HEADER OXIDOREDUCTASE 04-MAR-10 2KV1 TITLE INSIGHTS INTO FUNCTION, CATALYTIC MECHANISM AND FOLD EVOLUTION OF TITLE 2 MOUSE SELENOPROTEIN METHIONINE SULFOXIDE REDUCTASE B1 THROUGH TITLE 3 STRUCTURAL ANALYSIS COMPND MOL_ID: 1; COMPND 2 MOLECULE: METHIONINE-R-SULFOXIDE REDUCTASE B1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: MSRB1, SELENOPROTEIN X, SELX, SELENOPROTEIN R, SELR; COMPND 5 EC: 1.8.4.-; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MUS MUSCULUS; SOURCE 3 ORGANISM_COMMON: MOUSE; SOURCE 4 ORGANISM_TAXID: 10090; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: ER 2566; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: VECTOR; SOURCE 9 EXPRESSION_SYSTEM_VECTOR: PSELR KEYWDS MSRB1, SELR, METAL-BINDING, NUCLEUS, OXIDOREDUCTASE, SELENIUM EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR F.L.AACHMANN,L.S.SAL,H.Y.KIM,V.N.GLADYSHEV,A.DIKIY REVDAT 3 09-APR-14 2KV1 1 SEQADV VERSN REVDAT 2 22-DEC-10 2KV1 1 JRNL REVDAT 1 16-MAR-10 2KV1 0 SPRSDE 16-MAR-10 2KV1 2KAO JRNL AUTH F.L.AACHMANN,L.S.SAL,H.Y.KIM,S.M.MARINO,V.N.GLADYSHEV, JRNL AUTH 2 A.DIKIY JRNL TITL INSIGHTS INTO FUNCTION, CATALYTIC MECHANISM, AND FOLD JRNL TITL 2 EVOLUTION OF SELENOPROTEIN METHIONINE SULFOXIDE REDUCTASE B1 JRNL TITL 3 THROUGH STRUCTURAL ANALYSIS JRNL REF J.BIOL.CHEM. V. 285 33315 2010 JRNL REFN ISSN 0021-9258 JRNL PMID 20605785 JRNL DOI 10.1074/JBC.M110.132308 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CYANA 2.1 REMARK 3 AUTHORS : GUNTERT, MUMENTHALER AND WUTHRICH REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2KV1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 08-MAR-10. REMARK 100 THE RCSB ID CODE IS RCSB101607. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 5.5 REMARK 210 IONIC STRENGTH : 0.06 REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 1-1.5MM [U-98% 13C; U-98% 15N] REMARK 210 MSRB1-1, 10MM SODIUM CHLORIDE-2, REMARK 210 20MM SODIUM PHOSPHATE-3, 5MM DTT- REMARK 210 4, 90% H2O/10% D2O; 1-1.5MM [U- REMARK 210 98% 13C; U-98% 15N] MSRB1-5, 10MM REMARK 210 SODIUM CHLORIDE-6, 20MM SODIUM REMARK 210 PHOSPHATE-7, 5MM DTT-8, 100% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 3D 1H-15N NOESY; 3D 1H-13C NOESY REMARK 210 SPECTROMETER FIELD STRENGTH : 800 MHZ; 600 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 3.5, XEASY, CYANA 2.1, REMARK 210 AMBER 10 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 96 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : TARGET FUNCTION REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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 1 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 1 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 1 ARG A 93 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 2 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.4 DEGREES REMARK 500 2 ARG A 93 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 3 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 3 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.0 DEGREES REMARK 500 5 ARG A 93 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 6 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.2 DEGREES REMARK 500 8 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 8 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 9 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 10 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 12 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 13 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 13 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.4 DEGREES REMARK 500 14 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 14 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.8 DEGREES REMARK 500 14 ARG A 93 NE - CZ - NH1 ANGL. DEV. = 3.9 DEGREES REMARK 500 15 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 16 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 17 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 18 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 18 ARG A 93 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 19 ARG A 63 NE - CZ - NH1 ANGL. DEV. = 4.2 DEGREES REMARK 500 20 ARG A 89 NE - CZ - NH1 ANGL. DEV. = 4.3 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 1 SER A 2 -85.39 -154.18 REMARK 500 1 PHE A 3 134.48 61.55 REMARK 500 1 SER A 27 3.04 59.40 REMARK 500 1 PRO A 42 171.34 -56.14 REMARK 500 1 PRO A 64 26.05 -76.57 REMARK 500 1 ASN A 76 -155.42 -89.60 REMARK 500 1 ASN A 84 -4.79 66.44 REMARK 500 1 SER A 92 86.77 54.52 REMARK 500 1 GLU A 109 -100.05 -143.68 REMARK 500 1 ALA A 110 -134.23 47.42 REMARK 500 1 ALA A 111 -166.14 58.66 REMARK 500 2 SER A 2 -70.06 -156.52 REMARK 500 2 PHE A 3 150.00 63.45 REMARK 500 2 SER A 27 8.17 59.39 REMARK 500 2 SER A 33 1.70 -69.88 REMARK 500 2 PRO A 64 34.99 -77.22 REMARK 500 2 ASN A 76 -150.42 -81.07 REMARK 500 2 ALA A 111 -21.85 61.93 REMARK 500 2 SER A 113 34.80 -142.79 REMARK 500 2 LEU A 117 50.34 -144.57 REMARK 500 2 GLU A 118 -134.27 -104.61 REMARK 500 2 HIS A 119 103.45 -164.77 REMARK 500 2 HIS A 123 171.41 66.35 REMARK 500 3 LYS A 25 -34.93 -130.28 REMARK 500 3 SER A 27 18.84 50.76 REMARK 500 3 SER A 40 35.81 -72.85 REMARK 500 3 PRO A 64 33.91 -79.37 REMARK 500 3 ASN A 76 -151.71 -85.21 REMARK 500 3 ASN A 84 -2.75 70.72 REMARK 500 3 LYS A 106 -173.60 -65.87 REMARK 500 3 LYS A 108 -63.66 -92.31 REMARK 500 3 ALA A 110 -167.92 53.80 REMARK 500 3 ALA A 111 -2.94 57.39 REMARK 500 3 ALA A 112 144.49 61.45 REMARK 500 3 HIS A 120 -161.53 -126.62 REMARK 500 4 CYS A 4 86.11 60.60 REMARK 500 4 SER A 5 87.25 -68.26 REMARK 500 4 PHE A 6 -17.61 62.84 REMARK 500 4 LYS A 25 -37.70 -130.00 REMARK 500 4 SER A 27 14.28 51.23 REMARK 500 4 PRO A 64 40.90 -72.08 REMARK 500 4 ALA A 110 -138.52 47.42 REMARK 500 4 ALA A 111 -163.50 53.86 REMARK 500 4 SER A 113 42.10 -79.34 REMARK 500 4 HIS A 122 -63.55 -129.28 REMARK 500 4 HIS A 123 -48.62 63.55 REMARK 500 5 SER A 2 168.49 65.10 REMARK 500 5 PHE A 12 8.75 -69.11 REMARK 500 5 ASN A 14 -43.63 -150.88 REMARK 500 5 SER A 27 6.76 56.57 REMARK 500 REMARK 500 THIS ENTRY HAS 267 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 GLY A 86 PRO A 87 1 -145.10 REMARK 500 GLN A 91 SER A 92 2 133.47 REMARK 500 MET A 1 SER A 2 3 -147.30 REMARK 500 LEU A 101 LYS A 102 6 148.05 REMARK 500 LYS A 88 ARG A 89 8 141.44 REMARK 500 PHE A 16 GLU A 17 10 149.01 REMARK 500 HIS A 34 SER A 35 10 -149.81 REMARK 500 MET A 1 SER A 2 11 -144.48 REMARK 500 LYS A 88 ARG A 89 11 138.46 REMARK 500 VAL A 55 THR A 56 12 -147.79 REMARK 500 ARG A 89 GLY A 90 15 -148.99 REMARK 500 GLY A 90 GLN A 91 15 -142.86 REMARK 500 PRO A 59 GLU A 60 16 149.00 REMARK 500 ARG A 89 GLY A 90 16 -149.10 REMARK 500 VAL A 11 PHE A 12 17 -144.85 REMARK 500 ALA A 111 ALA A 112 17 -147.86 REMARK 500 ARG A 89 GLY A 90 18 -141.47 REMARK 500 LEU A 30 PHE A 31 20 148.51 REMARK 500 ASN A 76 GLY A 77 20 147.38 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 1 TYR A 37 0.12 SIDE CHAIN REMARK 500 4 TYR A 21 0.10 SIDE CHAIN REMARK 500 7 TYR A 28 0.07 SIDE CHAIN REMARK 500 11 ARG A 93 0.10 SIDE CHAIN REMARK 500 14 TYR A 21 0.08 SIDE CHAIN REMARK 500 15 TYR A 37 0.07 SIDE CHAIN REMARK 500 17 ARG A 63 0.09 SIDE CHAIN REMARK 500 19 ARG A 63 0.09 SIDE CHAIN REMARK 500 20 ARG A 63 0.11 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE REMARK 500 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,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 20 SER A 27 24.7 L L OUTSIDE RANGE 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 1 ZN A 125 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 71 SG REMARK 620 2 CYS A 23 SG 124.8 REMARK 620 3 CYS A 74 SG 75.6 114.7 REMARK 620 4 CYS A 26 SG 144.5 90.7 91.8 REMARK 620 N 1 2 3 REMARK 700 REMARK 700 SHEET REMARK 700 DETERMINATION METHOD: AUTHOR DETERMINED 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 125 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 15193 RELATED DB: BMRB DBREF 2KV1 A 1 116 UNP Q9JLC3 MSRB1_MOUSE 1 116 SEQADV 2KV1 CYS A 95 UNP Q9JLC3 SEC 95 ENGINEERED MUTATION SEQADV 2KV1 LEU A 117 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 GLU A 118 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 119 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 120 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 121 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 122 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 123 UNP Q9JLC3 EXPRESSION TAG SEQADV 2KV1 HIS A 124 UNP Q9JLC3 EXPRESSION TAG SEQRES 1 A 124 MET SER PHE CYS SER PHE PHE GLY GLY GLU VAL PHE GLN SEQRES 2 A 124 ASN HIS PHE GLU PRO GLY VAL TYR VAL CYS ALA LYS CYS SEQRES 3 A 124 SER TYR GLU LEU PHE SER SER HIS SER LYS TYR ALA HIS SEQRES 4 A 124 SER SER PRO TRP PRO ALA PHE THR GLU THR ILE HIS PRO SEQRES 5 A 124 ASP SER VAL THR LYS CYS PRO GLU LYS ASN ARG PRO GLU SEQRES 6 A 124 ALA LEU LYS VAL SER CYS GLY LYS CYS GLY ASN GLY LEU SEQRES 7 A 124 GLY HIS GLU PHE LEU ASN ASP GLY PRO LYS ARG GLY GLN SEQRES 8 A 124 SER ARG PHE CYS ILE PHE SER SER SER LEU LYS PHE VAL SEQRES 9 A 124 PRO LYS GLY LYS GLU ALA ALA ALA SER GLN GLY HIS LEU SEQRES 10 A 124 GLU HIS HIS HIS HIS HIS HIS HET ZN A 125 1 HETNAM ZN ZINC ION FORMUL 2 ZN ZN 2+ SHEET 1 A 2 GLY A 19 CYS A 23 0 SHEET 2 A 2 SER A 100 VAL A 104 -1 O VAL A 104 N VAL A 20 SHEET 3 A 2 TYR A 28 LEU A 30 -1 SHEET 1 B 4 VAL A 55 GLU A 60 0 SHEET 2 B 4 ALA A 66 GLY A 72 -1 O SER A 70 N THR A 56 SHEET 3 B 4 GLY A 77 GLU A 81 -1 O GLU A 81 N LEU A 67 SHEET 4 B 4 ARG A 93 ILE A 96 -1 O CYS A 95 N HIS A 80 SSBOND 1 CYS A 71 CYS A 74 1555 1555 2.89 LINK SG CYS A 71 ZN ZN A 125 1555 1555 2.31 LINK SG CYS A 23 ZN ZN A 125 1555 1555 2.34 LINK SG CYS A 74 ZN ZN A 125 1555 1555 2.40 LINK SG CYS A 26 ZN ZN A 125 1555 1555 2.41 SITE 1 AC1 4 CYS A 23 CYS A 26 CYS A 71 CYS A 74 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 MODEL 1