1CBF - Header Asymmetric Unit

HEADER METHYLTRANSFERASE 01-MAY-98 1CBF

TITLE THE X-RAY STRUCTURE OF A COBALAMIN BIOSYNTHETIC ENZYME, COBALT TITLE 2 PRECORRIN-4 METHYLTRANSFERASE, CBIF

COMPND MOL_ID: 1; COMPND 2 MOLECULE: COBALT-PRECORRIN-4 TRANSMETHYLASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PRECORRIN-4 METHYLASE, CBIF; COMPND 5 EC: 2.1.1.133; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS MEGATERIUM; SOURCE 3 ORGANISM_TAXID: 1404; SOURCE 4 CELL_LINE: BL21; SOURCE 5 ATCC: DSM 509; SOURCE 6 COLLECTION: DSM 509; SOURCE 7 GENE: CBIF; SOURCE 8 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 9 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 10 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3) LYSS; SOURCE 11 EXPRESSION_SYSTEM_PLASMID: PET14B

KEYWDS PRECORRIN-4 METHYLTRANSFERASE, METHYLASE, COBALAMIN BIOSYNTHESIS, KEYWDS 2 METHYLTRANSFERASE

EXPDTA X-RAY DIFFRACTION

AUTHOR H.L.SCHUBERT,E.RAUX,S.C.WOODCOCK,K.S.WILSON,M.J.WARREN

REVDAT 3 13-JUL-11 1CBF 1 VERSN REVDAT 2 24-FEB-09 1CBF 1 VERSN REVDAT 1 11-MAY-99 1CBF 0

JRNL AUTH H.L.SCHUBERT,K.S.WILSON,E.RAUX,S.C.WOODCOCK,M.J.WARREN JRNL TITL THE X-RAY STRUCTURE OF A COBALAMIN BIOSYNTHETIC ENZYME, JRNL TITL 2 COBALT-PRECORRIN-4 METHYLTRANSFERASE. JRNL REF NAT.STRUCT.BIOL. V. 5 585 1998 JRNL REFN ISSN 1072-8368 JRNL PMID 9665173 JRNL DOI 10.1038/846

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.RAUX,H.L.SCHUBERT,S.C.WOODCOCK,K.S.WILSON,M.J.WARREN REMARK 1 TITL COBALAMIN (VITAMIN B12) BIOSYNTHESIS--CLONING, EXPRESSION REMARK 1 TITL 2 AND CRYSTALLISATION OF THE BACILLUS MEGATERIUM REMARK 1 TITL 3 S-ADENOSYL-L-METHIONINE-DEPENDENT COBALT-PRECORRIN-4 REMARK 1 TITL 4 TRANSMETHYLASE CBIF REMARK 1 REF EUR.J.BIOCHEM. V. 254 341 1998 REMARK 1 REFN ISSN 0014-2956

REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 16587 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.195 REMARK 3 FREE R VALUE : 0.247 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 814 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1818 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 36 REMARK 3 SOLVENT ATOMS : 135 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): NULL REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): NULL REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; 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 OTHER REFINEMENT REMARKS: FREE R VALUE TEST SET SELECTION WAS REMARK 3 RANDOM, BUT FRIEDEL MATES ARE KEPT IN SAME SET.

REMARK 4 REMARK 4 1CBF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11

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-97 REMARK 200 TEMPERATURE (KELVIN) : 120 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SRS REMARK 200 BEAMLINE : PX9.5 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.91 REMARK 200 MONOCHROMATOR : SI(111) REMARK 200 OPTICS : PLATINUM COATED TORROIDAL MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16587 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 5.000 REMARK 200 R MERGE (I) : 0.03900 REMARK 200 R SYM (I) : 0.04000 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 21.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.44 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 5.00 REMARK 200 R MERGE FOR SHELL (I) : 0.12200 REMARK 200 R SYM FOR SHELL (I) : 0.11500 REMARK 200 <I/SIGMA(I)> FOR SHELL : 10.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MULTIPLE ISOMORPHOUS REMARK 200 REPLACEMENT REMARK 200 SOFTWARE USED: MLPHARE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 63.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.32 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 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 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -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 36.46667 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 72.93333 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 72.93333 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 36.46667 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 5240 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19950 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -57.0 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 -0.866025 0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 145.86667

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 MET A 1 REMARK 465 GLY A 2 REMARK 465 SER A 3 REMARK 465 SER A 4 REMARK 465 HIS A 5 REMARK 465 HIS A 6 REMARK 465 HIS A 7 REMARK 465 HIS A 8 REMARK 465 HIS A 9 REMARK 465 HIS A 10 REMARK 465 SER A 11 REMARK 465 SER A 12 REMARK 465 ALA A 252 REMARK 465 THR A 253 REMARK 465 PRO A 254 REMARK 465 TRP A 255 REMARK 465 LEU A 256 REMARK 465 SER A 257 REMARK 465 GLY A 258 REMARK 465 LEU A 259 REMARK 465 GLY A 260 REMARK 465 GLU A 261 REMARK 465 ASN A 262 REMARK 465 PRO A 263 REMARK 465 ALA A 264 REMARK 465 ILE A 265 REMARK 465 ARG A 266 REMARK 465 ALA A 267 REMARK 465 MET A 268 REMARK 465 PHE A 269 REMARK 465 VAL A 270 REMARK 465 ALA A 271 REMARK 465 HIS A 272 REMARK 465 LEU A 273 REMARK 465 HIS A 274 REMARK 465 GLN A 275 REMARK 465 ALA A 276 REMARK 465 LEU A 277 REMARK 465 ASN A 278 REMARK 465 MET A 279 REMARK 465 ALA A 280 REMARK 465 VAL A 281 REMARK 465 GLU A 282 REMARK 465 GLU A 283 REMARK 465 ALA A 284 REMARK 465 ALA A 285

REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH A 508 O HOH A 508 6556 0.36 REMARK 500 O HOH A 562 CD1 LEU A 14 3454 1.57 REMARK 500 CG LEU A 14 O HOH A 562 2565 1.69 REMARK 500 O HOH A 619 O HOH A 624 6556 1.80 REMARK 500 O HOH A 562 CD2 LEU A 14 3454 2.02 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 ASP A 34 CB - CG - OD1 ANGL. DEV. = 6.6 DEGREES REMARK 500 ASP A 60 CB - CG - OD2 ANGL. DEV. = 7.9 DEGREES REMARK 500 GLU A 70 OE1 - CD - OE2 ANGL. DEV. = -7.2 DEGREES REMARK 500 VAL A 97 N - CA - CB ANGL. DEV. = -13.9 DEGREES REMARK 500 ARG A 98 NE - CZ - NH1 ANGL. DEV. = 5.0 DEGREES REMARK 500 ARG A 119 NE - CZ - NH1 ANGL. DEV. = -3.1 DEGREES REMARK 500 ASP A 123 CB - CG - OD2 ANGL. DEV. = 7.9 DEGREES REMARK 500 VAL A 133 CB - CA - C ANGL. DEV. = -15.6 DEGREES REMARK 500 VAL A 133 CA - CB - CG2 ANGL. DEV. = 10.5 DEGREES REMARK 500 ARG A 157 NE - CZ - NH1 ANGL. DEV. = 5.0 DEGREES REMARK 500 ARG A 157 NE - CZ - NH2 ANGL. DEV. = -3.2 DEGREES REMARK 500 GLU A 159 CG - CD - OE2 ANGL. DEV. = 12.3 DEGREES REMARK 500 ARG A 161 NE - CZ - NH1 ANGL. DEV. = 5.3 DEGREES REMARK 500 ARG A 161 NE - CZ - NH2 ANGL. DEV. = -7.2 DEGREES REMARK 500 ASP A 217 CB - CG - OD2 ANGL. DEV. = 6.0 DEGREES REMARK 500 ARG A 222 NE - CZ - NH1 ANGL. DEV. = -3.0 DEGREES REMARK 500 ARG A 233 CG - CD - NE ANGL. DEV. = 13.6 DEGREES REMARK 500 ARG A 233 CD - NE - CZ ANGL. DEV. = 29.2 DEGREES REMARK 500 LEU A 249 CB - CG - CD1 ANGL. DEV. = -11.1 DEGREES REMARK 500 PRO A 251 C - N - CD ANGL. DEV. = 13.1 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 SER A 55 68.52 30.93 REMARK 500 LEU A 56 -35.35 -171.62 REMARK 500 ASP A 148 -1.86 78.69 REMARK 500 PRO A 165 151.74 -48.81 REMARK 500 CYS A 178 -165.35 -103.44 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 ILE A 25 16.39 REMARK 500 ILE A 62 -10.27 REMARK 500 ARG A 98 10.69 REMARK 500 GLY A 160 -10.40 REMARK 500 THR A 162 11.17 REMARK 500 ASP A 229 -10.02 REMARK 500 REMARK 500 REMARK: NULL

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: SAH REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: S-ADENOSYL-HOMOCYSTEINE BINDING SITE. CRYSTALS REMARK 800 FORMED IN THE PRESENCE OF ADOMET OR ADOHCY. REMARK 800 REMARK 800 SITE_IDENTIFIER: P-4 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: PRECORRIN-4 BINDING SITE IN DEEP TROUGH. ALSO, REMARK 800 LOCATION OF BOUND PHOSPHATE RESIDUE 401. PHOSPHATE PRESENT FROM REMARK 800 CRYSTALLIZATION CONDITIONS. REMARK 800 REMARK 800 SITE_IDENTIFIER: PAL REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: PHOSPHATE ION INVOLVED IN CRYSTAL CONTACT. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 400 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SAH A 300

DBREF 1CBF A 21 259 UNP O87696 CBIF_BACME 1 242

SEQADV 1CBF SER A 186 UNP O87696 ALA 166 CONFLICT SEQADV 1CBF A UNP O87696 HIS 232 DELETION SEQADV 1CBF A UNP O87696 ILE 233 DELETION SEQADV 1CBF A UNP O87696 HIS 234 DELETION SEQADV 1CBF ALA A 252 UNP O87696 ASP 235 CONFLICT SEQADV 1CBF THR A 253 UNP O87696 LYS 236 CONFLICT SEQADV 1CBF PRO A 254 UNP O87696 ASP 237 CONFLICT SEQADV 1CBF TRP A 255 UNP O87696 TYR 238 CONFLICT SEQADV 1CBF LEU A 256 UNP O87696 ARG 239 CONFLICT SEQADV 1CBF GLY A 258 UNP O87696 LYS 241 CONFLICT

SEQRES 1 A 285 MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY SEQRES 2 A 285 LEU VAL PRO ARG GLY SER HIS MET LYS LEU TYR ILE ILE SEQRES 3 A 285 GLY ALA GLY PRO GLY ASP PRO ASP LEU ILE THR VAL LYS SEQRES 4 A 285 GLY LEU LYS LEU LEU GLN GLN ALA ASP VAL VAL LEU TYR SEQRES 5 A 285 ALA ASP SER LEU VAL SER GLN ASP LEU ILE ALA LYS SER SEQRES 6 A 285 LYS PRO GLY ALA GLU VAL LEU LYS THR ALA GLY MET HIS SEQRES 7 A 285 LEU GLU GLU MET VAL GLY THR MET LEU ASP ARG MET ARG SEQRES 8 A 285 GLU GLY LYS MET VAL VAL ARG VAL HIS THR GLY ASP PRO SEQRES 9 A 285 ALA MET TYR GLY ALA ILE MET GLU GLN MET VAL LEU LEU SEQRES 10 A 285 LYS ARG GLU GLY VAL ASP ILE GLU ILE VAL PRO GLY VAL SEQRES 11 A 285 THR SER VAL PHE ALA ALA ALA ALA ALA ALA GLU ALA GLU SEQRES 12 A 285 LEU THR ILE PRO ASP LEU THR GLN THR VAL ILE LEU THR SEQRES 13 A 285 ARG ALA GLU GLY ARG THR PRO VAL PRO GLU PHE GLU LYS SEQRES 14 A 285 LEU THR ASP LEU ALA LYS HIS LYS CYS THR ILE ALA LEU SEQRES 15 A 285 PHE LEU SER SER THR LEU THR LYS LYS VAL MET LYS GLU SEQRES 16 A 285 PHE ILE ASN ALA GLY TRP SER GLU ASP THR PRO VAL VAL SEQRES 17 A 285 VAL VAL TYR LYS ALA THR TRP PRO ASP GLU LYS ILE VAL SEQRES 18 A 285 ARG THR THR VAL LYS ASP LEU ASP ASP ALA MET ARG THR SEQRES 19 A 285 ASN GLY ILE ARG LYS GLN ALA MET ILE LEU ALA GLY TRP SEQRES 20 A 285 ALA LEU ASP PRO ALA THR PRO TRP LEU SER GLY LEU GLY SEQRES 21 A 285 GLU ASN PRO ALA ILE ARG ALA MET PHE VAL ALA HIS LEU SEQRES 22 A 285 HIS GLN ALA LEU ASN MET ALA VAL GLU GLU ALA ALA

HET PO4 A 400 5 HET PO4 A 401 5 HET SAH A 300 26

HETNAM PO4 PHOSPHATE ION HETNAM SAH S-ADENOSYL-L-HOMOCYSTEINE

FORMUL 2 PO4 2(O4 P 3-) FORMUL 4 SAH C14 H20 N6 O5 S FORMUL 5 HOH *135(H2 O)

HELIX 1 1 PRO A 33 LEU A 35 5 3 HELIX 2 2 VAL A 38 GLN A 46 1 9 HELIX 3 3 GLN A 59 LYS A 64 1 6 HELIX 4 4 LEU A 79 GLU A 92 1 14 HELIX 5 5 MET A 111 GLU A 120 1 10 HELIX 6 6 SER A 132 ALA A 139 1 8 HELIX 7 7 GLU A 166 GLU A 168 5 3 HELIX 8 8 LEU A 170 HIS A 176 1 7 HELIX 9 9 THR A 189 ASN A 198 1 10 HELIX 10 10 VAL A 225 THR A 234 5 10 HELIX 11 11 TRP A 247 LEU A 249 5 3

SHEET 1 A 5 ASP A 123 VAL A 127 0 SHEET 2 A 5 LYS A 22 GLY A 27 1 N LEU A 23 O ASP A 123 SHEET 3 A 5 VAL A 96 HIS A 100 1 N VAL A 96 O TYR A 24 SHEET 4 A 5 VAL A 49 TYR A 52 1 N VAL A 49 O VAL A 97 SHEET 5 A 5 GLU A 70 LYS A 73 1 N GLU A 70 O VAL A 50 SHEET 1 B 5 VAL A 153 ARG A 157 0 SHEET 2 B 5 THR A 179 PHE A 183 1 N THR A 179 O ILE A 154 SHEET 3 B 5 ALA A 241 ALA A 245 -1 N ALA A 245 O ILE A 180 SHEET 4 B 5 PRO A 206 TYR A 211 -1 N VAL A 210 O MET A 242 SHEET 5 B 5 LYS A 219 THR A 224 -1 N THR A 223 O VAL A 207

SITE 1 SAH 1 SAH A 300 SITE 1 P-4 7 PO4 A 401 ALA A 53 SER A 55 LEU A 79 SITE 2 P-4 7 ARG A 98 GLU A 112 GLN A 113 SITE 1 PAL 1 PO4 A 400 SITE 1 AC1 11 PRO A 16 ARG A 17 GLY A 18 SER A 19 SITE 2 AC1 11 HIS A 20 GLY A 160 ARG A 161 THR A 162 SITE 3 AC1 11 HOH A 574 HOH A 576 HOH A 577 SITE 1 AC2 5 HIS A 100 THR A 101 GLY A 108 HOH A 504 SITE 2 AC2 5 HOH A 613 SITE 1 AC3 18 PRO A 30 THR A 101 GLY A 102 ASP A 103 SITE 2 AC3 18 MET A 106 THR A 131 SER A 132 PHE A 183 SITE 3 AC3 18 LEU A 184 VAL A 210 LYS A 212 ALA A 213 SITE 4 AC3 18 GLN A 240 ALA A 241 MET A 242 HOH A 504 SITE 5 AC3 18 HOH A 509 HOH A 519

CRYST1 80.700 80.700 109.400 90.00 90.00 120.00 P 31 2 1 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 0.012392 0.007154 0.000000 0.00000

SCALE2 0.000000 0.014309 0.000000 0.00000

SCALE3 0.000000 0.000000 0.009141 0.00000