HEADER OXIDOREDUCTASE 06-JUN-11 3SC0 TITLE CRYSTAL STRUCTURE OF MMACHC (1-238), A HUMAN B12 PROCESSING ENZYME, TITLE 2 COMPLEXED WITH METHYLCOBALAMIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: METHYLMALONIC ACIDURIA AND HOMOCYSTINURIA TYPE C PROTEIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: B12 BINDING DOMAIN, RESIDUES 1-238; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: MMACHC; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PMCSG7 KEYWDS MMACHC, CBLC, COBALAMIN, FLAVIN, GLUTATHIONE, FLAVIN REDUCTASE, KEYWDS 2 OXIDOREDUCTASE, MATURASE EXPDTA X-RAY DIFFRACTION AUTHOR M.KOUTMOS,C.GHERASIM,J.L.SMITH,R.BANERJEE REVDAT 7 13-SEP-23 3SC0 1 REMARK SEQADV REVDAT 6 17-JUL-19 3SC0 1 REMARK REVDAT 5 08-NOV-17 3SC0 1 REMARK REVDAT 4 25-APR-12 3SC0 1 JRNL REVDAT 3 10-AUG-11 3SC0 1 JRNL REVDAT 2 20-JUL-11 3SC0 1 AUTHOR REVDAT 1 22-JUN-11 3SC0 0 JRNL AUTH M.KOUTMOS,C.GHERASIM,J.L.SMITH,R.BANERJEE JRNL TITL STRUCTURAL BASIS OF MULTIFUNCTIONALITY IN A VITAMIN JRNL TITL 2 B12-PROCESSING ENZYME. JRNL REF J.BIOL.CHEM. V. 286 29780 2011 JRNL REFN ISSN 0021-9258 JRNL PMID 21697092 JRNL DOI 10.1074/JBC.M111.261370 REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.6_289 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) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 40.29 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.140 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.9 REMARK 3 NUMBER OF REFLECTIONS : 20022 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.189 REMARK 3 R VALUE (WORKING SET) : 0.186 REMARK 3 FREE R VALUE : 0.244 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.080 REMARK 3 FREE R VALUE TEST SET COUNT : 1018 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 40.3016 - 3.7294 0.99 0 143 0.1955 0.2239 REMARK 3 2 3.7294 - 2.9604 0.99 0 113 0.1705 0.2355 REMARK 3 3 2.9604 - 2.5863 0.98 0 161 0.1880 0.2743 REMARK 3 4 2.5863 - 2.3499 0.97 0 152 0.1729 0.2456 REMARK 3 5 2.3499 - 2.1814 0.95 0 158 0.1791 0.2352 REMARK 3 6 2.1814 - 2.0528 0.93 0 154 0.1737 0.2386 REMARK 3 7 2.0528 - 1.9500 0.89 0 137 0.1962 0.2535 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : 0.41 REMARK 3 B_SOL : 43.89 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.250 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 20.790 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 34.05 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.96640 REMARK 3 B22 (A**2) : -1.96640 REMARK 3 B33 (A**2) : 3.93290 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 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 : 0.012 NULL REMARK 3 ANGLE : 1.552 NULL REMARK 3 CHIRALITY : 0.123 NULL REMARK 3 PLANARITY : 0.010 NULL REMARK 3 DIHEDRAL : 27.904 NULL 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 3SC0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-JUN-11. REMARK 100 THE DEPOSITION ID IS D_1000066018. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-JUL-10 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 23-ID-D REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.03299 REMARK 200 MONOCHROMATOR : DOUBLE CRYSTAL MONOCHROMATOR REMARK 200 OPTICS : K-B PAIR OF BIOMORPH MIRRORS FOR REMARK 200 VERTICAL AND HORIZONTAL FOCUSING REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARMOSAIC 300 MM CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000, DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK, HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 22478 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 6.900 REMARK 200 R MERGE (I) : 0.08200 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 11.2000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.97 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.5 REMARK 200 DATA REDUNDANCY IN SHELL : 3.70 REMARK 200 R MERGE FOR SHELL (I) : 0.67200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 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: PHASER REMARK 200 STARTING MODEL: 3SBY REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.47 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.48 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 2.0 M AMMONIUM SULFATE, AND 0.1 M REMARK 280 TRIS.HCL PH 8.5, VAPOR DIFFUSION, TEMPERATURE 277K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 62 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+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -X,-Y,Z REMARK 290 5555 Y,-X+Y,Z+2/3 REMARK 290 6555 X-Y,X,Z+1/3 REMARK 290 7555 Y,X,-Z+2/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+1/3 REMARK 290 10555 -Y,-X,-Z+2/3 REMARK 290 11555 -X+Y,Y,-Z REMARK 290 12555 X,X-Y,-Z+1/3 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 56.16867 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 28.08433 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 0.00000 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 56.16867 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 28.08433 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 56.16867 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 28.08433 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 56.16867 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 0.00000 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 28.08433 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 2090 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 23490 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -15.0 KCAL/MOL 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 BIOMT1 2 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 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 SER A -2 REMARK 465 ASN A -1 REMARK 465 ALA A 0 REMARK 465 MET A 1 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 H CYS A 149 H332 COB A 300 1.16 REMARK 500 O HOH A 325 O HOH A 387 2.14 REMARK 500 REMARK 500 REMARK: NULL 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 TYR A 31 CD1 - CE1 - CZ ANGL. DEV. = 8.7 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 62 -52.09 -122.18 REMARK 500 HIS A 199 27.96 -142.99 REMARK 500 TRP A 203 -11.64 78.15 REMARK 500 PHE A 223 70.72 -67.37 REMARK 500 THR A 225 109.48 152.89 REMARK 500 ARG A 230 -56.06 -144.40 REMARK 500 LEU A 234 -14.34 67.38 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 ALA A 228 GLN A 229 -148.08 REMARK 500 REMARK 500 REMARK: NULL 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 300 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3SBY RELATED DB: PDB REMARK 900 RELATED ID: 3SBZ RELATED DB: PDB DBREF 3SC0 A 1 238 UNP Q9Y4U1 MMAC_HUMAN 1 238 SEQADV 3SC0 SER A -2 UNP Q9Y4U1 EXPRESSION TAG SEQADV 3SC0 ASN A -1 UNP Q9Y4U1 EXPRESSION TAG SEQADV 3SC0 ALA A 0 UNP Q9Y4U1 EXPRESSION TAG SEQRES 1 A 241 SER ASN ALA MET GLU PRO LYS VAL ALA GLU LEU LYS GLN SEQRES 2 A 241 LYS ILE GLU ASP THR LEU CYS PRO PHE GLY PHE GLU VAL SEQRES 3 A 241 TYR PRO PHE GLN VAL ALA TRP TYR ASN GLU LEU LEU PRO SEQRES 4 A 241 PRO ALA PHE HIS LEU PRO LEU PRO GLY PRO THR LEU ALA SEQRES 5 A 241 PHE LEU VAL LEU SER THR PRO ALA MET PHE ASP ARG ALA SEQRES 6 A 241 LEU LYS PRO PHE LEU GLN SER CYS HIS LEU ARG MET LEU SEQRES 7 A 241 THR ASP PRO VAL ASP GLN CYS VAL ALA TYR HIS LEU GLY SEQRES 8 A 241 ARG VAL ARG GLU SER LEU PRO GLU LEU GLN ILE GLU ILE SEQRES 9 A 241 ILE ALA ASP TYR GLU VAL HIS PRO ASN ARG ARG PRO LYS SEQRES 10 A 241 ILE LEU ALA GLN THR ALA ALA HIS VAL ALA GLY ALA ALA SEQRES 11 A 241 TYR TYR TYR GLN ARG GLN ASP VAL GLU ALA ASP PRO TRP SEQRES 12 A 241 GLY ASN GLN ARG ILE SER GLY VAL CYS ILE HIS PRO ARG SEQRES 13 A 241 PHE GLY GLY TRP PHE ALA ILE ARG GLY VAL VAL LEU LEU SEQRES 14 A 241 PRO GLY ILE GLU VAL PRO ASP LEU PRO PRO ARG LYS PRO SEQRES 15 A 241 HIS ASP CYS VAL PRO THR ARG ALA ASP ARG ILE ALA LEU SEQRES 16 A 241 LEU GLU GLY PHE ASN PHE HIS TRP ARG ASP TRP THR TYR SEQRES 17 A 241 ARG ASP ALA VAL THR PRO GLN GLU ARG TYR SER GLU GLU SEQRES 18 A 241 GLN LYS ALA TYR PHE SER THR PRO PRO ALA GLN ARG LEU SEQRES 19 A 241 ALA LEU LEU GLY LEU ALA GLN HET COB A 300 178 HETNAM COB CO-METHYLCOBALAMIN FORMUL 2 COB C63 H91 CO N13 O14 P 1+ FORMUL 3 HOH *179(H2 O) HELIX 1 1 GLU A 2 CYS A 17 1 16 HELIX 2 2 VAL A 28 GLU A 33 1 6 HELIX 3 3 LEU A 34 LEU A 35 5 2 HELIX 4 4 PRO A 36 HIS A 40 5 5 HELIX 5 5 ALA A 57 ALA A 62 1 6 HELIX 6 6 ALA A 62 LEU A 67 1 6 HELIX 7 7 ASP A 77 LEU A 94 1 18 HELIX 8 8 LEU A 116 ALA A 124 1 9 HELIX 9 9 GLN A 131 VAL A 135 5 5 HELIX 10 10 THR A 185 HIS A 199 1 15 HELIX 11 11 TRP A 200 ALA A 208 5 9 HELIX 12 12 SER A 216 PHE A 223 1 8 HELIX 13 13 THR A 225 ARG A 230 1 6 SHEET 1 A 4 PHE A 21 GLN A 27 0 SHEET 2 A 4 THR A 47 SER A 54 -1 O LEU A 51 N TYR A 24 SHEET 3 A 4 ALA A 159 GLU A 170 -1 O GLY A 162 N VAL A 52 SHEET 4 A 4 GLU A 100 ALA A 103 -1 N GLU A 100 O LEU A 165 SHEET 1 B 2 TYR A 128 TYR A 130 0 SHEET 2 B 2 VAL A 148 ILE A 150 -1 O VAL A 148 N TYR A 130 SITE 1 AC1 28 LEU A 34 LEU A 35 PRO A 36 ASP A 104 SITE 2 AC1 28 PRO A 113 ILE A 115 ALA A 117 GLN A 118 SITE 3 AC1 28 THR A 119 HIS A 122 TYR A 129 GLN A 131 SITE 4 AC1 28 GLN A 133 SER A 146 VAL A 148 CYS A 149 SITE 5 AC1 28 ALA A 159 ILE A 160 PHE A 196 TRP A 200 SITE 6 AC1 28 HOH A 242 HOH A 246 HOH A 247 HOH A 248 SITE 7 AC1 28 HOH A 294 HOH A 349 HOH A 355 HOH A 390 CRYST1 105.955 105.955 84.253 90.00 90.00 120.00 P 62 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 0.009438 0.005449 0.000000 0.00000 SCALE2 0.000000 0.010898 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011869 0.00000