HEADER IMMUNE SYSTEM 28-AUG-25 9SIA TITLE CRYSTAL STRUCTURE OF HUMAN SIGNAL REGULATORY PROTEIN 2 (SIRP) ALPHA V2 TITLE 2 IN COMPLEX WITH L-TRYPTOPHANE COMPND MOL_ID: 1; COMPND 2 MOLECULE: HUMAN SIRP ALPHA V2; COMPND 3 CHAIN: A, B, C; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_TAXID: 9606; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS IMMUNOGLOBULIN SUPERFAMILY, SIRP, SIRPA, DON'T EAT ME SIGNAL, IMMUNE KEYWDS 2 CHECKPOINT, TRYPTOPHANE, COMPLEX, IMMUNE SYSTEM EXPDTA X-RAY DIFFRACTION AUTHOR S.BARELIER,S.BETZI,E.D.GARCIN,T.W.MILLER REVDAT 1 28-JAN-26 9SIA 0 JRNL AUTH M.STORDER,S.BARELIER,F.CORDIER,T.YACOUB,L.ILARI,K.BARRAL, JRNL AUTH 2 S.MAHMOODI,M.SAEZ-AYALA,S.COMBES,S.BETZI,C.DERVIAUX, JRNL AUTH 3 A.ULLIANA,F.TORRES,J.RUBIN,P.ROCHE,X.MORELLI,E.D.GARCIN, JRNL AUTH 4 T.W.MILLER JRNL TITL ENGINEERING SIRP ALPHA CONFORMATIONAL PLASTICITY TO REVEAL A JRNL TITL 2 CRYPTIC POCKET SUITABLE FOR STRUCTURE-BASED DRUG DESIGN. JRNL REF BIORXIV 2025 JRNL REFN ISSN 2692-8205 JRNL PMID 41497624 JRNL DOI 10.64898/2025.12.10.693509 REMARK 2 REMARK 2 RESOLUTION. 1.83 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.20.1_4487: ???) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.83 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 43.32 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.7 REMARK 3 NUMBER OF REFLECTIONS : 29893 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.219 REMARK 3 R VALUE (WORKING SET) : 0.217 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.860 REMARK 3 FREE R VALUE TEST SET COUNT : 1453 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 43.3200 - 3.9400 0.97 3040 168 0.1706 0.2011 REMARK 3 2 3.9400 - 3.1300 0.98 2895 136 0.1968 0.2143 REMARK 3 3 3.1300 - 2.7300 0.98 2845 131 0.2342 0.2908 REMARK 3 4 2.7300 - 2.4800 0.98 2820 145 0.2406 0.2968 REMARK 3 5 2.4800 - 2.3100 0.99 2798 157 0.2336 0.2646 REMARK 3 6 2.3100 - 2.1700 0.99 2835 130 0.2332 0.2767 REMARK 3 7 2.1700 - 2.0600 0.99 2786 143 0.2326 0.3057 REMARK 3 8 2.0600 - 1.9700 1.00 2803 156 0.2514 0.3007 REMARK 3 9 1.9700 - 1.9000 1.00 2825 139 0.2827 0.3547 REMARK 3 10 1.9000 - 1.8300 1.00 2793 148 0.3042 0.3507 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.260 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 25.790 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.009 2698 REMARK 3 ANGLE : 1.015 3666 REMARK 3 CHIRALITY : 0.067 412 REMARK 3 PLANARITY : 0.009 478 REMARK 3 DIHEDRAL : 6.326 373 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 9SIA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 28-AUG-25. REMARK 100 THE DEPOSITION ID IS D_1292147145. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-MAR-25 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : MASSIF-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9655 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 29981 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.830 REMARK 200 RESOLUTION RANGE LOW (A) : 43.320 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.0 REMARK 200 DATA REDUNDANCY : 7.300 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 14.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.83 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.89 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 FOR SHELL : 1.800 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.53 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.10 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.01M ZINC SULFATE HEPTAHYDRATE 0.1M REMARK 280 MES MONOHYDRATE PH 6.5 25% V/V PEG MONOMETHYL ETHER 550, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 21 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+1/2,X+1/2,Z+1/4 REMARK 290 4555 Y+1/2,-X+1/2,Z+3/4 REMARK 290 5555 -X+1/2,Y+1/2,-Z+1/4 REMARK 290 6555 X+1/2,-Y+1/2,-Z+3/4 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z+1/2 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 99.14450 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 28.67750 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 28.67750 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 49.57225 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 28.67750 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 28.67750 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 148.71675 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 28.67750 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 28.67750 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 49.57225 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 28.67750 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 28.67750 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 148.71675 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 0.00000 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 99.14450 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2, 3 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B 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 REMARK 350 BIOMOLECULE: 3 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: C 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 GLU A 65 REMARK 465 SER A 66 REMARK 465 THR A 67 REMARK 465 SER A 118 REMARK 465 SER B 0 REMARK 465 GLU B 65 REMARK 465 SER B 66 REMARK 465 THR B 67 REMARK 465 VAL C 63 REMARK 465 SER C 64 REMARK 465 GLU C 65 REMARK 465 SER C 66 REMARK 465 THR C 67 REMARK 465 LYS C 68 REMARK 465 ARG C 69 REMARK 465 GLU C 70 REMARK 465 SER C 118 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 LYS A 116 101.87 -58.02 REMARK 500 LYS C 53 -74.00 -68.01 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 B 202 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SER A 0 N REMARK 620 2 SER A 0 O 78.6 REMARK 620 3 HIS B 56 NE2 109.8 31.6 REMARK 620 4 GLU C 1 OE1 114.7 44.0 29.1 REMARK 620 5 GLU C 1 OE2 118.2 46.7 29.3 3.5 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN C 202 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 1 OE1 REMARK 620 2 GLU A 1 OE2 54.5 REMARK 620 3 HIS A 56 NE2 90.7 144.0 REMARK 620 4 HOH A 241 O 92.3 146.5 5.4 REMARK 620 5 SER C 0 N 92.3 146.4 4.7 0.7 REMARK 620 6 SER C 0 O 94.4 147.4 3.7 5.9 5.2 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN C 203 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 10 OD2 REMARK 620 2 HIS A 24 ND1 114.2 REMARK 620 3 HIS C 24 NE2 80.2 34.2 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 201 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP B 10 OD2 REMARK 620 2 HIS B 24 NE2 81.7 REMARK 620 N 1 DBREF 9SIA A 0 118 PDB 9SIA 9SIA 0 118 DBREF 9SIA B 0 118 PDB 9SIA 9SIA 0 118 DBREF 9SIA C 0 118 PDB 9SIA 9SIA 0 118 SEQRES 1 A 119 SER GLU GLU GLU LEU GLN VAL ILE GLN PRO ASP LYS SER SEQRES 2 A 119 VAL SER VAL ALA ALA GLY GLU SER ALA ILE LEU HIS CYS SEQRES 3 A 119 THR VAL THR SER LEU ILE PRO VAL GLY PRO ILE GLN TRP SEQRES 4 A 119 PHE ARG GLY ALA GLY PRO ALA ARG GLU LEU ILE TYR ASN SEQRES 5 A 119 GLN LYS GLU GLY HIS PHE PRO ARG VAL THR THR VAL SER SEQRES 6 A 119 GLU SER THR LYS ARG GLU ASN MET ASP PHE SER ILE SER SEQRES 7 A 119 ILE SER ASN ILE THR PRO ALA ASP ALA GLY THR TYR TYR SEQRES 8 A 119 CYS VAL LYS PHE ARG LYS GLY SER PRO ASP THR GLU PHE SEQRES 9 A 119 LYS SER GLY ALA GLY THR GLU LEU SER VAL ARG ALA LYS SEQRES 10 A 119 PRO SER SEQRES 1 B 119 SER GLU GLU GLU LEU GLN VAL ILE GLN PRO ASP LYS SER SEQRES 2 B 119 VAL SER VAL ALA ALA GLY GLU SER ALA ILE LEU HIS CYS SEQRES 3 B 119 THR VAL THR SER LEU ILE PRO VAL GLY PRO ILE GLN TRP SEQRES 4 B 119 PHE ARG GLY ALA GLY PRO ALA ARG GLU LEU ILE TYR ASN SEQRES 5 B 119 GLN LYS GLU GLY HIS PHE PRO ARG VAL THR THR VAL SER SEQRES 6 B 119 GLU SER THR LYS ARG GLU ASN MET ASP PHE SER ILE SER SEQRES 7 B 119 ILE SER ASN ILE THR PRO ALA ASP ALA GLY THR TYR TYR SEQRES 8 B 119 CYS VAL LYS PHE ARG LYS GLY SER PRO ASP THR GLU PHE SEQRES 9 B 119 LYS SER GLY ALA GLY THR GLU LEU SER VAL ARG ALA LYS SEQRES 10 B 119 PRO SER SEQRES 1 C 119 SER GLU GLU GLU LEU GLN VAL ILE GLN PRO ASP LYS SER SEQRES 2 C 119 VAL SER VAL ALA ALA GLY GLU SER ALA ILE LEU HIS CYS SEQRES 3 C 119 THR VAL THR SER LEU ILE PRO VAL GLY PRO ILE GLN TRP SEQRES 4 C 119 PHE ARG GLY ALA GLY PRO ALA ARG GLU LEU ILE TYR ASN SEQRES 5 C 119 GLN LYS GLU GLY HIS PHE PRO ARG VAL THR THR VAL SER SEQRES 6 C 119 GLU SER THR LYS ARG GLU ASN MET ASP PHE SER ILE SER SEQRES 7 C 119 ILE SER ASN ILE THR PRO ALA ASP ALA GLY THR TYR TYR SEQRES 8 C 119 CYS VAL LYS PHE ARG LYS GLY SER PRO ASP THR GLU PHE SEQRES 9 C 119 LYS SER GLY ALA GLY THR GLU LEU SER VAL ARG ALA LYS SEQRES 10 C 119 PRO SER HET ZN B 201 1 HET ZN B 202 1 HET TRP C 201 15 HET ZN C 202 1 HET ZN C 203 1 HETNAM ZN ZINC ION HETNAM TRP TRYPTOPHAN FORMUL 4 ZN 4(ZN 2+) FORMUL 6 TRP C11 H12 N2 O2 FORMUL 9 HOH *142(H2 O) HELIX 1 AA1 THR A 82 ALA A 86 5 5 HELIX 2 AA2 THR B 82 ALA B 86 5 5 HELIX 3 AA3 THR C 82 ALA C 86 5 5 SHEET 1 AA1 2 VAL A 6 ILE A 7 0 SHEET 2 AA1 2 THR A 26 VAL A 27 -1 O THR A 26 N ILE A 7 SHEET 1 AA2 5 SER A 12 ALA A 16 0 SHEET 2 AA2 5 THR A 109 ARG A 114 1 O ARG A 114 N VAL A 15 SHEET 3 AA2 5 GLY A 87 ARG A 95 -1 N TYR A 89 O THR A 109 SHEET 4 AA2 5 ILE A 36 ARG A 40 -1 N GLN A 37 O VAL A 92 SHEET 5 AA2 5 GLU A 47 ASN A 51 -1 O TYR A 50 N TRP A 38 SHEET 1 AA3 4 SER A 12 ALA A 16 0 SHEET 2 AA3 4 THR A 109 ARG A 114 1 O ARG A 114 N VAL A 15 SHEET 3 AA3 4 GLY A 87 ARG A 95 -1 N TYR A 89 O THR A 109 SHEET 4 AA3 4 THR A 101 SER A 105 -1 O PHE A 103 N LYS A 93 SHEET 1 AA4 3 ALA A 21 LEU A 23 0 SHEET 2 AA4 3 ILE A 76 ILE A 78 -1 O ILE A 76 N LEU A 23 SHEET 3 AA4 3 VAL A 60 THR A 62 -1 N THR A 61 O SER A 77 SHEET 1 AA5 2 VAL B 6 ILE B 7 0 SHEET 2 AA5 2 THR B 26 VAL B 27 -1 O THR B 26 N ILE B 7 SHEET 1 AA6 5 SER B 12 ALA B 16 0 SHEET 2 AA6 5 THR B 109 ARG B 114 1 O GLU B 110 N VAL B 13 SHEET 3 AA6 5 GLY B 87 ARG B 95 -1 N TYR B 89 O THR B 109 SHEET 4 AA6 5 ILE B 36 ARG B 40 -1 N GLN B 37 O VAL B 92 SHEET 5 AA6 5 GLU B 47 ASN B 51 -1 O ILE B 49 N TRP B 38 SHEET 1 AA7 4 SER B 12 ALA B 16 0 SHEET 2 AA7 4 THR B 109 ARG B 114 1 O GLU B 110 N VAL B 13 SHEET 3 AA7 4 GLY B 87 ARG B 95 -1 N TYR B 89 O THR B 109 SHEET 4 AA7 4 THR B 101 SER B 105 -1 O PHE B 103 N LYS B 93 SHEET 1 AA8 3 ALA B 21 LEU B 23 0 SHEET 2 AA8 3 ILE B 76 ILE B 78 -1 O ILE B 76 N LEU B 23 SHEET 3 AA8 3 VAL B 60 THR B 62 -1 N THR B 61 O SER B 77 SHEET 1 AA9 2 VAL C 6 ILE C 7 0 SHEET 2 AA9 2 THR C 26 VAL C 27 -1 O THR C 26 N ILE C 7 SHEET 1 AB1 5 SER C 12 ALA C 16 0 SHEET 2 AB1 5 THR C 109 ARG C 114 1 O SER C 112 N VAL C 13 SHEET 3 AB1 5 GLY C 87 ARG C 95 -1 N GLY C 87 O LEU C 111 SHEET 4 AB1 5 ILE C 36 ARG C 40 -1 N GLN C 37 O VAL C 92 SHEET 5 AB1 5 GLU C 47 TYR C 50 -1 O ILE C 49 N TRP C 38 SHEET 1 AB2 4 SER C 12 ALA C 16 0 SHEET 2 AB2 4 THR C 109 ARG C 114 1 O SER C 112 N VAL C 13 SHEET 3 AB2 4 GLY C 87 ARG C 95 -1 N GLY C 87 O LEU C 111 SHEET 4 AB2 4 THR C 101 SER C 105 -1 O THR C 101 N ARG C 95 SHEET 1 AB3 3 ALA C 21 LEU C 23 0 SHEET 2 AB3 3 ILE C 76 ILE C 78 -1 O ILE C 76 N LEU C 23 SHEET 3 AB3 3 VAL C 60 THR C 61 -1 N THR C 61 O SER C 77 SSBOND 1 CYS A 25 CYS A 91 1555 1555 2.03 SSBOND 2 CYS B 25 CYS B 91 1555 1555 2.05 SSBOND 3 CYS C 25 CYS C 91 1555 1555 2.06 LINK N SER A 0 ZN ZN B 202 1555 1545 2.03 LINK O SER A 0 ZN ZN B 202 1555 1545 2.35 LINK OE1 GLU A 1 ZN ZN C 202 1555 5545 2.05 LINK OE2 GLU A 1 ZN ZN C 202 1555 5545 2.64 LINK OD2 ASP A 10 ZN ZN C 203 1555 5545 1.82 LINK ND1 HIS A 24 ZN ZN C 203 1555 5545 2.21 LINK NE2 HIS A 56 ZN ZN C 202 1555 1555 2.22 LINK O HOH A 241 ZN ZN C 202 5555 1555 2.33 LINK OD2 ASP B 10 ZN ZN B 201 1555 7555 2.02 LINK NE2 HIS B 24 ZN ZN B 201 1555 1555 2.23 LINK NE2 HIS B 56 ZN ZN B 202 1555 1555 2.22 LINK ZN ZN B 202 OE1 GLU C 1 5545 1555 2.11 LINK ZN ZN B 202 OE2 GLU C 1 5545 1555 2.34 LINK N SER C 0 ZN ZN C 202 1555 1555 1.92 LINK O SER C 0 ZN ZN C 202 1555 1555 2.36 LINK NE2 HIS C 24 ZN ZN C 203 1555 1555 2.21 CISPEP 1 ILE A 31 PRO A 32 0 -0.04 CISPEP 2 SER A 98 PRO A 99 0 6.90 CISPEP 3 ILE B 31 PRO B 32 0 -3.11 CISPEP 4 SER B 98 PRO B 99 0 1.62 CISPEP 5 ILE C 31 PRO C 32 0 -1.70 CISPEP 6 SER C 98 PRO C 99 0 6.86 CISPEP 7 SER C 98 PRO C 99 0 5.16 CRYST1 57.355 57.355 198.289 90.00 90.00 90.00 P 41 21 2 24 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 0.017435 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017435 0.000000 0.00000 SCALE3 0.000000 0.000000 0.005043 0.00000 CONECT 190 691 CONECT 437 2643 CONECT 691 190 CONECT 1066 2626 CONECT 1072 1569 CONECT 1319 2627 CONECT 1569 1072 CONECT 1773 2643 CONECT 1776 2643 CONECT 1965 2644 CONECT 1971 2422 CONECT 2422 1971 CONECT 2626 1066 CONECT 2627 1319 CONECT 2643 437 1773 1776 CONECT 2644 1965 MASTER 310 0 5 3 42 0 0 6 2756 3 16 30 END