HEADER OXIDOREDUCTASE 21-NOV-25 9TCE TITLE XFEL STRUCTURE OF RIBONUCLEOTIDE REDUCTASE R2A Y122F MUTANT FROM E. TITLE 2 COLI,REDUCED FORM, HEXAGONAL P6122 COMPND MOL_ID: 1; COMPND 2 MOLECULE: RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE 1 SUBUNIT BETA; COMPND 3 CHAIN: A; 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 1 13-MAY-26 9TCE 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 DOI 10.1016/J.STR.2026.03.006 REMARK 2 REMARK 2 RESOLUTION. 2.70 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) : 2.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 22.78 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 96.6 REMARK 3 NUMBER OF REFLECTIONS : 14547 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.242 REMARK 3 R VALUE (WORKING SET) : 0.237 REMARK 3 FREE R VALUE : 0.281 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1455 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 22.7800 - 5.7900 0.97 1452 162 0.1850 0.2074 REMARK 3 2 5.7900 - 4.6100 0.98 1369 152 0.2082 0.2725 REMARK 3 3 4.6100 - 4.0300 0.93 1275 142 0.1945 0.2319 REMARK 3 4 4.0300 - 3.6600 0.89 1193 133 0.2414 0.3566 REMARK 3 5 3.6600 - 3.4000 0.90 1209 134 0.2755 0.3221 REMARK 3 6 3.4000 - 3.2000 0.99 1323 146 0.2616 0.2983 REMARK 3 7 3.2000 - 3.0400 1.00 1330 148 0.2962 0.3365 REMARK 3 8 3.0400 - 2.9100 1.00 1309 146 0.3274 0.3728 REMARK 3 9 2.9100 - 2.8000 1.00 1328 147 0.3283 0.3753 REMARK 3 10 2.8000 - 2.7000 1.00 1304 145 0.4682 0.5168 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) : 0.430 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 28.555 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 63.64 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 91.90 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 : 0.002 2880 REMARK 3 ANGLE : 0.491 3912 REMARK 3 CHIRALITY : 0.037 433 REMARK 3 PLANARITY : 0.004 503 REMARK 3 DIHEDRAL : 14.226 1073 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: (CHAIN 'A' AND RESID 1 THROUGH 341) REMARK 3 ORIGIN FOR THE GROUP (A): 32.7698 -44.9047 29.4407 REMARK 3 T TENSOR REMARK 3 T11: 0.6023 T22: 1.0808 REMARK 3 T33: 0.6069 T12: -0.3806 REMARK 3 T13: 0.0119 T23: 0.1351 REMARK 3 L TENSOR REMARK 3 L11: 1.9765 L22: 1.7539 REMARK 3 L33: 1.9045 L12: -1.1641 REMARK 3 L13: 0.9358 L23: -1.0452 REMARK 3 S TENSOR REMARK 3 S11: -0.0166 S12: -0.4832 S13: -0.3268 REMARK 3 S21: 0.0460 S22: 0.4547 S23: 0.3669 REMARK 3 S31: 0.5119 S32: -0.9722 S33: -0.1447 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 9TCE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 21-NOV-25. REMARK 100 THE DEPOSITION ID IS D_1292152388. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 12-JUL-21 REMARK 200 TEMPERATURE (KELVIN) : 297 REMARK 200 PH : NULL 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) : 1.303422 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 : 180630 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.700 REMARK 200 RESOLUTION RANGE LOW (A) : 22.780 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 96.6 REMARK 200 DATA REDUNDANCY : 983.6 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 18.8600 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.80 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 : 2.084 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 (%): 58.20 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.94 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 4M SODIUM FORMATE, BATCH MODE, REMARK 280 TEMPERATURE 297K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 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+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+5/6 REMARK 290 6555 X-Y,X,Z+1/6 REMARK 290 7555 Y,X,-Z+1/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+2/3 REMARK 290 10555 -Y,-X,-Z+5/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+1/6 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 67.46400 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 134.92800 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 101.19600 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 168.66000 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 33.73200 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 67.46400 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 134.92800 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 168.66000 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 101.19600 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 33.73200 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 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 46.75600 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 -80.98377 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 33.73200 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 502 LIES ON A SPECIAL POSITION. 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 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 OD1 ASP A 84 OE1 GLU A 115 2.03 REMARK 500 OE1 GLU A 204 O HOH A 501 2.18 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 PHE A 5 102.83 -160.97 REMARK 500 PRO A 16 -179.04 -68.50 REMARK 500 ASN A 24 -82.61 -105.40 REMARK 500 PRO A 97 29.64 -78.90 REMARK 500 ILE A 206 -59.46 -124.19 REMARK 500 SER A 295 -167.62 -106.70 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 54.7 REMARK 620 3 GLU A 115 OE1 53.0 102.2 REMARK 620 4 HIS A 118 ND1 136.4 100.9 111.6 REMARK 620 5 GLU A 238 OE2 113.5 103.3 128.1 106.8 REMARK 620 N 1 2 3 4 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 148.1 REMARK 620 3 GLU A 204 OE2 95.7 57.5 REMARK 620 4 GLU A 238 OE1 111.6 97.6 152.2 REMARK 620 5 HIS A 241 ND1 83.8 118.8 107.6 71.9 REMARK 620 6 HOH A 501 O 101.4 61.5 83.0 95.9 167.9 REMARK 620 N 1 2 3 4 5 DBREF 9TCE A 1 375 UNP P69924 RIR2_ECOLI 2 376 SEQADV 9TCE PHE A 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 HET FE2 A 401 1 HET FE2 A 402 1 HETNAM FE2 FE (II) ION FORMUL 2 FE2 2(FE 2+) FORMUL 4 HOH *4(H2 O) HELIX 1 AA1 TYR A 33 PHE A 46 1 14 HELIX 2 AA2 ARG A 49 VAL A 53 5 5 HELIX 3 AA3 VAL A 55 LEU A 65 1 11 HELIX 4 AA4 PRO A 66 LEU A 95 1 30 HELIX 5 AA5 LEU A 96 ILE A 99 5 4 HELIX 6 AA6 ILE A 101 VAL A 130 1 30 HELIX 7 AA7 PRO A 133 ASN A 143 1 11 HELIX 8 AA8 ASN A 143 LEU A 170 1 28 HELIX 9 AA9 SER A 185 ILE A 206 1 22 HELIX 10 AB1 ILE A 206 ARG A 221 1 16 HELIX 11 AB2 MET A 224 SER A 254 1 31 HELIX 12 AB3 GLU A 260 CYS A 268 1 9 HELIX 13 AB4 CYS A 268 PHE A 291 1 24 HELIX 14 AB5 ASN A 300 VAL A 319 1 20 HELIX 15 AB6 ILE A 332 TRP A 338 5 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 184 N GLY A 173 LINK OD1 ASP A 84 FE FE2 A 401 1555 1555 2.39 LINK OD2 ASP A 84 FE FE2 A 401 1555 1555 2.37 LINK OE1 GLU A 115 FE FE2 A 401 1555 1555 2.13 LINK OE2 GLU A 115 FE FE2 A 402 1555 1555 1.85 LINK ND1 HIS A 118 FE FE2 A 401 1555 1555 1.98 LINK OE1 GLU A 204 FE FE2 A 402 1555 1555 2.21 LINK OE2 GLU A 204 FE FE2 A 402 1555 1555 2.34 LINK OE2 GLU A 238 FE FE2 A 401 1555 1555 2.09 LINK OE1 GLU A 238 FE FE2 A 402 1555 1555 1.87 LINK ND1 HIS A 241 FE FE2 A 402 1555 1555 2.07 LINK FE FE2 A 402 O HOH A 501 1555 1555 2.06 CRYST1 93.512 93.512 202.392 90.00 90.00 120.00 P 61 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 0.010694 0.006174 0.000000 0.00000 SCALE2 0.000000 0.012348 0.000000 0.00000 SCALE3 0.000000 0.000000 0.004941 0.00000 CONECT 726 2814 CONECT 727 2814 CONECT 972 2814 CONECT 973 2815 CONECT 995 2814 CONECT 1689 2815 CONECT 1690 2815 CONECT 1976 2815 CONECT 1977 2814 CONECT 1997 2815 CONECT 2814 726 727 972 995 CONECT 2814 1977 CONECT 2815 973 1689 1690 1976 CONECT 2815 1997 2816 CONECT 2816 2815 MASTER 354 0 2 15 2 0 0 6 2799 1 15 29 END