000000 0.00000 SCALE3 0.000000 0.000000 0.028626 0.00000