HEADER OXIDOREDUCTASE 28-AUG-25 9SIH TITLE XFEL STRUCTURE OF RIBONUCLEOTIDE REDUCTASE R2A Y122F MUTANT FROM E. TITLE 2 COLI,REDUCED FORM COMPND MOL_ID: 1; COMPND 2 MOLECULE: RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE 1 SUBUNIT BETA; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: PROTEIN B2,PROTEIN R2,RIBONUCLEOTIDE REDUCTASE 1; COMPND 5 EC: 1.17.4.1; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: NRDB, FTSB, B2235, JW2229; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI 'BL21-GOLD(DE3)PLYSS AG'; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 866768 KEYWDS RIBONUCLEOTIDE REDUCTASE BETA SUBUNIT, R2A, DI-IRON BETA SUBUNIT, KEYWDS 2 REDUCED R2A, XFEL STRUCTURE, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR R.KUMAR,V.SRINIVAS,M.HOGBOM REVDAT 2 20-MAY-26 9SIH 1 JRNL REVDAT 1 13-MAY-26 9SIH 0 JRNL AUTH L.PACOSTE,R.KUMAR,V.SRINIVAS,H.MAKITA,P.S.SIMON,R.BANNERJEE, JRNL AUTH 2 N.M.MINNETIAN,A.BHOWMICK,D.W.PALEY,D.W.MITTAN-MOREAU, JRNL AUTH 3 K.CHATTERJEE,D.J.ROSENBERG,A.BATYUK,L.B.GEE,R.ALONSO-MORI, JRNL AUTH 4 N.K.SAUTER,J.YANO,V.K.YACHANDRA,J.JOHN,O.AURELIUS, JRNL AUTH 5 A.S.BREWSTER,J.F.KERN,B.BLOMBERG,H.LEBRETTE,H.XU,G.HOFER, JRNL AUTH 6 M.HOGBOM,X.ZOU JRNL TITL TRACKING THE REDOX REACTION OF THE IRON ENZYME JRNL TITL 2 RIBONUCLEOTIDE REDUCTASE USING CONTINUOUS SERIALED AND SFX. JRNL REF STRUCTURE 2026 JRNL REFN ISSN 0969-2126 JRNL PMID 42097140 JRNL DOI 10.1016/J.STR.2026.03.006 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.21.2_5419 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 : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 26.42 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.330 REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 92055 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.159 REMARK 3 R VALUE (WORKING SET) : 0.158 REMARK 3 FREE R VALUE : 0.191 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 2.170 REMARK 3 FREE R VALUE TEST SET COUNT : 2000 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 26.4200 - 4.0900 1.00 6759 153 0.1202 0.1398 REMARK 3 2 4.0900 - 3.2500 1.00 6550 146 0.1194 0.1464 REMARK 3 3 3.2500 - 2.8400 1.00 6480 144 0.1482 0.1993 REMARK 3 4 2.8400 - 2.5800 1.00 6456 149 0.1541 0.1730 REMARK 3 5 2.5800 - 2.4000 1.00 6422 137 0.1567 0.1818 REMARK 3 6 2.4000 - 2.2500 1.00 6410 145 0.1527 0.2108 REMARK 3 7 2.2500 - 2.1400 1.00 6430 147 0.1602 0.2025 REMARK 3 8 2.1400 - 2.0500 1.00 6374 136 0.1931 0.2279 REMARK 3 9 2.0500 - 1.9700 1.00 6372 141 0.2008 0.2406 REMARK 3 10 1.9700 - 1.9000 1.00 6348 144 0.2193 0.2806 REMARK 3 11 1.9000 - 1.8400 1.00 6406 141 0.2467 0.2818 REMARK 3 12 1.8400 - 1.7900 1.00 6376 133 0.2679 0.3133 REMARK 3 13 1.7900 - 1.7400 1.00 6327 147 0.3001 0.3241 REMARK 3 14 1.7400 - 1.7000 1.00 6345 137 0.3173 0.3421 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.236 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 20.714 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 19.87 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 29.23 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 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 : 0.017 5849 REMARK 3 ANGLE : 1.437 7960 REMARK 3 CHIRALITY : 0.087 880 REMARK 3 PLANARITY : 0.015 1027 REMARK 3 DIHEDRAL : 17.367 2185 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 9SIH COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 28-AUG-25. REMARK 100 THE DEPOSITION ID IS D_1292150484. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 26-FEB-25 REMARK 200 TEMPERATURE (KELVIN) : 297 REMARK 200 PH : 5.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : FREE ELECTRON LASER REMARK 200 BEAMLINE : MFX REMARK 200 X-RAY GENERATOR MODEL : SLAC LCLS BEAMLINE MFX REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.278240 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : RAYONIX MX340-HS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : CCTBX.XFEL REMARK 200 DATA SCALING SOFTWARE : CXI.MERGE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 92055 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 26.420 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 62.97 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 6.5100 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.74 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 : 0.945 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHENIX REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.50 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.39 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M BIS-TRIS PH 5.5, PEG 3350 25%, REMARK 280 BATCH MODE, TEMPERATURE 297K 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 37.09100 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 73.13250 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 38.22300 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 73.13250 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 37.09100 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 38.22300 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 6710 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 23860 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -81.0 KCAL/MOL 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 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 ASP A 342 REMARK 465 ASN A 343 REMARK 465 VAL A 344 REMARK 465 GLN A 345 REMARK 465 VAL A 346 REMARK 465 ALA A 347 REMARK 465 PRO A 348 REMARK 465 GLN A 349 REMARK 465 GLU A 350 REMARK 465 VAL A 351 REMARK 465 GLU A 352 REMARK 465 VAL A 353 REMARK 465 SER A 354 REMARK 465 SER A 355 REMARK 465 TYR A 356 REMARK 465 LEU A 357 REMARK 465 VAL A 358 REMARK 465 GLY A 359 REMARK 465 GLN A 360 REMARK 465 ILE A 361 REMARK 465 ASP A 362 REMARK 465 SER A 363 REMARK 465 GLU A 364 REMARK 465 VAL A 365 REMARK 465 ASP A 366 REMARK 465 THR A 367 REMARK 465 ASP A 368 REMARK 465 ASP A 369 REMARK 465 LEU A 370 REMARK 465 SER A 371 REMARK 465 ASN A 372 REMARK 465 PHE A 373 REMARK 465 GLN A 374 REMARK 465 LEU A 375 REMARK 465 SER B 341 REMARK 465 ASP B 342 REMARK 465 ASN B 343 REMARK 465 VAL B 344 REMARK 465 GLN B 345 REMARK 465 VAL B 346 REMARK 465 ALA B 347 REMARK 465 PRO B 348 REMARK 465 GLN B 349 REMARK 465 GLU B 350 REMARK 465 VAL B 351 REMARK 465 GLU B 352 REMARK 465 VAL B 353 REMARK 465 SER B 354 REMARK 465 SER B 355 REMARK 465 TYR B 356 REMARK 465 LEU B 357 REMARK 465 VAL B 358 REMARK 465 GLY B 359 REMARK 465 GLN B 360 REMARK 465 ILE B 361 REMARK 465 ASP B 362 REMARK 465 SER B 363 REMARK 465 GLU B 364 REMARK 465 VAL B 365 REMARK 465 ASP B 366 REMARK 465 THR B 367 REMARK 465 ASP B 368 REMARK 465 ASP B 369 REMARK 465 LEU B 370 REMARK 465 SER B 371 REMARK 465 ASN B 372 REMARK 465 PHE B 373 REMARK 465 GLN B 374 REMARK 465 LEU B 375 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 ILE B 297 CG1 CG2 CD1 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 OE1 GLU A 204 OE1 GLU A 238 1.67 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 CYS A 268 CB CYS A 268 SG -0.145 REMARK 500 CYS B 214 CB CYS B 214 SG -0.106 REMARK 500 CYS B 268 CB CYS B 268 SG -0.218 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 LEU A 275 CA - CB - CG ANGL. DEV. = 21.9 DEGREES REMARK 500 PHE B 208 O - C - N ANGL. DEV. = -11.5 DEGREES REMARK 500 LEU B 275 CA - CB - CG ANGL. DEV. = 16.4 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 ASN A 24 -77.02 -102.39 REMARK 500 ASN B 24 -79.36 -95.28 REMARK 500 ILE B 206 -34.59 -132.51 REMARK 500 PHE B 291 44.69 -106.23 REMARK 500 ILE B 297 -143.50 34.36 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 120 0.08 SIDE CHAIN REMARK 500 ARG A 207 0.08 SIDE CHAIN REMARK 500 ARG B 221 0.08 SIDE CHAIN 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 PHE B 208 -17.66 REMARK 500 PHE B 208 15.66 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 FE2 A 401 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 84 OD1 REMARK 620 2 ASP A 84 OD2 51.4 REMARK 620 3 GLU A 115 OE1 77.9 108.5 REMARK 620 4 HIS A 118 ND1 143.6 100.2 94.2 REMARK 620 5 GLU A 238 OE2 108.0 109.9 134.0 102.9 REMARK 620 6 GLU A 238 OE2 102.1 141.6 88.2 113.2 45.8 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE2 A 402 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 115 OE2 REMARK 620 2 GLU A 204 OE1 136.7 REMARK 620 3 GLU A 204 OE2 81.3 56.4 REMARK 620 4 GLU A 238 OE1 121.3 100.0 156.2 REMARK 620 5 GLU A 238 OE1 171.3 46.5 102.9 53.7 REMARK 620 6 GLU A 238 OE2 108.1 104.9 149.3 23.9 64.4 REMARK 620 7 HIS A 241 ND1 90.7 106.5 103.4 85.0 95.7 105.5 REMARK 620 8 HOH A 501 O 84.0 87.1 90.1 85.5 88.3 62.9 164.6 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE2 B 401 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP B 84 OD1 REMARK 620 2 ASP B 84 OD2 52.1 REMARK 620 3 GLU B 115 OE1 78.5 107.4 REMARK 620 4 HIS B 118 ND1 144.7 99.4 94.1 REMARK 620 5 GLU B 238 OE2 109.9 112.8 134.1 100.0 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE2 B 402 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 115 OE2 REMARK 620 2 GLU B 204 OE1 142.9 REMARK 620 3 GLU B 204 OE2 86.0 58.2 REMARK 620 4 GLU B 238 OE1 120.1 95.0 153.2 REMARK 620 5 HIS B 241 ND1 90.8 104.9 102.1 85.0 REMARK 620 6 HOH B 589 O 83.3 86.8 89.6 87.5 166.5 REMARK 620 N 1 2 3 4 5 DBREF 9SIH A 1 375 UNP P69924 RIR2_ECOLI 2 376 DBREF 9SIH B 1 375 UNP P69924 RIR2_ECOLI 2 376 SEQADV 9SIH PHE A 122 UNP P69924 TYR 123 ENGINEERED MUTATION SEQADV 9SIH PHE B 122 UNP P69924 TYR 123 ENGINEERED MUTATION SEQRES 1 A 375 ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU SEQRES 2 A 375 LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA SEQRES 3 A 375 ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU SEQRES 4 A 375 ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU SEQRES 5 A 375 VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU SEQRES 6 A 375 PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS SEQRES 7 A 375 TYR GLN THR LEU LEU ASP SER ILE GLN GLY ARG SER PRO SEQRES 8 A 375 ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU SEQRES 9 A 375 GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE SEQRES 10 A 375 HIS SER ARG SER PHE THR HIS ILE ILE ARG ASN ILE VAL SEQRES 11 A 375 ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN SEQRES 12 A 375 GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR SEQRES 13 A 375 TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU SEQRES 14 A 375 LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL SEQRES 15 A 375 THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU SEQRES 16 A 375 CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE SEQRES 17 A 375 TYR VAL SER PHE ALA CYS SER PHE ALA PHE ALA GLU ARG SEQRES 18 A 375 GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE SEQRES 19 A 375 ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS SEQRES 20 A 375 MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU SEQRES 21 A 375 MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR SEQRES 22 A 375 ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP SEQRES 23 A 375 ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU SEQRES 24 A 375 ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR SEQRES 25 A 375 ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE SEQRES 26 A 375 GLN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP SEQRES 27 A 375 LEU VAL SER ASP ASN VAL GLN VAL ALA PRO GLN GLU VAL SEQRES 28 A 375 GLU VAL SER SER TYR LEU VAL GLY GLN ILE ASP SER GLU SEQRES 29 A 375 VAL ASP THR ASP ASP LEU SER ASN PHE GLN LEU SEQRES 1 B 375 ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU SEQRES 2 B 375 LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA SEQRES 3 B 375 ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU SEQRES 4 B 375 ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU SEQRES 5 B 375 VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU SEQRES 6 B 375 PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS SEQRES 7 B 375 TYR GLN THR LEU LEU ASP SER ILE GLN GLY ARG SER PRO SEQRES 8 B 375 ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU SEQRES 9 B 375 GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE SEQRES 10 B 375 HIS SER ARG SER PHE THR HIS ILE ILE ARG ASN ILE VAL SEQRES 11 B 375 ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN SEQRES 12 B 375 GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR SEQRES 13 B 375 TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU SEQRES 14 B 375 LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL SEQRES 15 B 375 THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU SEQRES 16 B 375 CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE SEQRES 17 B 375 TYR VAL SER PHE ALA CYS SER PHE ALA PHE ALA GLU ARG SEQRES 18 B 375 GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE SEQRES 19 B 375 ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS SEQRES 20 B 375 MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU SEQRES 21 B 375 MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR SEQRES 22 B 375 ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP SEQRES 23 B 375 ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU SEQRES 24 B 375 ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR SEQRES 25 B 375 ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE SEQRES 26 B 375 GLN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP SEQRES 27 B 375 LEU VAL SER ASP ASN VAL GLN VAL ALA PRO GLN GLU VAL SEQRES 28 B 375 GLU VAL SER SER TYR LEU VAL GLY GLN ILE ASP SER GLU SEQRES 29 B 375 VAL ASP THR ASP ASP LEU SER ASN PHE GLN LEU HET FE2 A 401 1 HET FE2 A 402 1 HET FE2 B 401 1 HET FE2 B 402 1 HETNAM FE2 FE (II) ION FORMUL 3 FE2 4(FE 2+) FORMUL 7 HOH *362(H2 O) HELIX 1 AA1 ASP A 11 GLU A 15 5 5 HELIX 2 AA2 TYR A 33 PHE A 46 1 14 HELIX 3 AA3 ARG A 49 VAL A 53 5 5 HELIX 4 AA4 VAL A 55 ALA A 64 1 10 HELIX 5 AA5 PRO A 66 LEU A 95 1 30 HELIX 6 AA6 LEU A 96 ILE A 99 5 4 HELIX 7 AA7 ILE A 101 VAL A 130 1 30 HELIX 8 AA8 ASP A 132 ASP A 138 1 7 HELIX 9 AA9 ASN A 143 GLY A 171 1 29 HELIX 10 AB1 SER A 185 ILE A 206 1 22 HELIX 11 AB2 PHE A 208 ARG A 221 1 14 HELIX 12 AB3 MET A 224 GLY A 255 1 32 HELIX 13 AB4 ASP A 258 CYS A 268 1 11 HELIX 14 AB5 CYS A 268 PHE A 291 1 24 HELIX 15 AB6 ASN A 300 VAL A 319 1 20 HELIX 16 AB7 ILE A 332 TRP A 338 5 7 HELIX 17 AB8 ASP B 11 GLU B 15 5 5 HELIX 18 AB9 TYR B 33 PHE B 46 1 14 HELIX 19 AC1 ARG B 49 VAL B 53 5 5 HELIX 20 AC2 VAL B 55 LEU B 65 1 11 HELIX 21 AC3 PRO B 66 LEU B 95 1 30 HELIX 22 AC4 LEU B 96 ILE B 99 5 4 HELIX 23 AC5 ILE B 101 VAL B 130 1 30 HELIX 24 AC6 ASP B 132 ASP B 138 1 7 HELIX 25 AC7 GLN B 145 GLY B 171 1 27 HELIX 26 AC8 SER B 185 ILE B 206 1 22 HELIX 27 AC9 PHE B 208 ARG B 221 1 14 HELIX 28 AD1 MET B 224 SER B 254 1 31 HELIX 29 AD2 ASP B 258 CYS B 268 1 11 HELIX 30 AD3 CYS B 268 PHE B 291 1 24 HELIX 31 AD4 ASN B 300 VAL B 319 1 20 HELIX 32 AD5 TRP B 334 VAL B 340 1 7 SHEET 1 AA1 2 GLY A 173 VAL A 177 0 SHEET 2 AA1 2 LYS A 180 VAL A 184 -1 O VAL A 182 N HIS A 175 SHEET 1 AA2 2 GLY B 173 VAL B 177 0 SHEET 2 AA2 2 LYS B 180 VAL B 184 -1 O VAL B 182 N HIS B 175 LINK OD1 ASP A 84 FE FE2 A 401 1555 1555 2.76 LINK OD2 ASP A 84 FE FE2 A 401 1555 1555 1.99 LINK OE1 GLU A 115 FE FE2 A 401 1555 1555 2.08 LINK OE2 GLU A 115 FE FE2 A 402 1555 1555 2.05 LINK ND1 HIS A 118 FE FE2 A 401 1555 1555 2.02 LINK OE1 GLU A 204 FE FE2 A 402 1555 1555 2.20 LINK OE2 GLU A 204 FE FE2 A 402 1555 1555 2.31 LINK OE2AGLU A 238 FE FE2 A 401 1555 1555 2.03 LINK OE2BGLU A 238 FE FE2 A 401 1555 1555 2.26 LINK OE1AGLU A 238 FE FE2 A 402 1555 1555 1.99 LINK OE1BGLU A 238 FE FE2 A 402 1555 1555 2.01 LINK OE2BGLU A 238 FE FE2 A 402 1555 1555 2.08 LINK ND1 HIS A 241 FE FE2 A 402 1555 1555 2.22 LINK FE FE2 A 402 O HOH A 501 1555 1555 2.29 LINK OD1 ASP B 84 FE FE2 B 401 1555 1555 2.79 LINK OD2 ASP B 84 FE FE2 B 401 1555 1555 1.97 LINK OE1 GLU B 115 FE FE2 B 401 1555 1555 2.02 LINK OE2 GLU B 115 FE FE2 B 402 1555 1555 2.05 LINK ND1 HIS B 118 FE FE2 B 401 1555 1555 2.08 LINK OE1 GLU B 204 FE FE2 B 402 1555 1555 2.16 LINK OE2 GLU B 204 FE FE2 B 402 1555 1555 2.27 LINK OE2 GLU B 238 FE FE2 B 401 1555 1555 1.94 LINK OE1 GLU B 238 FE FE2 B 402 1555 1555 2.04 LINK ND1 HIS B 241 FE FE2 B 402 1555 1555 2.22 LINK FE FE2 B 402 O HOH B 589 1555 1555 2.26 CRYST1 74.182 76.446 146.265 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 0.013480 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013081 0.000000 0.00000 SCALE3 0.000000 0.000000 0.006837 0.00000 CONECT 736 5705 CONECT 737 5705 CONECT 989 5705 CONECT 990 5706 CONECT 1012 5705 CONECT 1717 5706 CONECT 1718 5706 CONECT 2010 5706 CONECT 2011 5706 CONECT 2012 5705 CONECT 2013 5705 5706 CONECT 2033 5706 CONECT 3572 5707 CONECT 3573 5707 CONECT 3831 5707 CONECT 3832 5708 CONECT 3854 5707 CONECT 4561 5708 CONECT 4562 5708 CONECT 4867 5708 CONECT 4868 5707 CONECT 4888 5708 CONECT 5705 736 737 989 1012 CONECT 5705 2012 2013 CONECT 5706 990 1717 1718 2010 CONECT 5706 2011 2013 2033 5709 CONECT 5707 3572 3573 3831 3854 CONECT 5707 4868 CONECT 5708 3832 4561 4562 4867 CONECT 5708 4888 5969 CONECT 5709 5706 CONECT 5969 5708 MASTER 444 0 4 32 4 0 0 6 5943 2 32 58 END