HEADER HYDROLASE 24-MAY-95 1PSJ TITLE ACIDIC PHOSPHOLIPASE A2 FROM AGKISTRODON HALYS PALLAS COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHOLIPASE A2; COMPND 3 CHAIN: A; COMPND 4 EC: 3.1.1.4 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GLOYDIUS HALYS; SOURCE 3 ORGANISM_COMMON: HALYS VIPER; SOURCE 4 ORGANISM_TAXID: 8714; SOURCE 5 SECRETION: VENOM KEYWDS HYDROLASE, LIPID DEGRADATION, CALCIUM EXPDTA X-RAY DIFFRACTION AUTHOR X.Q.WANG,Z.J.LIN REVDAT 3 24-FEB-09 1PSJ 1 VERSN REVDAT 2 01-APR-03 1PSJ 1 JRNL REVDAT 1 11-JUL-96 1PSJ 0 JRNL AUTH X.Q.WANG,J.YANG,L.L.GUI,Z.J.LIN,Y.C.CHEN,Y.C.ZHOU JRNL TITL CRYSTAL STRUCTURE OF AN ACIDIC PHOSPHOLIPASE A2 JRNL TITL 2 FROM THE VENOM OF AGKISTRODON HALYS PALLAS AT 2.0 JRNL TITL 3 A RESOLUTION. JRNL REF J.MOL.BIOL. V. 255 669 1996 JRNL REFN ISSN 0022-2836 JRNL PMID 8636969 JRNL DOI 10.1006/JMBI.1996.0054 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH L.GUI,X.NIU,R.BI,Z.LIN,Y.CHEN REMARK 1 TITL PRELIMINARY CRYSTALLOGRAPHIC STUDY OF THE PLATELET REMARK 1 TITL 2 AGGREGATION INHIBITOR FROM THE VENOM OF REMARK 1 TITL 3 AGKISTRODON HALYS PALLAS REMARK 1 REF CHIN.SCI.BULL. V. 37 1394 1992 REMARK 1 REFN ISSN 1001-6538 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.0 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) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.010 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 87.6 REMARK 3 NUMBER OF REFLECTIONS : 7481 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) : 0.157 REMARK 3 FREE R VALUE : 0.228 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL 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 : 970 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 133 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.60 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) : 0.013 REMARK 3 BOND ANGLES (DEGREES) : 2.64 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.85 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.21 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 : PARAM19X.PRO REMARK 3 PARAMETER FILE 2 : NULL REMARK 3 PARAMETER FILE 3 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPH19X.PRO REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE SIDE CHAINS OF RESIDUES LYS REMARK 3 124, GLN 128 AND GLU 129 AT C-TERMINAL LOOP HAVE LESS WELL REMARK 3 DEFINED ELECTRON DENSITY. IT MAY BE A REFLECTION OF THE REMARK 3 INTRINSIC FLEXIBILITY OF THIS PART OF THE MOLECULE. REMARK 4 REMARK 4 1PSJ COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : MAR-92 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL 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 : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XENGEN REMARK 200 DATA SCALING SOFTWARE : XENGEN REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 7841 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.010 REMARK 200 RESOLUTION RANGE LOW (A) : 29.810 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 86.8 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04200 REMARK 200 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MR REMARK 200 SOFTWARE USED: X-PLOR 3.0 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.38 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 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 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 10.90667 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 21.81333 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 16.36000 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 27.26667 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 5.45333 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 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 TRP A 21 CD1 - CG - CD2 ANGL. DEV. = 5.9 DEGREES REMARK 500 TRP A 21 CE2 - CD2 - CG ANGL. DEV. = -5.7 DEGREES REMARK 500 TRP A 31 CD1 - CG - CD2 ANGL. DEV. = 6.2 DEGREES REMARK 500 TRP A 31 CE2 - CD2 - CG ANGL. DEV. = -5.6 DEGREES REMARK 500 TYR A 52 CB - CG - CD2 ANGL. DEV. = -5.1 DEGREES REMARK 500 ARG A 100 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG A 100 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 TRP A 119 CD1 - CG - CD2 ANGL. DEV. = 6.5 DEGREES REMARK 500 TRP A 119 CE2 - CD2 - CG ANGL. DEV. = -5.8 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 ASN A 24 64.64 -153.31 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 254 DISTANCE = 5.15 ANGSTROMS 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 CA A 200 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 TYR A 28 O REMARK 620 2 GLY A 30 O 87.9 REMARK 620 3 GLY A 32 O 110.3 95.6 REMARK 620 4 HOH A 213 O 147.9 76.9 99.3 REMARK 620 5 ASP A 49 OD1 116.4 120.8 120.0 53.5 REMARK 620 6 ASP A 49 OD2 103.6 166.5 87.0 89.6 47.7 REMARK 620 7 HOH A 212 O 78.7 65.3 159.2 69.3 68.1 109.6 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAL REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: THE CALCIUM ION IS COORDINATED TO THE TWO REMARK 800 CARBOXYLATE OXYGENS OF ASP 49 AND EACH CARBONYL OXYGENS OF TYR REMARK 800 28, GLY 30 AND GLY 32 AS WELL AS TWO WATER MOLECULES (HOH 212 REMARK 800 AND HOH 213). THESE LIGAND ATOMS FORM A DISTORTED PENTAGONAL REMARK 800 BIPYRAMID STRUCTURE. THE AVERAGE DISTANCE OF CALCIUM ION TO REMARK 800 LIGANDS OF PROTEIN OXYGEN IS 2.4 ANGSTROMS. REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 200 REMARK 999 REMARK 999 SEQUENCE REMARK 999 REMARK 999 THE AMINO ACID NUMBERING IS BASED ON THE COMMON SCHEME REMARK 999 PROPOSED FOR ALL PHOSPHOLIPASES. IT IS NOT CONSECUTIVE. DBREF 1PSJ A 1 134 UNP P14418 PA21B_AGKHP 1 124 SEQRES 1 A 124 SER LEU ILE GLN PHE GLU THR LEU ILE MET LYS VAL ALA SEQRES 2 A 124 LYS LYS SER GLY MET PHE TRP TYR SER ASN TYR GLY CYS SEQRES 3 A 124 TYR CYS GLY TRP GLY GLY GLN GLY ARG PRO GLN ASP ALA SEQRES 4 A 124 THR ASP ARG CYS CYS PHE VAL HIS ASP CYS CYS TYR GLY SEQRES 5 A 124 LYS VAL THR GLY CYS ASP PRO LYS MET ASP VAL TYR SER SEQRES 6 A 124 PHE SER GLU GLU ASN GLY ASP ILE VAL CYS GLY GLY ASP SEQRES 7 A 124 ASP PRO CYS LYS LYS GLU ILE CYS GLU CYS ASP ARG ALA SEQRES 8 A 124 ALA ALA ILE CYS PHE ARG ASP ASN LEU THR LEU TYR ASN SEQRES 9 A 124 ASP LYS LYS TYR TRP ALA PHE GLY ALA LYS ASN CYS PRO SEQRES 10 A 124 GLN GLU GLU SER GLU PRO CYS HET CA A 200 1 HETNAM CA CALCIUM ION FORMUL 2 CA CA 2+ FORMUL 3 HOH *133(H2 O) HELIX 1 1 LEU A 2 ALA A 13 1 12 HELIX 2 2 GLY A 18 TRP A 21 1 4 HELIX 3 3 ALA A 40 LYS A 54 1 15 HELIX 4 4 PRO A 90 LEU A 112 1 23 HELIX 5 5 ASP A 115 TYR A 118 1 4 HELIX 6 6 ALA A 123 ASN A 125 5 3 HELIX 7 7 GLN A 128 GLU A 130 5 3 SHEET 1 A 2 SER A 74 GLU A 78 0 SHEET 2 A 2 ASP A 81 GLY A 85 -1 N GLY A 85 O SER A 74 SSBOND 1 CYS A 27 CYS A 126 1555 1555 2.03 SSBOND 2 CYS A 29 CYS A 45 1555 1555 1.99 SSBOND 3 CYS A 44 CYS A 105 1555 1555 2.00 SSBOND 4 CYS A 50 CYS A 134 1555 1555 2.02 SSBOND 5 CYS A 51 CYS A 98 1555 1555 2.02 SSBOND 6 CYS A 61 CYS A 91 1555 1555 2.01 SSBOND 7 CYS A 84 CYS A 96 1555 1555 2.00 LINK CA CA A 200 O TYR A 28 1555 1555 2.27 LINK CA CA A 200 O GLY A 30 1555 1555 2.24 LINK CA CA A 200 O GLY A 32 1555 1555 2.28 LINK CA CA A 200 O HOH A 213 1555 1555 3.20 LINK CA CA A 200 OD1 ASP A 49 1555 1555 2.80 LINK CA CA A 200 OD2 ASP A 49 1555 1555 2.50 LINK CA CA A 200 O HOH A 212 1555 1555 2.78 SITE 1 CAL 4 TYR A 28 GLY A 30 GLY A 32 ASP A 49 SITE 1 AC1 5 TYR A 28 GLY A 30 GLY A 32 ASP A 49 SITE 2 AC1 5 HOH A 212 CRYST1 83.570 83.570 32.720 90.00 90.00 120.00 P 61 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 0.011966 0.006909 0.000000 0.00000 SCALE2 0.000000 0.013817 0.000000 0.00000 SCALE3 0.000000 0.000000 0.030562 0.00000