HEADER METHYLTRANSFERASE 02-SEP-94 1BMT TITLE HOW A PROTEIN BINDS B12: A 3.O ANGSTROM X-RAY STRUCTURE OF THE B12- TITLE 2 BINDING DOMAINS OF METHIONINE SYNTHASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: METHIONINE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 EC: 2.1.1.13; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS METHYLTRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR C.L.DRENNAN,S.HUANG,J.T.DRUMMOND,R.G.MATTHEWS,M.L.LUDWIG REVDAT 5 07-FEB-24 1BMT 1 REMARK REVDAT 4 27-APR-22 1BMT 1 SOURCE JRNL REMARK REVDAT 3 24-FEB-09 1BMT 1 VERSN REVDAT 2 01-APR-03 1BMT 1 JRNL REVDAT 1 03-JUN-95 1BMT 0 JRNL AUTH C.L.DRENNAN,S.HUANG,J.T.DRUMMOND,R.G.MATTHEWS,M.L.LUDWIG JRNL TITL HOW A PROTEIN BINDS B12: A 3.0 A X-RAY STRUCTURE OF JRNL TITL 2 B12-BINDING DOMAINS OF METHIONINE SYNTHASE. JRNL REF SCIENCE V. 266 1669 1994 JRNL REFN ISSN 0036-8075 JRNL PMID 7992050 JRNL DOI 10.1126/SCIENCE.7992050 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.L.DRENNAN,R.G.MATTHEWS,M.L.LUDWIG REMARK 1 TITL COBALAMIN-DEPENDENT METHIONINE SYNTHASE: THE STRUCTURE OF A REMARK 1 TITL 2 METHYLCOBALAMIN-BINDING FRAGMENT AND IMPLICATIONS FOR OTHER REMARK 1 TITL 3 B12-DEPENDENT ENZYMES REMARK 1 REF CURR.OPIN.STRUCT.BIOL. V. 4 919 1994 REMARK 1 REFN ISSN 0959-440X REMARK 2 REMARK 2 RESOLUTION. 3.00 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) : 3.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 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 : 9019 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) : 0.170 REMARK 3 FREE R VALUE : NULL 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 : 3814 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 184 REMARK 3 SOLVENT ATOMS : 2 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) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 1.610 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 1BMT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000171920. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL 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: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 51.75 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.55 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 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 48.35000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 51.90000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 27.65000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 51.90000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 48.35000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 27.65000 REMARK 290 SMTRY3 4 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 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 400 REMARK 400 COMPOUND REMARK 400 THE SECONDARY STRUCTURAL ELEMENTS WERE IDENTIFIED BY REMARK 400 HYDROGEN BONDING PATTERNS AND THE METHOD OF KABSCH AND REMARK 400 SANDER, 1983. 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 PRO B 785 C - N - CA ANGL. DEV. = 10.3 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 ALA A 652 -166.07 -176.44 REMARK 500 ARG A 655 21.46 -66.61 REMARK 500 LYS A 740 142.18 -170.08 REMARK 500 GLU A 741 -3.76 -146.12 REMARK 500 GLN A 742 -96.55 35.59 REMARK 500 VAL A 754 161.71 -44.25 REMARK 500 ASP A 760 -1.82 -151.39 REMARK 500 ASN A 774 71.88 68.94 REMARK 500 THR A 827 -8.57 -144.80 REMARK 500 GLN A 848 -31.75 -31.29 REMARK 500 ARG A 876 -79.65 -31.74 REMARK 500 HIS A 894 24.37 -70.39 REMARK 500 ARG B 655 7.52 -59.90 REMARK 500 TRP B 657 -173.23 -66.45 REMARK 500 LYS B 740 80.19 167.84 REMARK 500 GLN B 742 -135.71 38.83 REMARK 500 LYS B 744 -109.18 -119.55 REMARK 500 ASP B 760 -11.46 -146.11 REMARK 500 CYS B 772 5.87 -64.55 REMARK 500 ASN B 774 78.04 64.06 REMARK 500 ILE B 846 -63.85 -104.60 REMARK 500 ARG B 876 -77.28 -28.71 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 ARG A 823 0.10 SIDE CHAIN 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 COB A 122 CO REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 759 NE2 REMARK 620 2 COB A 122 N21 99.5 REMARK 620 3 COB A 122 N22 83.4 88.8 REMARK 620 4 COB A 122 N23 87.6 172.9 92.2 REMARK 620 5 COB A 122 N24 96.9 89.0 177.8 90.0 REMARK 620 6 COB A 122 C1A 167.4 90.8 89.6 82.2 90.5 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 COB B 122 CO REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 759 NE2 REMARK 620 2 COB B 122 N21 110.4 REMARK 620 3 COB B 122 N22 95.9 98.5 REMARK 620 4 COB B 122 N23 85.2 162.9 86.2 REMARK 620 5 COB B 122 N24 103.7 79.3 159.8 90.7 REMARK 620 6 COB B 122 C1A 168.5 81.1 82.4 83.3 77.4 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 COB A 122 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE COB B 122 DBREF 1BMT A 651 896 UNP P13009 METH_ECOLI 650 895 DBREF 1BMT B 651 896 UNP P13009 METH_ECOLI 650 895 SEQRES 1 A 246 GLN ALA GLU TRP ARG SER TRP GLU VAL ASN LYS ARG LEU SEQRES 2 A 246 GLU TYR SER LEU VAL LYS GLY ILE THR GLU PHE ILE GLU SEQRES 3 A 246 GLN ASP THR GLU GLU ALA ARG GLN GLN ALA THR ARG PRO SEQRES 4 A 246 ILE GLU VAL ILE GLU GLY PRO LEU MET ASP GLY MET ASN SEQRES 5 A 246 VAL VAL GLY ASP LEU PHE GLY GLU GLY LYS MET PHE LEU SEQRES 6 A 246 PRO GLN VAL VAL LYS SER ALA ARG VAL MET LYS GLN ALA SEQRES 7 A 246 VAL ALA TYR LEU GLU PRO PHE ILE GLU ALA SER LYS GLU SEQRES 8 A 246 GLN GLY LYS THR ASN GLY LYS MET VAL ILE ALA THR VAL SEQRES 9 A 246 LYS GLY ASP VAL HIS ASP ILE GLY LYS ASN ILE VAL GLY SEQRES 10 A 246 VAL VAL LEU GLN CYS ASN ASN TYR GLU ILE VAL ASP LEU SEQRES 11 A 246 GLY VAL MET VAL PRO ALA GLU LYS ILE LEU ARG THR ALA SEQRES 12 A 246 LYS GLU VAL ASN ALA ASP LEU ILE GLY LEU SER GLY LEU SEQRES 13 A 246 ILE THR PRO SER LEU ASP GLU MET VAL ASN VAL ALA LYS SEQRES 14 A 246 GLU MET GLU ARG GLN GLY PHE THR ILE PRO LEU LEU ILE SEQRES 15 A 246 GLY GLY ALA THR THR SER LYS ALA HIS THR ALA VAL LYS SEQRES 16 A 246 ILE GLU GLN ASN TYR SER GLY PRO THR VAL TYR VAL GLN SEQRES 17 A 246 ASN ALA SER ARG THR VAL GLY VAL VAL ALA ALA LEU LEU SEQRES 18 A 246 SER ASP THR GLN ARG ASP ASP PHE VAL ALA ARG THR ARG SEQRES 19 A 246 LYS GLU TYR GLU THR VAL ARG ILE GLN HIS GLY ARG SEQRES 1 B 246 GLN ALA GLU TRP ARG SER TRP GLU VAL ASN LYS ARG LEU SEQRES 2 B 246 GLU TYR SER LEU VAL LYS GLY ILE THR GLU PHE ILE GLU SEQRES 3 B 246 GLN ASP THR GLU GLU ALA ARG GLN GLN ALA THR ARG PRO SEQRES 4 B 246 ILE GLU VAL ILE GLU GLY PRO LEU MET ASP GLY MET ASN SEQRES 5 B 246 VAL VAL GLY ASP LEU PHE GLY GLU GLY LYS MET PHE LEU SEQRES 6 B 246 PRO GLN VAL VAL LYS SER ALA ARG VAL MET LYS GLN ALA SEQRES 7 B 246 VAL ALA TYR LEU GLU PRO PHE ILE GLU ALA SER LYS GLU SEQRES 8 B 246 GLN GLY LYS THR ASN GLY LYS MET VAL ILE ALA THR VAL SEQRES 9 B 246 LYS GLY ASP VAL HIS ASP ILE GLY LYS ASN ILE VAL GLY SEQRES 10 B 246 VAL VAL LEU GLN CYS ASN ASN TYR GLU ILE VAL ASP LEU SEQRES 11 B 246 GLY VAL MET VAL PRO ALA GLU LYS ILE LEU ARG THR ALA SEQRES 12 B 246 LYS GLU VAL ASN ALA ASP LEU ILE GLY LEU SER GLY LEU SEQRES 13 B 246 ILE THR PRO SER LEU ASP GLU MET VAL ASN VAL ALA LYS SEQRES 14 B 246 GLU MET GLU ARG GLN GLY PHE THR ILE PRO LEU LEU ILE SEQRES 15 B 246 GLY GLY ALA THR THR SER LYS ALA HIS THR ALA VAL LYS SEQRES 16 B 246 ILE GLU GLN ASN TYR SER GLY PRO THR VAL TYR VAL GLN SEQRES 17 B 246 ASN ALA SER ARG THR VAL GLY VAL VAL ALA ALA LEU LEU SEQRES 18 B 246 SER ASP THR GLN ARG ASP ASP PHE VAL ALA ARG THR ARG SEQRES 19 B 246 LYS GLU TYR GLU THR VAL ARG ILE GLN HIS GLY ARG HET COB A 122 92 HET COB B 122 92 HETNAM COB CO-METHYLCOBALAMIN FORMUL 3 COB 2(C63 H91 CO N13 O14 P 1+) FORMUL 5 HOH *2(H2 O) HELIX 1 A1 TRP A 654 SER A 656 5 3 HELIX 2 A2 VAL A 659 GLY A 670 1 12 HELIX 3 A3 PHE A 674 GLN A 684 1 11 HELIX 4 A4 PRO A 689 GLU A 710 1 22 HELIX 5 A5 PHE A 714 ALA A 738 1 25 HELIX 6 A6 ILE A 761 ASN A 773 1 13 HELIX 7 A7 PRO A 785 VAL A 796 1 12 HELIX 8 A8 ILE A 807 GLN A 824 1 18 HELIX 9 A9 SER A 838 VAL A 844 1 7 HELIX 10 A10 GLU A 847 ASN A 849 5 3 HELIX 11 A11 ALA A 860 LEU A 871 1 12 HELIX 12 A12 GLN A 875 GLN A 893 1 19 HELIX 13 B1 TRP B 654 SER B 656 5 3 HELIX 14 B2 VAL B 659 GLY B 670 1 12 HELIX 15 B3 PHE B 674 GLN B 684 1 11 HELIX 16 B4 PRO B 689 GLU B 710 1 22 HELIX 17 B5 PHE B 714 ALA B 738 1 25 HELIX 18 B6 ILE B 761 ASN B 773 1 13 HELIX 19 B7 PRO B 785 VAL B 796 1 12 HELIX 20 B8 ILE B 807 GLN B 824 1 18 HELIX 21 B9 SER B 838 VAL B 844 1 7 HELIX 22 B10 GLU B 847 ASN B 849 5 3 HELIX 23 B11 ALA B 860 LEU B 871 1 12 HELIX 24 B12 GLN B 875 GLN B 893 1 19 SHEET 1 B1A 5 GLU A 776 GLY A 781 0 SHEET 2 B1A 5 LYS A 748 VAL A 754 1 N MET A 749 O GLU A 776 SHEET 3 B1A 5 ASP A 799 GLY A 805 1 N LEU A 800 O LYS A 748 SHEET 4 B1A 5 PRO A 829 GLY A 833 1 O PRO A 829 N ILE A 801 SHEET 5 B1A 5 PRO A 853 VAL A 857 1 O PRO A 853 N LEU A 830 SHEET 1 B1B 5 GLU B 776 GLY B 781 0 SHEET 2 B1B 5 LYS B 748 VAL B 754 1 N MET B 749 O GLU B 776 SHEET 3 B1B 5 ASP B 799 GLY B 805 1 N LEU B 800 O LYS B 748 SHEET 4 B1B 5 PRO B 829 GLY B 833 1 O PRO B 829 N ILE B 801 SHEET 5 B1B 5 PRO B 853 VAL B 857 1 O PRO B 853 N LEU B 830 LINK CO COB A 122 NE2 HIS A 759 1555 1555 2.24 LINK CO COB B 122 NE2 HIS B 759 1555 1555 2.14 SITE 1 AC1 33 GLU A 694 MET A 698 MET A 701 GLY A 705 SITE 2 AC1 33 LEU A 715 VAL A 718 GLY A 756 ASP A 757 SITE 3 AC1 33 VAL A 758 HIS A 759 ASP A 760 ILE A 761 SITE 4 AC1 33 GLY A 762 ILE A 765 GLY A 802 LEU A 803 SITE 5 AC1 33 SER A 804 LEU A 806 ILE A 807 THR A 808 SITE 6 AC1 33 LEU A 831 GLY A 834 ALA A 835 VAL A 857 SITE 7 AC1 33 GLN A 858 ASN A 859 ALA A 860 THR A 863 SITE 8 AC1 33 GLN B 677 GLU B 680 ARG B 683 TYR B 731 SITE 9 AC1 33 PHE B 735 SITE 1 AC2 31 ALA A 738 GLU A 741 GLU B 694 MET B 698 SITE 2 AC2 31 MET B 701 VAL B 704 GLY B 705 LEU B 715 SITE 3 AC2 31 VAL B 718 MET B 725 ILE B 751 GLY B 756 SITE 4 AC2 31 ASP B 757 VAL B 758 HIS B 759 ASP B 760 SITE 5 AC2 31 ILE B 761 GLY B 762 ILE B 765 GLY B 802 SITE 6 AC2 31 LEU B 803 SER B 804 LEU B 806 ILE B 807 SITE 7 AC2 31 THR B 808 GLY B 834 ALA B 835 GLN B 858 SITE 8 AC2 31 ASN B 859 ALA B 860 THR B 863 CRYST1 96.700 55.300 103.800 90.00 90.00 90.00 P 21 21 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 0.010341 0.000000 0.000000 0.00000 SCALE2 0.000000 0.018083 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009634 0.00000