HEADER SIGNALING PROTEIN 06-APR-00 1ERX TITLE CRYSTAL STRUCTURE OF NITROPHORIN 4 COMPLEXED WITH NO COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITROPHORIN 4; COMPND 3 CHAIN: A SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHODNIUS PROLIXUS; SOURCE 3 ORGANISM_TAXID: 13249; SOURCE 4 OTHER_DETAILS: SALIVA KEYWDS BETA BARREL, FERRIC HEME, NITRIC OXIDE COMPLEX, SIGNALING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR A.WEICHSEL,J.F.ANDERSEN,S.A.ROBERTS,W.R.MONTFORT REVDAT 8 06-NOV-24 1ERX 1 REMARK SHEET LINK REVDAT 7 18-APR-18 1ERX 1 REMARK REVDAT 6 31-JAN-18 1ERX 1 JRNL REVDAT 5 04-OCT-17 1ERX 1 REMARK REVDAT 4 24-FEB-09 1ERX 1 VERSN REVDAT 3 01-APR-03 1ERX 1 JRNL REVDAT 2 26-JUL-00 1ERX 1 JRNL REVDAT 1 03-MAY-00 1ERX 0 JRNL AUTH A.WEICHSEL,J.F.ANDERSEN,S.A.ROBERTS,W.R.MONTFORT JRNL TITL NITRIC OXIDE BINDING TO NITROPHORIN 4 INDUCES COMPLETE JRNL TITL 2 DISTAL POCKET BURIAL. JRNL REF NAT.STRUCT.BIOL. V. 7 551 2000 JRNL REFN ISSN 1072-8368 JRNL PMID 10876239 JRNL DOI 10.1038/76769 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.F.ANDERSEN,A.WEICHSEL,C.A.BALFOUR,D.E.CHAMPAGNE, REMARK 1 AUTH 2 W.R.MONTFORT REMARK 1 TITL THE CRYSTAL STRUCTURE OF NITROPHORIN 4 AT 1.5 A RESOLUTION: REMARK 1 TITL 2 TRANSPORT OF NITRIC OXIDE BY A LIPOCALIN-BASED HEME PROTEIN. REMARK 1 REF STRUCTURE V. 6 1315 1998 REMARK 1 REFN ISSN 0969-2126 REMARK 1 DOI 10.1016/S0969-2126(98)00131-2 REMARK 1 REFERENCE 2 REMARK 1 AUTH X.D.DING,A.WEICHSEL,J.F.ANDERSEN,T.K.SHOKHIREVA,C.A.BALFOUR, REMARK 1 AUTH 2 A.J.PIERIK,B.A.AVERILL,W.R.MONTFORT,F.A.WALKER REMARK 1 TITL NITRIC OXIDE BINDING TO THE FERRI- AND FERROHEME STATES OF REMARK 1 TITL 2 NITROPHORIN 1, A REVERSIBLE NO-BINDING HEME PROTEIN FROM THE REMARK 1 TITL 3 SALIVA OF THE BLOOD-SUCKING INSECT, RHODNIUS PROLIXUS. REMARK 1 REF J.AM.CHEM.SOC. V. 121 128 1999 REMARK 1 REFN ISSN 0002-7863 REMARK 1 DOI 10.1021/JA982979I REMARK 2 REMARK 2 RESOLUTION. 1.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.170 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.170 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.240 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1401 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 28023 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1428 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 60 REMARK 3 SOLVENT ATOMS : 160 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : NULL REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : NULL REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : NULL REMARK 3 NUMBER OF RESTRAINTS : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 ANGLE DISTANCES (A) : 0.039 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : NULL REMARK 3 ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : NULL REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : NULL REMARK 3 SIMILAR ADP COMPONENTS (A**2) : NULL REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH & HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: ANISOTROPIC TEMPERATURE FACTOR REMARK 3 REFINEMENT REMARK 4 REMARK 4 1ERX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-APR-00. REMARK 100 THE DEPOSITION ID IS D_1000010841. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-APR-99 REMARK 200 TEMPERATURE (KELVIN) : 140 REMARK 200 PH : 5.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : ENRAF-NONIUS FR571 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MADNESS REMARK 200 DATA SCALING SOFTWARE : SCALA, CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 28023 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.400 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 91.0 REMARK 200 DATA REDUNDANCY : 2.000 REMARK 200 R MERGE (I) : 0.11000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 9.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.48 REMARK 200 COMPLETENESS FOR SHELL (%) : 79.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.70 REMARK 200 R MERGE FOR SHELL (I) : 0.30000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 36.48 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.94 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, SODIUM CITRATE, PH 5.6, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 35.15950 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 21.31800 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 35.15950 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.31800 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 300 REMARK: BIOLOGICAL ASSEMBLY IS A MONOMER REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 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 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 273 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 338 LIES ON A SPECIAL POSITION. 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 OG SER A 177 O HOH A 270 2.10 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 OD2 ASP A 114 OD2 ASP A 114 2557 1.11 REMARK 500 CG ASP A 114 OD2 ASP A 114 2557 1.97 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 TYR A 28 CB - CG - CD2 ANGL. DEV. = 3.9 DEGREES REMARK 500 ARG A 39 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 TYR A 111 CB - CG - CD2 ANGL. DEV. = 4.1 DEGREES REMARK 500 TYR A 111 CB - CG - CD1 ANGL. DEV. = -4.0 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 GLU A 32 79.99 -106.48 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 HEV A 185 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 59 NE2 REMARK 620 2 HEV A 185 NA 86.5 REMARK 620 3 HEV A 185 NB 87.9 89.3 REMARK 620 4 HEV A 185 NC 88.2 173.3 94.7 REMARK 620 5 HEV A 185 ND 89.7 87.7 176.2 88.1 REMARK 620 6 NO A 186 N 174.9 89.3 89.3 96.2 92.9 REMARK 620 7 NO A 186 N 166.0 88.4 105.1 95.8 77.1 15.8 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEV A 185 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO A 186 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CIT A 347 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1EQD RELATED DB: PDB REMARK 900 1EQD CONTAINS THE SAME PROTEIN COMPLEXED WITH CN REMARK 900 RELATED ID: 1D3S RELATED DB: PDB REMARK 900 1D3S CONTAINS THE SAME PROTEIN COMPLEXED WITH H2O REMARK 900 RELATED ID: 1NP4 RELATED DB: PDB REMARK 900 1NP4 CONTAINS THE SAME PROTEIN AT PH 7.5 DBREF 1ERX A 1 184 UNP Q94734 NP4_RHOPR 22 205 SEQRES 1 A 184 ALA CYS THR LYS ASN ALA ILE ALA GLN THR GLY PHE ASN SEQRES 2 A 184 LYS ASP LYS TYR PHE ASN GLY ASP VAL TRP TYR VAL THR SEQRES 3 A 184 ASP TYR LEU ASP LEU GLU PRO ASP ASP VAL PRO LYS ARG SEQRES 4 A 184 TYR CYS ALA ALA LEU ALA ALA GLY THR ALA SER GLY LYS SEQRES 5 A 184 LEU LYS GLU ALA LEU TYR HIS TYR ASP PRO LYS THR GLN SEQRES 6 A 184 ASP THR PHE TYR ASP VAL SER GLU LEU GLN VAL GLU SER SEQRES 7 A 184 LEU GLY LYS TYR THR ALA ASN PHE LYS LYS VAL ASP LYS SEQRES 8 A 184 ASN GLY ASN VAL LYS VAL ALA VAL THR ALA GLY ASN TYR SEQRES 9 A 184 TYR THR PHE THR VAL MET TYR ALA ASP ASP SER SER ALA SEQRES 10 A 184 LEU ILE HIS THR CYS LEU HIS LYS GLY ASN LYS ASP LEU SEQRES 11 A 184 GLY ASP LEU TYR ALA VAL LEU ASN ARG ASN LYS ASP ALA SEQRES 12 A 184 ALA ALA GLY ASP LYS VAL LYS SER ALA VAL SER ALA ALA SEQRES 13 A 184 THR LEU GLU PHE SER LYS PHE ILE SER THR LYS GLU ASN SEQRES 14 A 184 ASN CYS ALA TYR ASP ASN ASP SER LEU LYS SER LEU LEU SEQRES 15 A 184 THR LYS HET HEV A 185 45 HET NO A 186 4 HET CIT A 347 13 HETNAM HEV 5,8-DIMETHYL-1,2,3,4-TETRAVINYLPORPHINE-6,7-DIPROPIONIC HETNAM 2 HEV ACID FERROUS COMPLEX HETNAM NO NITRIC OXIDE HETNAM CIT CITRIC ACID HETSYN HEV 1,3-DEDIMETHYL-1,3-DIVINYL HEME HETSYN NO NITROGEN MONOXIDE FORMUL 2 HEV C36 H32 FE N4 O4 FORMUL 3 NO N O FORMUL 4 CIT C6 H8 O7 FORMUL 5 HOH *160(H2 O) HELIX 1 1 ASN A 13 PHE A 18 1 6 HELIX 2 2 GLU A 32 VAL A 36 5 5 HELIX 3 3 GLY A 146 ALA A 156 1 11 HELIX 4 4 GLU A 159 PHE A 163 5 5 HELIX 5 5 ASP A 174 LEU A 182 1 9 SHEET 1 A11 ASN A 19 ASP A 30 0 SHEET 2 A11 ASP A 132 ASN A 138 -1 O TYR A 134 N LEU A 29 SHEET 3 A11 SER A 116 HIS A 124 -1 O ALA A 117 N LEU A 137 SHEET 4 A11 TYR A 104 ALA A 112 -1 O TYR A 104 N HIS A 124 SHEET 5 A11 LYS A 81 VAL A 89 -1 O TYR A 82 N PHE A 107 SHEET 6 A11 THR A 67 SER A 78 -1 O TYR A 69 N VAL A 89 SHEET 7 A11 LYS A 52 TYR A 60 -1 O LEU A 53 N LEU A 74 SHEET 8 A11 CYS A 41 ALA A 49 -1 O CYS A 41 N TYR A 60 SHEET 9 A11 ASN A 19 ASP A 30 -1 N GLY A 20 O ALA A 46 SHEET 10 A11 LYS A 81 VAL A 89 0 SHEET 11 A11 VAL A 95 VAL A 97 -1 N LYS A 96 O LYS A 88 SSBOND 1 CYS A 2 CYS A 122 1555 1555 2.02 SSBOND 2 CYS A 41 CYS A 171 1555 1555 2.00 LINK NE2 HIS A 59 FE HEV A 185 1555 1555 2.00 LINK FE HEV A 185 N A NO A 186 1555 1555 1.51 LINK FE HEV A 185 N B NO A 186 1555 1555 1.97 SITE 1 AC1 19 VAL A 25 TYR A 28 VAL A 36 TYR A 40 SITE 2 AC1 19 ALA A 42 LEU A 57 HIS A 59 PHE A 68 SITE 3 AC1 19 ASP A 70 PHE A 86 LYS A 88 TYR A 105 SITE 4 AC1 19 PHE A 107 LEU A 123 LYS A 125 LEU A 130 SITE 5 AC1 19 LEU A 133 NO A 186 HOH A 291 SITE 1 AC2 4 HIS A 59 LEU A 130 LEU A 133 HEV A 185 SITE 1 AC3 6 ASN A 85 ALA A 101 GLY A 102 ASN A 103 SITE 2 AC3 6 TYR A 104 HOH A 337 CRYST1 70.319 42.636 52.573 90.00 94.19 90.00 C 1 2 1 4 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 0.014221 0.000000 0.001042 0.00000 SCALE2 0.000000 0.023454 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019072 0.00000