1K2R - Header Asymmetric Unit

HEADER OXIDOREDUCTASE 28-SEP-01 1K2R

TITLE STRUCTURE OF RAT BRAIN NNOS HEME DOMAIN COMPLEXED WITH NG- TITLE 2 NITRO-L-ARGININE

COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITRIC-OXIDE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 FRAGMENT: HEME-CONTAINING OXYGENASE DOMAIN; COMPND 5 EC: 1.14.13.39; COMPND 6 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: NORWAY RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 GENE: BRAIN; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562

KEYWDS NITRIC OXIDE SYNTHASE, HEME-THIOLATE PROTEIN, OXIDOREDUCTASE

EXPDTA X-RAY DIFFRACTION

AUTHOR H.LI,P.MARTASEK,B.S.S.MASTERS,T.L.POULOS,C.S.RAMAN

REVDAT 2 24-FEB-09 1K2R 1 VERSN REVDAT 1 04-MAR-03 1K2R 0

JRNL AUTH H.LI,P.MARTASEK,B.S.S.MASTERS,T.L.POULOS,C.S.RAMAN JRNL TITL STRUCTURE OF RAT BRAIN NNOS HEME DOMAIN JRNL REF TO BE PUBLISHED JRNL REFN

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.S.RAMAN,H.LI,P.MARTASEK,V.KRAL,B.S.S.MASTERS, REMARK 1 AUTH 2 T.L.POULOS REMARK 1 TITL CRYSTAL STRUCTURE OF CONSTITUTIVE ENDOTHELIAL REMARK 1 TITL 2 NITRIC OXIDE SYNTHASE: A PARADIGM FOR PTERIN REMARK 1 TITL 3 FUNCTION INVOLVING A NOVEL METAL CENTER REMARK 1 REF CELL(CAMBRIDGE,MASS.) V. 95 939 1998 REMARK 1 REFN ISSN 0092-8674 REMARK 1 DOI 10.1016/S0092-8674(00)81718-3

REMARK 2 REMARK 2 RESOLUTION. 2.15 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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) : 2.15 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 2942397.670 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.3 REMARK 3 NUMBER OF REFLECTIONS : 51339 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) : 0.228 REMARK 3 FREE R VALUE : 0.270 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 2594 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.15 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.23 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 97.40 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4736 REMARK 3 BIN R VALUE (WORKING SET) : 0.3870 REMARK 3 BIN FREE R VALUE : 0.4100 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 261 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.025 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 6654 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 159 REMARK 3 SOLVENT ATOMS : 393 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 29.30 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 42.00 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 18.26000 REMARK 3 B22 (A**2) : 0.51000 REMARK 3 B33 (A**2) : -18.77000 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) : 0.30 REMARK 3 ESD FROM SIGMAA (A) : 0.47 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.37 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.53 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.30 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.40 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.99 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 : FLAT MODEL REMARK 3 KSOL : 0.36 REMARK 3 BSOL : 54.80 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : HETERO.PAR REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : HETERO.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1K2R COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-OCT-01. REMARK 100 THE RCSB ID CODE IS RCSB014487.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-JUN-00 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.08 REMARK 200 MONOCHROMATOR : YES REMARK 200 OPTICS : 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 : 51470 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.150 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 200 DATA REDUNDANCY : 3.100 REMARK 200 R MERGE (I) : 0.09500 REMARK 200 R SYM (I) : 0.09500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 7.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.15 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.20 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.2 REMARK 200 DATA REDUNDANCY IN SHELL : 2.60 REMARK 200 R MERGE FOR SHELL (I) : 0.67700 REMARK 200 R SYM FOR SHELL (I) : 0.67700 REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.16 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.42 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, MES, AMMONIUM ACETATE, PH REMARK 280 6.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 280K

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 25.82500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 82.37000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 55.24500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 82.37000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.82500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 55.24500 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: 10780 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 33180 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -77.0 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 SER A 339 REMARK 465 GLN A 340 REMARK 465 HIS A 341 REMARK 465 THR A 342 REMARK 465 ARG A 343 REMARK 465 LYS A 344 REMARK 465 PRO A 345 REMARK 465 GLU A 346 REMARK 465 ASP A 347 REMARK 465 VAL A 348 REMARK 465 ARG A 349 REMARK 465 LYS A 717 REMARK 465 SER B 339 REMARK 465 GLN B 340 REMARK 465 HIS B 341 REMARK 465 THR B 342 REMARK 465 ARG B 343 REMARK 465 LYS B 344 REMARK 465 PRO B 345 REMARK 465 GLU B 346 REMARK 465 ASP B 347

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 CYS A 326 CA - CB - SG ANGL. DEV. = 11.5 DEGREES REMARK 500 CYS B 326 CA - CB - SG ANGL. DEV. = 8.4 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 ASP A 309 -6.25 62.89 REMARK 500 THR A 321 -85.04 -95.47 REMARK 500 LEU A 322 177.72 -57.94 REMARK 500 ARG A 371 30.06 -143.64 REMARK 500 SER A 374 170.18 -47.91 REMARK 500 SER A 390 -64.17 -90.89 REMARK 500 THR A 393 -176.61 -175.39 REMARK 500 LYS A 423 41.33 -91.69 REMARK 500 THR A 466 -75.49 -118.78 REMARK 500 ASP A 489 -39.51 -38.66 REMARK 500 LYS A 550 -15.60 -147.43 REMARK 500 CYS A 582 65.53 -151.10 REMARK 500 ARG A 603 -125.08 -108.01 REMARK 500 ASN A 605 61.70 28.90 REMARK 500 ASP A 615 73.59 48.50 REMARK 500 CYS A 672 103.02 -161.15 REMARK 500 ARG B 371 29.43 -148.44 REMARK 500 SER B 392 -21.01 76.91 REMARK 500 THR B 393 -151.63 -130.00 REMARK 500 TYR B 394 147.06 -178.61 REMARK 500 THR B 466 -83.96 -121.16 REMARK 500 CYS B 582 51.75 -148.81 REMARK 500 VAL B 595 -61.75 -100.54 REMARK 500 ARG B 603 -134.71 -121.87 REMARK 500 ASN B 605 71.80 45.60 REMARK 500 SER B 622 -4.36 -56.46 REMARK 500 CYS B 672 97.26 -164.87 REMARK 500 SER B 684 28.71 49.94 REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH B3006 DISTANCE = 5.77 ANGSTROMS

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 ZN B 900 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 331 SG REMARK 620 2 CYS B 326 SG 112.6 REMARK 620 3 CYS A 326 SG 105.6 123.8 REMARK 620 4 CYS A 331 SG 107.1 95.1 111.3 REMARK 620 N 1 2 3

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 1860 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 2860 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 900 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 750 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B A 1760 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NRG A 1775 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 750 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B B 2760 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NRG B 2775

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 8NSE RELATED DB: PDB REMARK 900 BOVINE ENOS HEME DOMAIN COMPLEXED WITH NG-NITRO-L-ARGININE

DBREF 1K2R A 299 717 UNP P29476 NOS1_RAT 299 717 DBREF 1K2R B 299 717 UNP P29476 NOS1_RAT 299 717

SEQRES 1 A 419 ARG PHE LEU LYS VAL LYS ASN TRP GLU THR ASP VAL VAL SEQRES 2 A 419 LEU THR ASP THR LEU HIS LEU LYS SER THR LEU GLU THR SEQRES 3 A 419 GLY CYS THR GLU HIS ILE CYS MET GLY SER ILE MET LEU SEQRES 4 A 419 PRO SER GLN HIS THR ARG LYS PRO GLU ASP VAL ARG THR SEQRES 5 A 419 LYS ASP GLN LEU PHE PRO LEU ALA LYS GLU PHE LEU ASP SEQRES 6 A 419 GLN TYR TYR SER SER ILE LYS ARG PHE GLY SER LYS ALA SEQRES 7 A 419 HIS MET ASP ARG LEU GLU GLU VAL ASN LYS GLU ILE GLU SEQRES 8 A 419 SER THR SER THR TYR GLN LEU LYS ASP THR GLU LEU ILE SEQRES 9 A 419 TYR GLY ALA LYS HIS ALA TRP ARG ASN ALA SER ARG CYS SEQRES 10 A 419 VAL GLY ARG ILE GLN TRP SER LYS LEU GLN VAL PHE ASP SEQRES 11 A 419 ALA ARG ASP CYS THR THR ALA HIS GLY MET PHE ASN TYR SEQRES 12 A 419 ILE CYS ASN HIS VAL LYS TYR ALA THR ASN LYS GLY ASN SEQRES 13 A 419 LEU ARG SER ALA ILE THR ILE PHE PRO GLN ARG THR ASP SEQRES 14 A 419 GLY LYS HIS ASP PHE ARG VAL TRP ASN SER GLN LEU ILE SEQRES 15 A 419 ARG TYR ALA GLY TYR LYS GLN PRO ASP GLY SER THR LEU SEQRES 16 A 419 GLY ASP PRO ALA ASN VAL GLN PHE THR GLU ILE CYS ILE SEQRES 17 A 419 GLN GLN GLY TRP LYS ALA PRO ARG GLY ARG PHE ASP VAL SEQRES 18 A 419 LEU PRO LEU LEU LEU GLN ALA ASN GLY ASN ASP PRO GLU SEQRES 19 A 419 LEU PHE GLN ILE PRO PRO GLU LEU VAL LEU GLU VAL PRO SEQRES 20 A 419 ILE ARG HIS PRO LYS PHE ASP TRP PHE LYS ASP LEU GLY SEQRES 21 A 419 LEU LYS TRP TYR GLY LEU PRO ALA VAL SER ASN MET LEU SEQRES 22 A 419 LEU GLU ILE GLY GLY LEU GLU PHE SER ALA CYS PRO PHE SEQRES 23 A 419 SER GLY TRP TYR MET GLY THR GLU ILE GLY VAL ARG ASP SEQRES 24 A 419 TYR CYS ASP ASN SER ARG TYR ASN ILE LEU GLU GLU VAL SEQRES 25 A 419 ALA LYS LYS MET ASP LEU ASP MET ARG LYS THR SER SER SEQRES 26 A 419 LEU TRP LYS ASP GLN ALA LEU VAL GLU ILE ASN ILE ALA SEQRES 27 A 419 VAL LEU TYR SER PHE GLN SER ASP LYS VAL THR ILE VAL SEQRES 28 A 419 ASP HIS HIS SER ALA THR GLU SER PHE ILE LYS HIS MET SEQRES 29 A 419 GLU ASN GLU TYR ARG CYS ARG GLY GLY CYS PRO ALA ASP SEQRES 30 A 419 TRP VAL TRP ILE VAL PRO PRO MET SER GLY SER ILE THR SEQRES 31 A 419 PRO VAL PHE HIS GLN GLU MET LEU ASN TYR ARG LEU THR SEQRES 32 A 419 PRO SER PHE GLU TYR GLN PRO ASP PRO TRP ASN THR HIS SEQRES 33 A 419 VAL TRP LYS SEQRES 1 B 419 ARG PHE LEU LYS VAL LYS ASN TRP GLU THR ASP VAL VAL SEQRES 2 B 419 LEU THR ASP THR LEU HIS LEU LYS SER THR LEU GLU THR SEQRES 3 B 419 GLY CYS THR GLU HIS ILE CYS MET GLY SER ILE MET LEU SEQRES 4 B 419 PRO SER GLN HIS THR ARG LYS PRO GLU ASP VAL ARG THR SEQRES 5 B 419 LYS ASP GLN LEU PHE PRO LEU ALA LYS GLU PHE LEU ASP SEQRES 6 B 419 GLN TYR TYR SER SER ILE LYS ARG PHE GLY SER LYS ALA SEQRES 7 B 419 HIS MET ASP ARG LEU GLU GLU VAL ASN LYS GLU ILE GLU SEQRES 8 B 419 SER THR SER THR TYR GLN LEU LYS ASP THR GLU LEU ILE SEQRES 9 B 419 TYR GLY ALA LYS HIS ALA TRP ARG ASN ALA SER ARG CYS SEQRES 10 B 419 VAL GLY ARG ILE GLN TRP SER LYS LEU GLN VAL PHE ASP SEQRES 11 B 419 ALA ARG ASP CYS THR THR ALA HIS GLY MET PHE ASN TYR SEQRES 12 B 419 ILE CYS ASN HIS VAL LYS TYR ALA THR ASN LYS GLY ASN SEQRES 13 B 419 LEU ARG SER ALA ILE THR ILE PHE PRO GLN ARG THR ASP SEQRES 14 B 419 GLY LYS HIS ASP PHE ARG VAL TRP ASN SER GLN LEU ILE SEQRES 15 B 419 ARG TYR ALA GLY TYR LYS GLN PRO ASP GLY SER THR LEU SEQRES 16 B 419 GLY ASP PRO ALA ASN VAL GLN PHE THR GLU ILE CYS ILE SEQRES 17 B 419 GLN GLN GLY TRP LYS ALA PRO ARG GLY ARG PHE ASP VAL SEQRES 18 B 419 LEU PRO LEU LEU LEU GLN ALA ASN GLY ASN ASP PRO GLU SEQRES 19 B 419 LEU PHE GLN ILE PRO PRO GLU LEU VAL LEU GLU VAL PRO SEQRES 20 B 419 ILE ARG HIS PRO LYS PHE ASP TRP PHE LYS ASP LEU GLY SEQRES 21 B 419 LEU LYS TRP TYR GLY LEU PRO ALA VAL SER ASN MET LEU SEQRES 22 B 419 LEU GLU ILE GLY GLY LEU GLU PHE SER ALA CYS PRO PHE SEQRES 23 B 419 SER GLY TRP TYR MET GLY THR GLU ILE GLY VAL ARG ASP SEQRES 24 B 419 TYR CYS ASP ASN SER ARG TYR ASN ILE LEU GLU GLU VAL SEQRES 25 B 419 ALA LYS LYS MET ASP LEU ASP MET ARG LYS THR SER SER SEQRES 26 B 419 LEU TRP LYS ASP GLN ALA LEU VAL GLU ILE ASN ILE ALA SEQRES 27 B 419 VAL LEU TYR SER PHE GLN SER ASP LYS VAL THR ILE VAL SEQRES 28 B 419 ASP HIS HIS SER ALA THR GLU SER PHE ILE LYS HIS MET SEQRES 29 B 419 GLU ASN GLU TYR ARG CYS ARG GLY GLY CYS PRO ALA ASP SEQRES 30 B 419 TRP VAL TRP ILE VAL PRO PRO MET SER GLY SER ILE THR SEQRES 31 B 419 PRO VAL PHE HIS GLN GLU MET LEU ASN TYR ARG LEU THR SEQRES 32 B 419 PRO SER PHE GLU TYR GLN PRO ASP PRO TRP ASN THR HIS SEQRES 33 B 419 VAL TRP LYS

HET ACT A1860 4 HET ACT B2860 4 HET ZN B 900 1 HET HEM A 750 43 HET H4B A1760 17 HET NRG A1775 15 HET HEM B 750 43 HET H4B B2760 17 HET NRG B2775 15

HETNAM ACT ACETATE ION HETNAM ZN ZINC ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM H4B 5,6,7,8-TETRAHYDROBIOPTERIN HETNAM NRG N-OMEGA-NITRO-L-ARGININE

HETSYN HEM HEME HETSYN NRG NNA

FORMUL 3 ACT 2(C2 H3 O2 1-) FORMUL 5 ZN ZN 2+ FORMUL 6 HEM 2(C34 H32 FE N4 O4) FORMUL 7 H4B 2(C9 H15 N5 O3) FORMUL 8 NRG 2(C6 H13 N5 O4) FORMUL 12 HOH *393(H2 O)

HELIX 1 1 THR A 315 SER A 320 5 6 HELIX 2 2 THR A 350 ILE A 369 1 20 HELIX 3 3 SER A 374 SER A 392 1 19 HELIX 4 4 LYS A 397 ASN A 411 1 15 HELIX 5 5 GLY A 417 LEU A 424 5 8 HELIX 6 6 THR A 434 ASN A 451 1 18 HELIX 7 7 LYS A 452 ASN A 454 5 3 HELIX 8 8 ASN A 498 GLY A 509 1 12 HELIX 9 9 PRO A 537 VAL A 541 5 5 HELIX 10 10 TRP A 553 GLY A 558 5 6 HELIX 11 11 MET A 589 VAL A 595 1 7 HELIX 12 12 VAL A 595 ASP A 600 1 6 HELIX 13 13 ILE A 606 LYS A 613 1 8 HELIX 14 14 LYS A 620 SER A 623 5 4 HELIX 15 15 LEU A 624 ASP A 644 1 21 HELIX 16 16 ASP A 650 GLY A 670 1 21 HELIX 17 17 ASP A 675 VAL A 680 1 6 HELIX 18 18 SER A 684 GLN A 693 5 10 HELIX 19 19 ASP A 709 THR A 713 5 5 HELIX 20 20 THR B 315 SER B 320 5 6 HELIX 21 21 THR B 350 ILE B 369 1 20 HELIX 22 22 SER B 374 SER B 392 1 19 HELIX 23 23 LYS B 397 ALA B 412 1 16 HELIX 24 24 GLY B 417 TRP B 421 5 5 HELIX 25 25 THR B 434 ASN B 451 1 18 HELIX 26 26 LYS B 452 ASN B 454 5 3 HELIX 27 27 ASN B 498 GLN B 508 1 11 HELIX 28 28 PRO B 537 VAL B 541 5 5 HELIX 29 29 TRP B 553 GLY B 558 5 6 HELIX 30 30 MET B 589 VAL B 595 1 7 HELIX 31 31 VAL B 595 ASP B 600 1 6 HELIX 32 32 ILE B 606 ASP B 615 1 10 HELIX 33 33 LYS B 620 SER B 623 5 4 HELIX 34 34 LEU B 624 ASP B 644 1 21 HELIX 35 35 ASP B 650 GLY B 670 1 21 HELIX 36 36 ASP B 675 VAL B 680 1 6 HELIX 37 37 SER B 684 GLN B 693 5 10 HELIX 38 38 ASP B 709 THR B 713 5 5

SHEET 1 A 2 LEU A 301 LYS A 304 0 SHEET 2 A 2 VAL A 311 ASP A 314 -1 O ASP A 314 N LEU A 301 SHEET 1 B 3 GLN A 425 ASP A 428 0 SHEET 2 B 3 ALA A 458 ILE A 461 1 O ILE A 459 N PHE A 427 SHEET 3 B 3 PHE A 584 SER A 585 -1 O SER A 585 N ALA A 458 SHEET 1 C 3 ARG A 473 VAL A 474 0 SHEET 2 C 3 LEU A 522 GLN A 525 -1 O GLN A 525 N ARG A 473 SHEET 3 C 3 GLU A 532 PHE A 534 -1 O PHE A 534 N LEU A 522 SHEET 1 D 2 GLY A 484 LYS A 486 0 SHEET 2 D 2 THR A 492 GLY A 494 -1 O LEU A 493 N TYR A 485 SHEET 1 E 2 GLU A 543 PRO A 545 0 SHEET 2 E 2 LYS A 560 TYR A 562 -1 O TRP A 561 N VAL A 544 SHEET 1 F 3 LEU A 577 PHE A 579 0 SHEET 2 F 3 LEU A 571 ILE A 574 -1 N LEU A 572 O PHE A 579 SHEET 3 F 3 SER A 703 GLU A 705 -1 O GLU A 705 N LEU A 571 SHEET 1 G 2 LEU B 301 LYS B 304 0 SHEET 2 G 2 VAL B 311 ASP B 314 -1 O ASP B 314 N LEU B 301 SHEET 1 H 3 GLN B 425 ASP B 428 0 SHEET 2 H 3 ALA B 458 ILE B 461 1 O ILE B 459 N PHE B 427 SHEET 3 H 3 PHE B 584 SER B 585 -1 O SER B 585 N ALA B 458 SHEET 1 I 3 ARG B 473 VAL B 474 0 SHEET 2 I 3 LEU B 522 GLN B 525 -1 O GLN B 525 N ARG B 473 SHEET 3 I 3 GLU B 532 PHE B 534 -1 O PHE B 534 N LEU B 522 SHEET 1 J 2 GLY B 484 LYS B 486 0 SHEET 2 J 2 THR B 492 GLY B 494 -1 O LEU B 493 N TYR B 485 SHEET 1 K 2 GLU B 543 PRO B 545 0 SHEET 2 K 2 LYS B 560 TYR B 562 -1 O TRP B 561 N VAL B 544 SHEET 1 L 3 LEU B 577 PHE B 579 0 SHEET 2 L 3 LEU B 571 ILE B 574 -1 N LEU B 572 O PHE B 579 SHEET 3 L 3 SER B 703 GLU B 705 -1 O GLU B 705 N LEU B 571

LINK FE HEM A 750 SG CYS A 415 1555 1555 2.22 LINK FE HEM B 750 SG CYS B 415 1555 1555 2.22 LINK ZN ZN B 900 SG CYS B 331 1555 1555 2.29 LINK ZN ZN B 900 SG CYS B 326 1555 1555 2.31 LINK ZN ZN B 900 SG CYS A 326 1555 1555 2.28 LINK ZN ZN B 900 SG CYS A 331 1555 1555 2.28

CISPEP 1 THR A 701 PRO A 702 0 -0.11 CISPEP 2 THR B 701 PRO B 702 0 -0.09

SITE 1 AC1 3 TRP A 587 VAL A 649 HEM A 750 SITE 1 AC2 4 GLN B 420 TRP B 587 HOH B2913 HOH B2955 SITE 1 AC3 4 CYS A 326 CYS A 331 CYS B 326 CYS B 331 SITE 1 AC4 19 TRP A 409 CYS A 415 SER A 457 MET A 570 SITE 2 AC4 19 PHE A 584 SER A 585 GLY A 586 TRP A 587 SITE 3 AC4 19 GLU A 592 TRP A 678 TYR A 706 H4B A1760 SITE 4 AC4 19 NRG A1775 ACT A1860 HOH A1863 HOH A1866 SITE 5 AC4 19 HOH A1873 HOH A1880 HOH A1930 SITE 1 AC5 15 SER A 334 MET A 336 ARG A 596 VAL A 677 SITE 2 AC5 15 TRP A 678 HEM A 750 HOH A1863 HOH A1865 SITE 3 AC5 15 HOH A1927 HOH A1948 TRP B 676 PHE B 691 SITE 4 AC5 15 HIS B 692 GLN B 693 GLU B 694 SITE 1 AC6 14 GLN A 478 TYR A 562 PRO A 565 VAL A 567 SITE 2 AC6 14 SER A 585 GLY A 586 TRP A 587 TYR A 588 SITE 3 AC6 14 GLU A 592 ASP A 597 HEM A 750 HOH A1867 SITE 4 AC6 14 HOH A1870 HOH A1931 SITE 1 AC7 16 TRP B 409 ARG B 414 CYS B 415 PHE B 584 SITE 2 AC7 16 SER B 585 TRP B 587 GLU B 592 TRP B 678 SITE 3 AC7 16 TYR B 706 H4B B2760 NRG B2775 HOH B2874 SITE 4 AC7 16 HOH B2876 HOH B2907 HOH B2918 HOH B2949 SITE 1 AC8 13 TRP A 676 PHE A 691 HIS A 692 SER B 334 SITE 2 AC8 13 MET B 336 ARG B 596 VAL B 677 TRP B 678 SITE 3 AC8 13 HEM B 750 HOH B2861 HOH B2875 HOH B2949 SITE 4 AC8 13 HOH B2966 SITE 1 AC9 13 GLN B 478 TYR B 562 PRO B 565 SER B 585 SITE 2 AC9 13 GLY B 586 TRP B 587 TYR B 588 GLU B 592 SITE 3 AC9 13 ASP B 597 HEM B 750 HOH B2862 HOH B2950 SITE 4 AC9 13 HOH B2972

CRYST1 51.650 110.490 164.740 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 0.019361 0.000000 0.000000 0.00000

SCALE2 0.000000 0.009051 0.000000 0.00000

SCALE3 0.000000 0.000000 0.006070 0.00000