PDB Short entry for 1KUV HEADER TRANSFERASE 22-JAN-02 1KUV TITLE X-RAY CRYSTALLOGRAPHIC STUDIES OF SEROTONIN N-ACETYLTRANSFERASE TITLE 2 CATALYSIS AND INHIBITION COMPND MOL_ID: 1; COMPND 2 MOLECULE: SEROTONIN N-ACETYLTRANSFERASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ARYLALKYLAMINE N-ACETYLTRANSFERASE; ARALKYLAMINE N- COMPND 5 ACETYLTRANSFERASE; AA-NAT; SEROTONIN ACETYLASE; COMPND 6 EC: 2.3.1.87; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: OVIS ARIES; SOURCE 3 ORGANISM_COMMON: SHEEP; SOURCE 4 ORGANISM_TAXID: 9940; SOURCE 5 GENE: U29663; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)PLYSS; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PGEX-6P-1 KEYWDS ENZYME-INHIBITOR COMPLEX, BISUBSTRATE ANALOG, ALTERNATE KEYWDS 2 CONFORMATIONS, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR E.WOLF,J.DE ANGELIS,E.M.KHALIL,P.A.COLE,S.K.BURLEY REVDAT 6 14-FEB-24 1KUV 1 REMARK REVDAT 5 03-FEB-21 1KUV 1 AUTHOR JRNL REMARK REVDAT 4 11-OCT-17 1KUV 1 REMARK REVDAT 3 16-NOV-11 1KUV 1 VERSN HETATM REVDAT 2 24-FEB-09 1KUV 1 VERSN REVDAT 1 22-MAR-02 1KUV 0 JRNL AUTH E.WOLF,J.DE ANGELIS,E.M.KHALIL,P.A.COLE,S.K.BURLEY JRNL TITL X-RAY CRYSTALLOGRAPHIC STUDIES OF SEROTONIN JRNL TITL 2 N-ACETYLTRANSFERASE CATALYSIS AND INHIBITION. JRNL REF J.MOL.BIOL. V. 317 215 2002 JRNL REFN ISSN 0022-2836 JRNL PMID 11902838 JRNL DOI 10.1006/JMBI.2001.5371 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 25.00 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) (%) : 90.7 REMARK 3 NUMBER OF REFLECTIONS : 10402 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) : 0.203 REMARK 3 FREE R VALUE : 0.250 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1055 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1312 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 65 REMARK 3 SOLVENT ATOMS : 167 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 6.94300 REMARK 3 B22 (A**2) : -13.23600 REMARK 3 B33 (A**2) : 6.29300 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 COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.270 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.890 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : 1.940 ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.950 ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 STRUCTURE WAS SOLVED BASED ON MAD DATA COLLECTED IN THE VICINITY OF REMARK 3 THE BROMINE AND SELENIUM EDGES. LIGAND DENSITY WAS IDENTIFIED BY REMARK 3 DIFFERENCE FOURIER. THE FINAL MODEL (PROTEIN AND LIGAND) WAS REMARK 3 REFINED REMARK 3 AT 2.0 ANGSTROM REMARK 4 REMARK 4 1KUV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-JAN-02. REMARK 100 THE DEPOSITION ID IS D_1000015365. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 23-MAR-99; 06-JAN-99 REMARK 200 TEMPERATURE (KELVIN) : 100.0; NULL REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 2 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y; Y REMARK 200 RADIATION SOURCE : NSLS; CHESS REMARK 200 BEAMLINE : X25; F1 REMARK 200 X-RAY GENERATOR MODEL : NULL; NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M; M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97946, 0.97927, 0.92011, REMARK 200 0.91970; 0.9100 REMARK 200 MONOCHROMATOR : SI 111; SI 111 REMARK 200 OPTICS : NULL; NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD; CCD REMARK 200 DETECTOR MANUFACTURER : BRANDEIS - B4; ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MARMAD, DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10517 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 25.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 91.5 REMARK 200 DATA REDUNDANCY : 8.300 REMARK 200 R MERGE (I) : 0.08900 REMARK 200 R SYM (I) : 0.08900 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 16.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 79.5 REMARK 200 DATA REDUNDANCY IN SHELL : 5.00 REMARK 200 R MERGE FOR SHELL (I) : 0.12300 REMARK 200 R SYM FOR SHELL (I) : 0.12300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 9.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: MAD; SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD REMARK 200 SOFTWARE USED: SNB, MLPHARE, DM REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 30.81 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.78 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 2000, MPD, AMMONIUM SULFATE, MES REMARK 280 PH 6.5, MAGNESIUM ACETATE, DTT, SPERMIDINE, AND LITHIUM REMARK 280 CHLORIDE. VAPOR DIFFUSION, HANGING DROP AT 277K, TEMPERATURE REMARK 280 277.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 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 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 X+1/2,-Y+1/2,-Z 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 44.86250 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 44.86250 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 1.000000 0.000000 0.000000 26.65650 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 34.35800 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 26.65650 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 34.35800 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 44.86250 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 26.65650 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 34.35800 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 44.86250 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 26.65650 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 34.35800 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 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 ASSEMBLY IS A MONOMER 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A1027 LIES ON A SPECIAL POSITION. 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 SER A 2 REMARK 465 THR A 3 REMARK 465 PRO A 4 REMARK 465 SER A 5 REMARK 465 VAL A 6 REMARK 465 HIS A 7 REMARK 465 CYS A 8 REMARK 465 LEU A 9 REMARK 465 LYS A 10 REMARK 465 PRO A 11 REMARK 465 SER A 12 REMARK 465 PRO A 13 REMARK 465 LEU A 14 REMARK 465 HIS A 15 REMARK 465 LEU A 16 REMARK 465 PRO A 17 REMARK 465 SER A 18 REMARK 465 GLY A 19 REMARK 465 ILE A 20 REMARK 465 PRO A 21 REMARK 465 GLY A 22 REMARK 465 SER A 23 REMARK 465 PRO A 24 REMARK 465 GLY A 25 REMARK 465 ARG A 26 REMARK 465 GLN A 27 REMARK 465 ARG A 28 REMARK 465 ARG A 29 REMARK 465 ARG A 196 REMARK 465 GLY A 197 REMARK 465 HIS A 198 REMARK 465 ALA A 199 REMARK 465 ALA A 200 REMARK 465 LEU A 201 REMARK 465 ARG A 202 REMARK 465 ARG A 203 REMARK 465 ASN A 204 REMARK 465 SER A 205 REMARK 465 ASP A 206 REMARK 465 ARG A 207 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH A 1065 O HOH A 1065 3655 1.63 REMARK 500 O HOH A 1025 O HOH A 1025 4555 2.12 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 SER A 60 -4.43 -140.91 REMARK 500 GLN A 133 45.50 -145.45 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA5 A 901 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1BO4 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF A GCN5-RELATED N-ACETYLTRANSFERASE: SERRATIA REMARK 900 MARESCENS AMINOGLYCOSIDE 3-N-ACETYLTRANSFERASE REMARK 900 RELATED ID: 1B6B RELATED DB: PDB REMARK 900 MELATONIN BIOSYNTHESIS: THE STRUCTURE OF SEROTONIN N- REMARK 900 ACETYLTRANSFERASE AT 2.5 A RESOLUTION SUGGESTS A CATALYTIC MECHANISM REMARK 900 RELATED ID: 1CJW RELATED DB: PDB REMARK 900 SEROTONIN N-ACETYLTRANFERASE COMPLEXED WITH A BISUBSTRATE ANALOG REMARK 900 RELATED ID: 1KUX RELATED DB: PDB REMARK 900 RELATED ID: 1KUY RELATED DB: PDB DBREF 1KUV A 1 207 UNP Q29495 SNAT_SHEEP 1 207 SEQRES 1 A 207 MET SER THR PRO SER VAL HIS CYS LEU LYS PRO SER PRO SEQRES 2 A 207 LEU HIS LEU PRO SER GLY ILE PRO GLY SER PRO GLY ARG SEQRES 3 A 207 GLN ARG ARG HIS THR LEU PRO ALA ASN GLU PHE ARG CYS SEQRES 4 A 207 LEU THR PRO GLU ASP ALA ALA GLY VAL PHE GLU ILE GLU SEQRES 5 A 207 ARG GLU ALA PHE ILE SER VAL SER GLY ASN CYS PRO LEU SEQRES 6 A 207 ASN LEU ASP GLU VAL GLN HIS PHE LEU THR LEU CYS PRO SEQRES 7 A 207 GLU LEU SER LEU GLY TRP PHE VAL GLU GLY ARG LEU VAL SEQRES 8 A 207 ALA PHE ILE ILE GLY SER LEU TRP ASP GLU GLU ARG LEU SEQRES 9 A 207 THR GLN GLU SER LEU ALA LEU HIS ARG PRO ARG GLY HIS SEQRES 10 A 207 SER ALA HIS LEU HIS ALA LEU ALA VAL HIS ARG SER PHE SEQRES 11 A 207 ARG GLN GLN GLY LYS GLY SER VAL LEU LEU TRP ARG TYR SEQRES 12 A 207 LEU HIS HIS VAL GLY ALA GLN PRO ALA VAL ARG ARG ALA SEQRES 13 A 207 VAL LEU MET CYS GLU ASP ALA LEU VAL PRO PHE TYR GLN SEQRES 14 A 207 ARG PHE GLY PHE HIS PRO ALA GLY PRO CYS ALA ILE VAL SEQRES 15 A 207 VAL GLY SER LEU THR PHE THR GLU MET HIS CYS SER LEU SEQRES 16 A 207 ARG GLY HIS ALA ALA LEU ARG ARG ASN SER ASP ARG HET MG A 208 1 HET CA5 A 901 128 HETNAM MG MAGNESIUM ION HETNAM CA5 COA-S-ACETYL 5-BROMOTRYPTAMINE FORMUL 2 MG MG 2+ FORMUL 3 CA5 C33 H47 BR N9 O17 P3 S FORMUL 4 HOH *167(H2 O) HELIX 1 1 THR A 41 GLU A 43 5 3 HELIX 2 2 ASP A 44 PHE A 56 1 13 HELIX 3 3 PHE A 56 GLY A 61 1 6 HELIX 4 4 ASN A 66 CYS A 77 1 12 HELIX 5 5 THR A 105 LEU A 111 5 7 HELIX 6 6 ARG A 128 ARG A 131 5 4 HELIX 7 7 GLY A 134 GLN A 150 1 17 HELIX 8 8 GLU A 161 ALA A 163 5 3 HELIX 9 9 LEU A 164 ARG A 170 1 7 SHEET 1 A 7 GLU A 36 ARG A 38 0 SHEET 2 A 7 SER A 81 VAL A 86 -1 O PHE A 85 N GLU A 36 SHEET 3 A 7 ARG A 89 TRP A 99 -1 O VAL A 91 N TRP A 84 SHEET 4 A 7 SER A 118 VAL A 126 -1 O HIS A 120 N SER A 97 SHEET 5 A 7 ARG A 155 CYS A 160 1 O ARG A 155 N ALA A 119 SHEET 6 A 7 THR A 189 SER A 194 -1 O THR A 189 N CYS A 160 SHEET 7 A 7 HIS A 174 PRO A 178 -1 N HIS A 174 O HIS A 192 SITE 1 AC1 32 PHE A 56 SER A 60 ASN A 62 CYS A 63 SITE 2 AC1 32 PRO A 64 HIS A 122 ALA A 123 LEU A 124 SITE 3 AC1 32 ALA A 125 VAL A 126 ARG A 131 GLN A 132 SITE 4 AC1 32 GLN A 133 GLY A 134 GLY A 136 SER A 137 SITE 5 AC1 32 ARG A 154 MET A 159 CYS A 160 GLU A 161 SITE 6 AC1 32 LEU A 164 PHE A 167 TYR A 168 ARG A 170 SITE 7 AC1 32 VAL A 183 PHE A 188 HOH A 902 HOH A 907 SITE 8 AC1 32 HOH A 942 HOH A 946 HOH A 993 HOH A1065 CRYST1 53.313 68.716 89.725 90.00 90.00 90.00 C 2 2 21 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 0.018757 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014553 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011145 0.00000