HEADER TRANSPORT PROTEIN 30-SEP-99 1D3S TITLE 1.4 A CRYSTAL STRUCTURE OF NITROPHORIN 4 FROM RHODNIUS PROLIXIS AT TITLE 2 PH=5.6. COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITROPHORIN 4; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RESIDUES 22-205; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHODNIUS PROLIXUS; SOURCE 3 ORGANISM_TAXID: 13249; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3); SOURCE 7 EXPRESSION_SYSTEM_ORGAN: SALIVARY GLAND; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_VECTOR: PET17B; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET17B-NP4; SOURCE 11 OTHER_DETAILS: SALIVARY GLAND KEYWDS NITRIC OXIDE TRANSPORT, FERRIC HEME, ANTIHISTAMINE, VASODILATOR, KEYWDS 2 LIPOCALIN, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR A.WEICHSEL,J.F.ANDERSEN,S.A.ROBERTS,W.R.MONTFORT REVDAT 6 30-OCT-24 1D3S 1 REMARK REVDAT 5 18-APR-18 1D3S 1 REMARK REVDAT 4 04-OCT-17 1D3S 1 REMARK REVDAT 3 29-OCT-14 1D3S 1 HETATM VERSN REVDAT 2 24-FEB-09 1D3S 1 VERSN REVDAT 1 07-JUL-00 1D3S 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 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) : 30.00 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) : 0.210 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.210 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.250 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1284 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 25227 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 : 43 REMARK 3 SOLVENT ATOMS : 197 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) : 0.030 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: REMARK 3 SHELXL REFINEMENT, FE, S ATOMS ANISOTROPIC (EXCEPT FOR C41SG WHICH REMARK 3 IS REMARK 3 DISORDERED) FE-LIGAND DISTANCES/ANGLES NOT RESTRAINED. REMARK 4 REMARK 4 1D3S COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-SEP-99. REMARK 100 THE DEPOSITION ID IS D_1000009767. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 06-MAY-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 : 25227 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.400 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 80.0 REMARK 200 DATA REDUNDANCY : 2.650 REMARK 200 R MERGE (I) : 0.12000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.3000 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) : 1.45 REMARK 200 COMPLETENESS FOR SHELL (%) : 79.0 REMARK 200 DATA REDUNDANCY IN SHELL : 2.30 REMARK 200 R MERGE FOR SHELL (I) : 0.15000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 36.51 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.94 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 23% PEG 4000 20 MM SODIUM CITRATE PH REMARK 280 5.6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K 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 35.09000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 21.26000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 35.09000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.26000 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: 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 206 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 207 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 208 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 290 LIES ON A SPECIAL POSITION. 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 VAL A 36 C - N - CA ANGL. DEV. = 33.1 DEGREES REMARK 500 CYS A 41 CA - CB - SG ANGL. DEV. = 21.4 DEGREES REMARK 500 CYS A 41 CA - CB - SG ANGL. DEV. = -15.6 DEGREES REMARK 500 TYR A 105 CB - CG - CD2 ANGL. DEV. = 4.7 DEGREES REMARK 500 TYR A 111 CB - CG - CD2 ANGL. DEV. = 7.6 DEGREES REMARK 500 TYR A 111 CB - CG - CD1 ANGL. DEV. = -4.1 DEGREES REMARK 500 ASN A 127 CA - CB - CG ANGL. DEV. = -14.0 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 ASP A 34 -95.11 -111.07 REMARK 500 VAL A 36 167.13 168.11 REMARK 500 PRO A 37 81.90 -58.87 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 PRO A 33 -10.92 REMARK 500 REMARK 500 REMARK: NULL REMARK 600 REMARK 600 HETEROGEN REMARK 600 REMARK 600 AMMONIA (NH3) OCCUPIES THE FE SIXTH COORDINATION REMARK 600 POSITION. THE HEME IS DISORDERED BY A ROTATION OF REMARK 600 180 DEGREES AROUND THE CHA-FE-CHC AXIS. REMARK 600 THE ONLY EVIDENCE OF THIS DISORDER IS THE APPEARENCE REMARK 600 OF METHYL GROUPS CMB AND CMC AS VINYLS. REMARK 600 THESE EXTRA ATOMS ARE CALLED CBBB AND CBCB. REMARK 600 THE LOOP CONTAINING RESIDUES 32-38 IS DISORDERED. REMARK 600 THERE IS NO OBSERVED ELECTRON DENSITY FOR THESE REMARK 600 RESIDUES AND THEIR POSITIONS AND CONFORMATIONS ARE REMARK 600 NOT RELIABLE. 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 HEM A 185 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 59 NE2 REMARK 620 2 HEM A 185 NA 86.4 REMARK 620 3 HEM A 185 NB 88.7 88.9 REMARK 620 4 HEM A 185 NC 92.1 178.0 92.5 REMARK 620 5 HEM A 185 ND 91.4 89.5 178.4 89.2 REMARK 620 6 HOH A 186 O 175.7 90.1 93.6 91.4 86.2 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 185 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1NP4 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF NITROPHORIN 4, ROOM TEMPERATURE, PH=5.6 REMARK 900 RELATED ID: 1D2U RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF NITROPHORIN 4, 105 K, PH=7.5 DBREF 1D3S 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 HEM A 185 83 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 HOH *197(H2 O) HELIX 1 1 ASN A 13 PHE A 18 1 6 HELIX 2 2 GLY A 146 ALA A 156 1 11 HELIX 3 3 GLU A 159 PHE A 163 5 5 HELIX 4 4 LYS A 167 ASN A 170 5 4 HELIX 5 5 ASP A 174 LEU A 182 1 9 SHEET 1 A12 ILE A 164 SER A 165 0 SHEET 2 A12 ASN A 19 ASP A 30 -1 O TYR A 28 N ILE A 164 SHEET 3 A12 CYS A 41 ALA A 49 -1 O ALA A 42 N VAL A 25 SHEET 4 A12 LYS A 52 TYR A 60 -1 O LYS A 52 N ALA A 49 SHEET 5 A12 THR A 67 SER A 78 -1 O PHE A 68 N HIS A 59 SHEET 6 A12 LYS A 81 VAL A 89 -1 O LYS A 81 N GLU A 77 SHEET 7 A12 VAL A 95 VAL A 97 -1 N LYS A 96 O LYS A 88 SHEET 8 A12 LYS A 81 VAL A 89 -1 O LYS A 88 N LYS A 96 SHEET 9 A12 ASN A 103 ALA A 112 -1 O ASN A 103 N PHE A 86 SHEET 10 A12 SER A 116 LYS A 125 -1 N LEU A 118 O TYR A 111 SHEET 11 A12 ASP A 132 ASN A 138 -1 N LEU A 133 O THR A 121 SHEET 12 A12 ASN A 19 ASP A 30 -1 N TYR A 24 O ASN A 138 SSBOND 1 CYS A 2 CYS A 122 1555 1555 2.00 SSBOND 2 CYS A 41 CYS A 171 1555 1555 1.91 LINK NE2 HIS A 59 FE HEM A 185 1555 1555 2.01 LINK FE HEM A 185 O HOH A 186 1555 1555 2.06 CISPEP 1 ASP A 35 VAL A 36 0 4.93 SITE 1 AC1 18 VAL A 25 TYR A 28 PRO A 37 TYR A 40 SITE 2 AC1 18 LEU A 44 LEU A 57 HIS A 59 PHE A 68 SITE 3 AC1 18 ASP A 70 PHE A 86 LYS A 88 TYR A 105 SITE 4 AC1 18 PHE A 107 LEU A 123 LYS A 125 LEU A 133 SITE 5 AC1 18 HOH A 186 HOH A 215 CRYST1 70.180 42.520 52.860 90.00 94.35 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 0.014249 0.000000 0.001084 0.00000 SCALE2 0.000000 0.023518 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018973 0.00000