1M00 - Header Asymmetric Unit

HEADER OXIDOREDUCTASE 11-JUN-02 1M00

TITLE RAT NEURONAL NOS HEME DOMAIN WITH N-BUTYL-N'-HYDROXYGUANIDINE BOUND

COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITRIC-OXIDE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 FRAGMENT: HEME DOMAIN; COMPND 5 SYNONYM: NOS, TYPE I, NEURONAL NOS, N-NOS, NNOS, CONSTITUTIVE NOS, COMPND 6 NC-NOS, BNOS; COMPND 7 EC: 1.14.13.39; COMPND 8 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 ORGAN: BRAIN; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PCWORI

KEYWDS NITRIC OXIDE SYNTHASE, OXYDOREDUCTASE, HEME-ENZYME, OXIDOREDUCTASE

EXPDTA X-RAY DIFFRACTION

AUTHOR H.LI,H.SHIMIZU,M.FLINSPACH,J.JAMAL,W.YANG,M.XIAN,T.CAI,E.Z.WEN,Q.JIA, AUTHOR 2 P.G.WANG,T.L.POULOS

REVDAT 3 13-OCT-10 1M00 1 REMARK REVDAT 2 24-FEB-09 1M00 1 VERSN REVDAT 1 27-NOV-02 1M00 0

JRNL AUTH H.LI,H.SHIMIZU,M.FLINSPACH,J.JAMAL,W.YANG,M.XIAN,T.CAI, JRNL AUTH 2 E.Z.WEN,Q.JIA,P.G.WANG,T.L.POULOS JRNL TITL THE NOVEL BINDING MODE OF N-ALKYL-N'-HYDROXYGUANIDINE TO JRNL TITL 2 NEURONAL NITRIC OXIDE SYNTHASE PROVIDES MECHANISTIC INSIGHTS JRNL TITL 3 INTO NO BIOSYNTHESIS JRNL REF BIOCHEMISTRY V. 41 13868 2002 JRNL REFN ISSN 0006-2960 JRNL PMID 12437343 JRNL DOI 10.1021/BI020417C

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.S.RAMAN,H.LI,P.MARTASEK,V.KRAL,B.S.MASTERS,T.L.POULOS REMARK 1 TITL CRYSTAL STRUCTURE OF CONSTITUTIVE ENDOTHELIAL NITRIC OXIDE REMARK 1 TITL 2 SYNTHASE: A PARADIGM FOR PTERIN FUNCTION INVOLVING A NOVEL REMARK 1 TITL 3 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. 2.05 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) : 2.05 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 49.03 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 95.5 REMARK 3 NUMBER OF REFLECTIONS : 57951 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) : 0.229 REMARK 3 FREE R VALUE : 0.270 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2915 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) : 2.05 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.12 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 92.50 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 5237 REMARK 3 BIN R VALUE (WORKING SET) : 0.3330 REMARK 3 BIN FREE R VALUE : 0.3500 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 271 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.021 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 6653 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 147 REMARK 3 SOLVENT ATOMS : 498 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 25.70 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 7.44000 REMARK 3 B22 (A**2) : 4.52000 REMARK 3 B33 (A**2) : -11.96000 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) : 0.29 REMARK 3 ESD FROM SIGMAA (A) : 0.34 REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.35 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.37 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.50 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.80 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.18 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 : 0.37 REMARK 3 BSOL : 49.98 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: REMARK 3 RESIDUES 339-349 IN SUBUNIT A AND REMARK 3 339-347 IN SUBUNIT B ARE DISORDERED AND REMARK 3 THEREFORE ARE NOT INCLUDED IN THE MODEL.

REMARK 4 REMARK 4 1M00 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-JUN-02. REMARK 100 THE RCSB ID CODE IS RCSB016427.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-NOV-01 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.8 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 : MIRROR REMARK 200 OPTICS : NULL 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 : 58402 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.050 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.4 REMARK 200 DATA REDUNDANCY : 3.000 REMARK 200 R MERGE (I) : 0.07900 REMARK 200 R SYM (I) : 0.07900 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 9.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.09 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.7 REMARK 200 DATA REDUNDANCY IN SHELL : 2.80 REMARK 200 R MERGE FOR SHELL (I) : 0.62100 REMARK 200 R SYM FOR SHELL (I) : 0.62100 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.500 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 (%): 49.64 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.44 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG4000, MES, AMMONIUM ACETATE, PH REMARK 280 5.8, 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 26.03500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 81.92000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 55.62500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 81.92000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.03500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 55.62500 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: 10540 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 32930 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -72.0 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. = 6.8 DEGREES REMARK 500 CYS B 326 CA - CB - SG ANGL. DEV. = 12.8 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 THR A 321 -37.93 -133.92 REMARK 500 THR A 393 -168.86 -175.66 REMARK 500 THR A 466 -81.62 -118.02 REMARK 500 ASN A 527 12.39 56.53 REMARK 500 ASN A 529 171.26 -57.65 REMARK 500 LYS A 550 -39.47 -157.70 REMARK 500 CYS A 582 59.48 -147.29 REMARK 500 ARG A 603 -129.64 -123.52 REMARK 500 ASN A 605 69.23 29.76 REMARK 500 SER A 622 1.52 -69.04 REMARK 500 TRP A 711 4.53 -62.37 REMARK 500 TRP B 306 0.73 -69.54 REMARK 500 LYS B 370 44.57 71.71 REMARK 500 SER B 374 171.08 -58.99 REMARK 500 SER B 392 -3.90 83.48 REMARK 500 THR B 466 -80.20 -118.92 REMARK 500 CYS B 582 57.35 -149.12 REMARK 500 VAL B 595 -62.52 -93.00 REMARK 500 ARG B 603 -134.04 -115.36 REMARK 500 ASN B 605 63.74 33.77 REMARK 500 CYS B 672 99.46 -163.64 REMARK 500 PRO B 682 2.76 -67.45 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 A 975 DISTANCE = 5.15 ANGSTROMS REMARK 525 HOH A1048 DISTANCE = 5.38 ANGSTROMS REMARK 525 HOH B2020 DISTANCE = 5.44 ANGSTROMS REMARK 525 HOH B2047 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 A 900 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 326 SG REMARK 620 2 CYS A 331 SG 112.4 REMARK 620 3 CYS B 326 SG 124.8 103.1 REMARK 620 4 CYS B 331 SG 102.0 97.2 114.2 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A 750 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 415 SG REMARK 620 2 HEM A 750 NA 103.8 REMARK 620 3 HEM A 750 NB 94.5 88.1 REMARK 620 4 HEM A 750 NC 99.5 156.7 89.8 REMARK 620 5 HEM A 750 ND 98.5 89.0 167.0 87.8 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM B 750 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 415 SG REMARK 620 2 HEM B 750 NA 101.8 REMARK 620 3 HEM B 750 NB 96.0 85.7 REMARK 620 4 HEM B 750 NC 100.4 157.7 91.1 REMARK 620 5 HEM B 750 ND 97.1 91.9 166.9 86.2 REMARK 620 N 1 2 3 4

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 860 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 1860 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 900 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 750 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B A 760 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BHH A 831 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 750 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B B 1760 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BHH B 1831

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1LZX RELATED DB: PDB REMARK 900 RAT NEURONAL NOS HEME DOMAIN WITH NG-HYDROXY-L-ARGININE REMARK 900 BOUND REMARK 900 RELATED ID: 1LZZ RELATED DB: PDB REMARK 900 RAT NEURONAL NOS HEME DOMAIN WITH N-ISOPROPYL-N'- REMARK 900 HYDROXYGUANIDINE BOUND

DBREF 1M00 A 299 717 UNP P29476 NOS1_RAT 299 717 DBREF 1M00 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 A 860 4 HET ACT B1860 4 HET ZN A 900 1 HET HEM A 750 43 HET H4B A 760 17 HET BHH A 831 9 HET HEM B 750 43 HET H4B B1760 17 HET BHH B1831 9

HETNAM ACT ACETATE ION HETNAM ZN ZINC ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM H4B 5,6,7,8-TETRAHYDROBIOPTERIN HETNAM BHH N-BUTYL-N'-HYDROXYGUANIDINE

HETSYN HEM HEME

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 BHH 2(C5 H13 N3 O) FORMUL 12 HOH *498(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 TRP A 421 5 5 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 PHE A 551 GLY A 558 5 8 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 MET A 614 1 9 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 GLY B 590 VAL B 595 1 6 HELIX 31 31 VAL B 595 ASP B 600 1 6 HELIX 32 32 ILE B 606 MET B 614 1 9 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 4 GLN A 425 ASP A 428 0 SHEET 2 B 4 ALA A 458 ILE A 461 1 O ILE A 459 N PHE A 427 SHEET 3 B 4 PHE A 584 SER A 585 -1 O SER A 585 N ALA A 458 SHEET 4 B 4 ALA A 566 VAL A 567 -1 N VAL A 567 O PHE A 584 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 ILE A 574 O LEU A 577 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 4 GLN B 425 ASP B 428 0 SHEET 2 H 4 ALA B 458 ILE B 461 1 O ILE B 459 N PHE B 427 SHEET 3 H 4 PHE B 584 SER B 585 -1 O SER B 585 N ALA B 458 SHEET 4 H 4 ALA B 566 VAL B 567 -1 N VAL B 567 O PHE B 584 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 SHEET 1 M 2 TYR B 588 MET B 589 0 SHEET 2 M 2 ILE B 648 VAL B 649 1 O VAL B 649 N TYR B 588

LINK ZN ZN A 900 SG CYS A 326 1555 1555 2.26 LINK ZN ZN A 900 SG CYS A 331 1555 1555 2.32 LINK ZN ZN A 900 SG CYS B 326 1555 1555 2.31 LINK ZN ZN A 900 SG CYS B 331 1555 1555 2.36 LINK FE HEM A 750 SG CYS A 415 1555 1555 2.25 LINK FE HEM B 750 SG CYS B 415 1555 1555 2.25

CISPEP 1 THR A 701 PRO A 702 0 -0.93 CISPEP 2 THR B 701 PRO B 702 0 -0.22

SITE 1 AC1 5 GLY A 417 TRP A 587 SER A 657 HEM A 750 SITE 2 AC1 5 HOH A1059 SITE 1 AC2 5 GLN B 420 TRP B 587 HOH B1956 HOH B2113 SITE 2 AC2 5 HOH B2161 SITE 1 AC3 4 CYS A 326 CYS A 331 CYS B 326 CYS B 331 SITE 1 AC4 20 TRP A 409 CYS A 415 SER A 457 PHE A 584 SITE 2 AC4 20 SER A 585 GLY A 586 TRP A 587 GLU A 592 SITE 3 AC4 20 TRP A 678 TYR A 706 H4B A 760 BHH A 831 SITE 4 AC4 20 ACT A 860 HOH A 905 HOH A 907 HOH A 918 SITE 5 AC4 20 HOH A 973 HOH A 980 HOH A 986 HOH A1060 SITE 1 AC5 16 SER A 334 MET A 336 ARG A 596 VAL A 677 SITE 2 AC5 16 TRP A 678 HEM A 750 HOH A 902 HOH A 905 SITE 3 AC5 16 HOH A 917 HOH A 936 HOH A1028 TRP B 676 SITE 4 AC5 16 PHE B 691 HIS B 692 GLN B 693 GLU B 694 SITE 1 AC6 9 GLN A 478 PRO A 565 ALA A 566 GLY A 586 SITE 2 AC6 9 TRP A 587 GLU A 592 HEM A 750 HOH A 914 SITE 3 AC6 9 HOH A1060 SITE 1 AC7 16 TRP B 409 CYS B 415 PHE B 584 SER B 585 SITE 2 AC7 16 TRP B 587 GLU B 592 TRP B 678 TYR B 706 SITE 3 AC7 16 H4B B1760 BHH B1831 HOH B1872 HOH B1892 SITE 4 AC7 16 HOH B1942 HOH B1962 HOH B1988 HOH B2079 SITE 1 AC8 15 TRP A 676 PHE A 691 HIS A 692 GLN A 693 SITE 2 AC8 15 GLU A 694 SER B 334 MET B 336 ARG B 596 SITE 3 AC8 15 VAL B 677 TRP B 678 HEM B 750 HOH B1861 SITE 4 AC8 15 HOH B1886 HOH B1892 HOH B1941 SITE 1 AC9 9 GLN B 478 PRO B 565 VAL B 567 GLY B 586 SITE 2 AC9 9 TRP B 587 GLU B 592 HEM B 750 HOH B1873 SITE 3 AC9 9 HOH B1879

CRYST1 52.070 111.250 163.840 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 0.019205 0.000000 0.000000 0.00000

SCALE2 0.000000 0.008989 0.000000 0.00000

SCALE3 0.000000 0.000000 0.006104 0.00000