PDB Short entry for 1TXR HEADER HYDROLASE 06-JUL-04 1TXR TITLE X-RAY CRYSTAL STRUCTURE OF BESTATIN BOUND TO AAP COMPND MOL_ID: 1; COMPND 2 MOLECULE: BACTERIAL LEUCYL AMINOPEPTIDASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: AAP; COMPND 5 EC: 3.4.11.10 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: VIBRIO PROTEOLYTICUS; SOURCE 3 ORGANISM_TAXID: 671 KEYWDS AMINOPEPTIDASE, BESTATIN, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR C.C.STAMPER,R.C.HOLZ,D.RINGE,G.A.PETSKO REVDAT 5 23-AUG-23 1TXR 1 REMARK LINK ATOM REVDAT 4 24-FEB-09 1TXR 1 VERSN REVDAT 3 10-AUG-04 1TXR 1 JRNL REVDAT 2 27-JUL-04 1TXR 1 SOURCE REVDAT 1 20-JUL-04 1TXR 0 JRNL AUTH C.C.STAMPER,D.L.BIENVENUE,B.BENNETT,D.RINGE,G.A.PETSKO, JRNL AUTH 2 R.C.HOLZ JRNL TITL SPECTROSCOPIC AND X-RAY CRYSTALLOGRAPHIC CHARACTERIZATION OF JRNL TITL 2 BESTATIN BOUND TO THE AMINOPEPTIDASE FROM AEROMONAS (VIBRIO) JRNL TITL 3 PROTEOLYTICA. JRNL REF BIOCHEMISTRY V. 43 9620 2004 JRNL REFN ISSN 0006-2960 JRNL PMID 15274616 JRNL DOI 10.1021/BI049126P REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 21037 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.195 REMARK 3 FREE R VALUE : 0.245 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 2053 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 : 2210 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 24 REMARK 3 SOLVENT ATOMS : 136 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) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL 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) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL 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) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; 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: NULL REMARK 4 REMARK 4 1TXR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-JUL-04. REMARK 100 THE DEPOSITION ID IS D_1000023011. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-APR-97 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 8 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 24377 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1AMP REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 53.90 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.67 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: TRIS, KSCN, NACL, PH 8, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 2 2 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+1/2 REMARK 290 5555 Y,-X+Y,Z+5/6 REMARK 290 6555 X-Y,X,Z+1/6 REMARK 290 7555 Y,X,-Z+1/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+2/3 REMARK 290 10555 -Y,-X,-Z+5/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+1/6 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 34.20000 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 68.40000 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 51.30000 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 85.50000 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 17.10000 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 34.20000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 68.40000 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 85.50000 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 51.30000 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 17.10000 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: 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 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 ASP A 292 REMARK 465 THR A 293 REMARK 465 PRO A 294 REMARK 465 THR A 295 REMARK 465 PRO A 296 REMARK 465 GLY A 297 REMARK 465 ASN A 298 REMARK 465 GLN A 299 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 630 O HOH A 630 10555 0.37 REMARK 500 ND2 ASN A 200 O HOH A 636 6555 2.19 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 GLN A 6 30.68 -93.04 REMARK 500 MET A 180 97.68 80.78 REMARK 500 ASN A 252 112.04 -37.70 REMARK 500 SER A 265 -97.01 -111.91 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 ZN A 502 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 97 NE2 REMARK 620 2 ASP A 117 OD1 86.1 REMARK 620 3 ASP A 179 OD1 89.0 90.0 REMARK 620 4 ASP A 179 OD2 87.2 147.3 57.9 REMARK 620 5 BES A 503 N2 160.3 110.4 80.6 73.1 REMARK 620 6 BES A 503 O2 101.5 101.8 164.6 110.9 85.9 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 501 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 117 OD2 REMARK 620 2 GLU A 152 OE2 88.7 REMARK 620 3 GLU A 152 OE1 146.4 58.8 REMARK 620 4 HIS A 256 NE2 87.9 106.2 92.8 REMARK 620 5 BES A 503 O3 135.4 133.9 78.2 90.8 REMARK 620 6 BES A 503 O2 90.7 91.8 98.2 161.8 77.6 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 502 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BES A 503 DBREF 1TXR A 1 299 UNP Q01693 AMPX_VIBPR 107 405 SEQRES 1 A 299 MET PRO PRO ILE THR GLN GLN ALA THR VAL THR ALA TRP SEQRES 2 A 299 LEU PRO GLN VAL ASP ALA SER GLN ILE THR GLY THR ILE SEQRES 3 A 299 SER SER LEU GLU SER PHE THR ASN ARG PHE TYR THR THR SEQRES 4 A 299 THR SER GLY ALA GLN ALA SER ASP TRP ILE ALA SER GLU SEQRES 5 A 299 TRP GLN ALA LEU SER ALA SER LEU PRO ASN ALA SER VAL SEQRES 6 A 299 LYS GLN VAL SER HIS SER GLY TYR ASN GLN LYS SER VAL SEQRES 7 A 299 VAL MET THR ILE THR GLY SER GLU ALA PRO ASP GLU TRP SEQRES 8 A 299 ILE VAL ILE GLY GLY HIS LEU ASP SER THR ILE GLY SER SEQRES 9 A 299 HIS THR ASN GLU GLN SER VAL ALA PRO GLY ALA ASP ASP SEQRES 10 A 299 ASP ALA SER GLY ILE ALA ALA VAL THR GLU VAL ILE ARG SEQRES 11 A 299 VAL LEU SER GLU ASN ASN PHE GLN PRO LYS ARG SER ILE SEQRES 12 A 299 ALA PHE MET ALA TYR ALA ALA GLU GLU VAL GLY LEU ARG SEQRES 13 A 299 GLY SER GLN ASP LEU ALA ASN GLN TYR LYS SER GLU GLY SEQRES 14 A 299 LYS ASN VAL VAL SER ALA LEU GLN LEU ASP MET THR ASN SEQRES 15 A 299 TYR LYS GLY SER ALA GLN ASP VAL VAL PHE ILE THR ASP SEQRES 16 A 299 TYR THR ASP SER ASN PHE THR GLN TYR LEU THR GLN LEU SEQRES 17 A 299 MET ASP GLU TYR LEU PRO SER LEU THR TYR GLY PHE ASP SEQRES 18 A 299 THR CYS GLY TYR ALA CYS SER ASP HIS ALA SER TRP HIS SEQRES 19 A 299 ASN ALA GLY TYR PRO ALA ALA MET PRO PHE GLU SER LYS SEQRES 20 A 299 PHE ASN ASP TYR ASN PRO ARG ILE HIS THR THR GLN ASP SEQRES 21 A 299 THR LEU ALA ASN SER ASP PRO THR GLY SER HIS ALA LYS SEQRES 22 A 299 LYS PHE THR GLN LEU GLY LEU ALA TYR ALA ILE GLU MET SEQRES 23 A 299 GLY SER ALA THR GLY ASP THR PRO THR PRO GLY ASN GLN HET ZN A 501 1 HET ZN A 502 1 HET BES A 503 22 HETNAM ZN ZINC ION HETNAM BES 2-(3-AMINO-2-HYDROXY-4-PHENYL-BUTYRYLAMINO)-4-METHYL- HETNAM 2 BES PENTANOIC ACID HETSYN BES BESTATIN FORMUL 2 ZN 2(ZN 2+) FORMUL 4 BES C16 H24 N2 O4 FORMUL 5 HOH *136(H2 O) HELIX 1 1 GLN A 6 LEU A 14 1 9 HELIX 2 2 PRO A 15 VAL A 17 5 3 HELIX 3 3 ASP A 18 GLU A 30 1 13 HELIX 4 4 THR A 39 ALA A 58 1 20 HELIX 5 5 ASP A 118 ASN A 135 1 18 HELIX 6 6 LEU A 155 GLU A 168 1 14 HELIX 7 7 ASP A 198 LEU A 213 1 16 HELIX 8 8 ASP A 229 ALA A 236 1 8 HELIX 9 9 LYS A 247 TYR A 251 5 5 HELIX 10 10 GLY A 269 SER A 288 1 20 SHEET 1 A 6 ALA A 63 VAL A 68 0 SHEET 2 A 6 SER A 77 ILE A 82 -1 O VAL A 79 N LYS A 66 SHEET 3 A 6 ARG A 141 TYR A 148 -1 O PHE A 145 N MET A 80 SHEET 4 A 6 ALA A 87 HIS A 97 1 N ILE A 92 O ALA A 144 SHEET 5 A 6 ASN A 171 GLN A 177 1 O ASN A 171 N TRP A 91 SHEET 6 A 6 ALA A 240 ALA A 241 1 O ALA A 241 N GLN A 177 SHEET 1 B 3 TYR A 218 ASP A 221 0 SHEET 2 B 3 VAL A 190 ILE A 193 1 N PHE A 192 O GLY A 219 SHEET 3 B 3 PRO A 243 PHE A 244 -1 O PHE A 244 N VAL A 191 SSBOND 1 CYS A 223 CYS A 227 1555 1555 2.02 LINK NE2 HIS A 97 ZN ZN A 502 1555 1555 2.21 LINK OD2 ASP A 117 ZN ZN A 501 1555 1555 2.02 LINK OD1 ASP A 117 ZN ZN A 502 1555 1555 2.00 LINK OE2 GLU A 152 ZN ZN A 501 1555 1555 2.14 LINK OE1 GLU A 152 ZN ZN A 501 1555 1555 2.31 LINK OD1 ASP A 179 ZN ZN A 502 1555 1555 2.15 LINK OD2 ASP A 179 ZN ZN A 502 1555 1555 2.37 LINK NE2 HIS A 256 ZN ZN A 501 1555 1555 2.09 LINK ZN ZN A 501 O3 BES A 503 1555 1555 2.29 LINK ZN ZN A 501 O2 BES A 503 1555 1555 2.07 LINK ZN ZN A 502 N2 BES A 503 1555 1555 2.32 LINK ZN ZN A 502 O2 BES A 503 1555 1555 1.94 CISPEP 1 ASP A 117 ASP A 118 0 0.17 SITE 1 AC1 5 ASP A 117 GLU A 152 HIS A 256 ZN A 502 SITE 2 AC1 5 BES A 503 SITE 1 AC2 5 HIS A 97 ASP A 117 ASP A 179 ZN A 501 SITE 2 AC2 5 BES A 503 SITE 1 AC3 17 HIS A 97 ASP A 117 GLU A 151 GLU A 152 SITE 2 AC3 17 LEU A 155 ASP A 179 MET A 180 TYR A 225 SITE 3 AC3 17 CYS A 227 PHE A 244 PHE A 248 TYR A 251 SITE 4 AC3 17 HIS A 256 ZN A 501 ZN A 502 HOH A 538 SITE 5 AC3 17 HOH A 581 CRYST1 107.800 107.800 102.600 90.00 90.00 120.00 P 61 2 2 12 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 0.009276 0.005356 0.000000 0.00000 SCALE2 0.000000 0.010712 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009747 0.00000