HEADER TRANSPORT PROTEIN 30-OCT-02 1N4A TITLE THE LIGAND BOUND STRUCTURE OF E.COLI BTUF, THE PERIPLASMIC BINDING TITLE 2 PROTEIN FOR VITAMIN B12 COMPND MOL_ID: 1; COMPND 2 MOLECULE: VITAMIN B12 TRANSPORT PROTEIN BTUF; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET24A KEYWDS ABC TRANSPORTER, PERIPLASMIC BINDING PROTEIN, VITAMIN B12, KEYWDS 2 TRANSMEMBRANE TRANSPORT, STRUCTURAL GENOMICS, PSI, PROTEIN STRUCTURE KEYWDS 3 INITIATIVE, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM, NESG, KEYWDS 4 TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR N.K.KARPOWICH,P.C.SMITH,J.F.HUNT,NORTHEAST STRUCTURAL GENOMICS AUTHOR 2 CONSORTIUM (NESG) REVDAT 5 18-AUG-21 1N4A 1 COMPND REMARK SEQADV HETNAM REVDAT 5 2 1 FORMUL LINK REVDAT 4 08-FEB-17 1N4A 1 AUTHOR JRNL VERSN REVDAT 3 24-FEB-09 1N4A 1 VERSN REVDAT 2 25-JAN-05 1N4A 1 AUTHOR KEYWDS REMARK REVDAT 1 11-MAR-03 1N4A 0 JRNL AUTH N.K.KARPOWICH,H.H.HUANG,P.C.SMITH,J.F.HUNT JRNL TITL CRYSTAL STRUCTURES OF THE BTUF PERIPLASMIC-BINDING PROTEIN JRNL TITL 2 FOR VITAMIN B12 SUGGEST A FUNCTIONALLY IMPORTANT REDUCTION JRNL TITL 3 IN PROTEIN MOBILITY UPON LIGAND BINDING. JRNL REF J.BIOL.CHEM. V. 278 8429 2003 JRNL REFN ISSN 0021-9258 JRNL PMID 12468528 JRNL DOI 10.1074/JBC.M212239200 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0100 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 24.4 REMARK 3 NUMBER OF REFLECTIONS : 34564 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.234 REMARK 3 FREE R VALUE : 0.261 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1732 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.013 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 18.20 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3081 REMARK 3 BIN R VALUE (WORKING SET) : 0.2120 REMARK 3 BIN FREE R VALUE : 0.2620 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 152 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.043 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3804 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 186 REMARK 3 SOLVENT ATOMS : 549 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 24.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.50 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 8.82000 REMARK 3 B22 (A**2) : -5.91000 REMARK 3 B33 (A**2) : -2.91000 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.64 REMARK 3 ESD FROM SIGMAA (A) : 0.26 REMARK 3 LOW RESOLUTION CUTOFF (A) : 2.50 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.63 REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.50 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.310 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : 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 : PS_PARAM REMARK 3 PARAMETER FILE 2 : PARAM1 REMARK 3 PARAMETER FILE 3 : C REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PS_TOP REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : C REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: BULK SOLVENT MODEL USED REMARK 4 REMARK 4 1N4A COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-NOV-02. REMARK 100 THE DEPOSITION ID IS D_1000017500. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-NOV-02 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 4.6 REMARK 200 NUMBER OF CRYSTALS USED : 2 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X12C REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9785 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 : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 34910 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 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 (%) : 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: MAD REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD REMARK 200 SOFTWARE USED: SOLVE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.81 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.13 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NACL, ETHANOL, ACETATE, PH 4.6, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 294K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -X+1/2,Y+1/2,-Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 65.86500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 46.01000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 65.86500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 46.01000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 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 LEU A 245 REMARK 465 GLU A 246 REMARK 465 HIS A 247 REMARK 465 HIS A 248 REMARK 465 HIS A 249 REMARK 465 HIS A 250 REMARK 465 HIS A 251 REMARK 465 HIS A 252 REMARK 465 LEU B 5245 REMARK 465 GLU B 5246 REMARK 465 HIS B 5247 REMARK 465 HIS B 5248 REMARK 465 HIS B 5249 REMARK 465 HIS B 5250 REMARK 465 HIS B 5251 REMARK 465 HIS B 5252 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 A 144 C - N - CD ANGL. DEV. = -15.3 DEGREES REMARK 500 PRO A 144 N - CA - C ANGL. DEV. = 17.3 DEGREES REMARK 500 PRO A 145 C - N - CA ANGL. DEV. = 15.9 DEGREES REMARK 500 PRO B5144 C - N - CD ANGL. DEV. = -20.3 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 ASP A 86 60.75 -152.35 REMARK 500 LYS A 211 77.85 -115.24 REMARK 500 ASP B5086 58.18 -149.30 REMARK 500 GLN B5106 70.20 -151.43 REMARK 500 PRO B5145 -157.78 -101.45 REMARK 500 SER B5186 68.07 39.90 REMARK 500 LYS B5211 72.59 -108.28 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 CNC A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC B 5501 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1EFD RELATED DB: PDB REMARK 900 FHUD BOUND TO GALLICHROME REMARK 900 RELATED ID: 1BMT RELATED DB: PDB REMARK 900 METHIONINE SYNTHASE REMARK 900 RELATED ID: 1N4D RELATED DB: PDB REMARK 900 RELATED ID: EC1 RELATED DB: TARGETDB DBREF 1N4A A 1 244 UNP P37028 BTUF_ECOLI 23 266 DBREF 1N4A B 5001 5244 UNP P37028 BTUF_ECOLI 23 266 SEQADV 1N4A MSE A 47 UNP P37028 MET 69 MODIFIED RESIDUE SEQADV 1N4A MSE A 83 UNP P37028 MET 105 MODIFIED RESIDUE SEQADV 1N4A LEU A 245 UNP P37028 EXPRESSION TAG SEQADV 1N4A GLU A 246 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 247 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 248 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 249 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 250 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 251 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS A 252 UNP P37028 EXPRESSION TAG SEQADV 1N4A MSE B 5047 UNP P37028 MET 69 MODIFIED RESIDUE SEQADV 1N4A MSE B 5083 UNP P37028 MET 105 MODIFIED RESIDUE SEQADV 1N4A LEU B 5245 UNP P37028 EXPRESSION TAG SEQADV 1N4A GLU B 5246 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5247 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5248 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5249 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5250 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5251 UNP P37028 EXPRESSION TAG SEQADV 1N4A HIS B 5252 UNP P37028 EXPRESSION TAG SEQRES 1 A 252 ALA PRO ARG VAL ILE THR LEU SER PRO ALA ASN THR GLU SEQRES 2 A 252 LEU ALA PHE ALA ALA GLY ILE THR PRO VAL GLY VAL SER SEQRES 3 A 252 SER TYR SER ASP TYR PRO PRO GLN ALA GLN LYS ILE GLU SEQRES 4 A 252 GLN VAL SER THR TRP GLN GLY MSE ASN LEU GLU ARG ILE SEQRES 5 A 252 VAL ALA LEU LYS PRO ASP LEU VAL ILE ALA TRP ARG GLY SEQRES 6 A 252 GLY ASN ALA GLU ARG GLN VAL ASP GLN LEU ALA SER LEU SEQRES 7 A 252 GLY ILE LYS VAL MSE TRP VAL ASP ALA THR SER ILE GLU SEQRES 8 A 252 GLN ILE ALA ASN ALA LEU ARG GLN LEU ALA PRO TRP SER SEQRES 9 A 252 PRO GLN PRO ASP LYS ALA GLU GLN ALA ALA GLN SER LEU SEQRES 10 A 252 LEU ASP GLN TYR ALA GLN LEU LYS ALA GLN TYR ALA ASP SEQRES 11 A 252 LYS PRO LYS LYS ARG VAL PHE LEU GLN PHE GLY ILE ASN SEQRES 12 A 252 PRO PRO PHE THR SER GLY LYS GLU SER ILE GLN ASN GLN SEQRES 13 A 252 VAL LEU GLU VAL CYS GLY GLY GLU ASN ILE PHE LYS ASP SEQRES 14 A 252 SER ARG VAL PRO TRP PRO GLN VAL SER ARG GLU GLN VAL SEQRES 15 A 252 LEU ALA ARG SER PRO GLN ALA ILE VAL ILE THR GLY GLY SEQRES 16 A 252 PRO ASP GLN ILE PRO LYS ILE LYS GLN TYR TRP GLY GLU SEQRES 17 A 252 GLN LEU LYS ILE PRO VAL ILE PRO LEU THR SER ASP TRP SEQRES 18 A 252 PHE GLU ARG ALA SER PRO ARG ILE ILE LEU ALA ALA GLN SEQRES 19 A 252 GLN LEU CYS ASN ALA LEU SER GLN VAL ASP LEU GLU HIS SEQRES 20 A 252 HIS HIS HIS HIS HIS SEQRES 1 B 252 ALA PRO ARG VAL ILE THR LEU SER PRO ALA ASN THR GLU SEQRES 2 B 252 LEU ALA PHE ALA ALA GLY ILE THR PRO VAL GLY VAL SER SEQRES 3 B 252 SER TYR SER ASP TYR PRO PRO GLN ALA GLN LYS ILE GLU SEQRES 4 B 252 GLN VAL SER THR TRP GLN GLY MSE ASN LEU GLU ARG ILE SEQRES 5 B 252 VAL ALA LEU LYS PRO ASP LEU VAL ILE ALA TRP ARG GLY SEQRES 6 B 252 GLY ASN ALA GLU ARG GLN VAL ASP GLN LEU ALA SER LEU SEQRES 7 B 252 GLY ILE LYS VAL MSE TRP VAL ASP ALA THR SER ILE GLU SEQRES 8 B 252 GLN ILE ALA ASN ALA LEU ARG GLN LEU ALA PRO TRP SER SEQRES 9 B 252 PRO GLN PRO ASP LYS ALA GLU GLN ALA ALA GLN SER LEU SEQRES 10 B 252 LEU ASP GLN TYR ALA GLN LEU LYS ALA GLN TYR ALA ASP SEQRES 11 B 252 LYS PRO LYS LYS ARG VAL PHE LEU GLN PHE GLY ILE ASN SEQRES 12 B 252 PRO PRO PHE THR SER GLY LYS GLU SER ILE GLN ASN GLN SEQRES 13 B 252 VAL LEU GLU VAL CYS GLY GLY GLU ASN ILE PHE LYS ASP SEQRES 14 B 252 SER ARG VAL PRO TRP PRO GLN VAL SER ARG GLU GLN VAL SEQRES 15 B 252 LEU ALA ARG SER PRO GLN ALA ILE VAL ILE THR GLY GLY SEQRES 16 B 252 PRO ASP GLN ILE PRO LYS ILE LYS GLN TYR TRP GLY GLU SEQRES 17 B 252 GLN LEU LYS ILE PRO VAL ILE PRO LEU THR SER ASP TRP SEQRES 18 B 252 PHE GLU ARG ALA SER PRO ARG ILE ILE LEU ALA ALA GLN SEQRES 19 B 252 GLN LEU CYS ASN ALA LEU SER GLN VAL ASP LEU GLU HIS SEQRES 20 B 252 HIS HIS HIS HIS HIS MODRES 1N4A MSE A 47 MET SELENOMETHIONINE MODRES 1N4A MSE A 83 MET SELENOMETHIONINE MODRES 1N4A MSE B 5047 MET SELENOMETHIONINE MODRES 1N4A MSE B 5083 MET SELENOMETHIONINE HET MSE A 47 8 HET MSE A 83 8 HET MSE B5047 8 HET MSE B5083 8 HET CNC A 501 93 HET CNC B5501 93 HETNAM MSE SELENOMETHIONINE HETNAM CNC CYANOCOBALAMIN FORMUL 1 MSE 4(C5 H11 N O2 SE) FORMUL 3 CNC 2(C63 H89 CO N14 O14 P 2+) FORMUL 5 HOH *549(H2 O) HELIX 1 1 SER A 8 ALA A 18 1 11 HELIX 2 2 PRO A 32 ILE A 38 5 7 HELIX 3 3 ASN A 48 LEU A 55 1 8 HELIX 4 4 ALA A 68 ASP A 73 1 6 HELIX 5 5 ASP A 73 LEU A 78 1 6 HELIX 6 6 SER A 89 ALA A 101 1 13 HELIX 7 7 PRO A 102 SER A 104 5 3 HELIX 8 8 GLN A 106 ALA A 129 1 24 HELIX 9 9 SER A 152 CYS A 161 1 10 HELIX 10 10 SER A 178 ARG A 185 1 8 HELIX 11 11 GLY A 195 ASP A 197 5 3 HELIX 12 12 GLN A 198 GLY A 207 1 10 HELIX 13 13 GLU A 208 LEU A 210 5 3 HELIX 14 14 THR A 218 GLU A 223 1 6 HELIX 15 15 ARG A 228 SER A 241 1 14 HELIX 16 16 SER B 5008 ALA B 5018 1 11 HELIX 17 17 PRO B 5032 ILE B 5038 5 7 HELIX 18 18 ASN B 5048 LEU B 5055 1 8 HELIX 19 19 ALA B 5068 LEU B 5078 1 11 HELIX 20 20 SER B 5089 ALA B 5101 1 13 HELIX 21 21 PRO B 5102 SER B 5104 5 3 HELIX 22 22 GLN B 5106 ALA B 5129 1 24 HELIX 23 23 SER B 5152 CYS B 5161 1 10 HELIX 24 24 SER B 5178 ARG B 5185 1 8 HELIX 25 25 GLY B 5195 ASP B 5197 5 3 HELIX 26 26 GLN B 5198 GLY B 5207 1 10 HELIX 27 27 THR B 5218 GLU B 5223 1 6 HELIX 28 28 ARG B 5228 SER B 5241 1 14 SHEET 1 A 3 VAL A 4 THR A 6 0 SHEET 2 A 3 LEU A 59 TRP A 63 1 O ILE A 61 N ILE A 5 SHEET 3 A 3 VAL A 82 VAL A 85 1 O VAL A 85 N ALA A 62 SHEET 1 B 2 VAL A 25 SER A 26 0 SHEET 2 B 2 GLN A 40 SER A 42 1 O VAL A 41 N VAL A 25 SHEET 1 C 4 GLY A 163 ASN A 165 0 SHEET 2 C 4 LYS A 134 LEU A 138 1 N VAL A 136 O GLU A 164 SHEET 3 C 4 ALA A 189 ILE A 192 1 O VAL A 191 N PHE A 137 SHEET 4 C 4 VAL A 214 PRO A 216 1 O ILE A 215 N ILE A 190 SHEET 1 D 3 VAL B5004 THR B5006 0 SHEET 2 D 3 LEU B5059 TRP B5063 1 O ILE B5061 N ILE B5005 SHEET 3 D 3 VAL B5082 VAL B5085 1 O VAL B5085 N ALA B5062 SHEET 1 E 3 VAL B5025 SER B5026 0 SHEET 2 E 3 GLN B5040 THR B5043 1 O VAL B5041 N VAL B5025 SHEET 3 E 3 GLY B5046 MSE B5047 -1 O GLY B5046 N THR B5043 SHEET 1 F 4 GLY B5163 ASN B5165 0 SHEET 2 F 4 LYS B5134 LEU B5138 1 N VAL B5136 O GLU B5164 SHEET 3 F 4 ALA B5189 ILE B5192 1 O VAL B5191 N PHE B5137 SHEET 4 F 4 VAL B5214 PRO B5216 1 O ILE B5215 N ILE B5190 SSBOND 1 CYS A 161 CYS A 237 1555 1555 2.04 SSBOND 2 CYS B 5161 CYS B 5237 1555 1555 2.38 LINK C GLY A 46 N MSE A 47 1555 1555 1.33 LINK C MSE A 47 N ASN A 48 1555 1555 1.33 LINK C VAL A 82 N MSE A 83 1555 1555 1.33 LINK C MSE A 83 N TRP A 84 1555 1555 1.33 LINK C GLY B5046 N MSE B5047 1555 1555 1.33 LINK C MSE B5047 N ASN B5048 1555 1555 1.33 LINK C VAL B5082 N MSE B5083 1555 1555 1.33 LINK C MSE B5083 N TRP B5084 1555 1555 1.33 CISPEP 1 TYR A 31 PRO A 32 0 -0.22 CISPEP 2 ASN A 143 PRO A 144 0 0.29 CISPEP 3 PRO A 144 PRO A 145 0 0.86 CISPEP 4 TYR B 5031 PRO B 5032 0 -0.19 CISPEP 5 ASN B 5143 PRO B 5144 0 -0.05 CISPEP 6 PRO B 5144 PRO B 5145 0 -0.41 SITE 1 AC1 33 PRO A 9 ALA A 10 TYR A 28 TRP A 44 SITE 2 AC1 33 TRP A 63 GLY A 65 GLY A 66 PHE A 146 SITE 3 AC1 33 TRP A 174 SER A 219 ASP A 220 GLU A 223 SITE 4 AC1 33 ARG A 224 HOH A7034 HOH A7035 HOH A7046 SITE 5 AC1 33 HOH A7048 HOH A7069 HOH A7115 HOH A7143 SITE 6 AC1 33 HOH A7167 HOH A7179 HOH A7187 HOH A7203 SITE 7 AC1 33 HOH A7225 HOH A7250 HOH A7325 HOH A7376 SITE 8 AC1 33 HOH A7431 HOH A7436 HOH A7497 HOH A7503 SITE 9 AC1 33 HOH A7540 SITE 1 AC2 19 PRO B5009 ALA B5010 SER B5027 TYR B5028 SITE 2 AC2 19 TRP B5044 TRP B5063 GLY B5065 GLY B5066 SITE 3 AC2 19 TRP B5174 SER B5219 ASP B5220 GLU B5223 SITE 4 AC2 19 ARG B5224 HOH B7010 HOH B7083 HOH B7109 SITE 5 AC2 19 HOH B7141 HOH B7475 HOH B7520 CRYST1 131.730 92.020 44.690 90.00 90.00 90.00 P 21 21 2 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 0.007591 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010867 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022376 0.00000