HEADER OXIDOREDUCTASE 20-JUN-14 4QOI TITLE CRYSTAL STRUCTURE OF FMN QUINONE REDUCTASE 2 IN COMPLEX WITH MELATONIN TITLE 2 AT 1.55A COMPND MOL_ID: 1; COMPND 2 MOLECULE: RIBOSYLDIHYDRONICOTINAMIDE DEHYDROGENASE [QUINONE]; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: NRH DEHYDROGENASE [QUINONE] 2, NRH:QUINONE OXIDOREDUCTASE 2, COMPND 5 QUINONE REDUCTASE 2, QR2; COMPND 6 EC: 1.10.99.2; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: NQO2, NMOR2; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS QR2, FAD, FLAVOPROTEIN, METAL-BINDING, OXIDOREDUCTASE, OXIDOREDUCTASE KEYWDS 2 FLAVOPROTEIN, FMN MELATONIN EXPDTA X-RAY DIFFRACTION AUTHOR J.SERRIERE,J.A.BOUTIN,T.ISABET,M.ANTOINE,G.FERRY REVDAT 2 20-SEP-23 4QOI 1 REMARK SEQADV LINK REVDAT 1 01-JUL-15 4QOI 0 JRNL AUTH J.SERRIERE,J.A.BOUTIN,T.ISABET,M.ANTOINE,G.FERRY JRNL TITL CRYSTAL STRUCTURE OF FMN QUINONE REDUCTASE 2 IN COMPLEX WITH JRNL TITL 2 MELATONIN AT 1.55A JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.55 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : BUSTER 2.11.5 REMARK 3 AUTHORS : BRICOGNE,BLANC,BRANDL,FLENSBURG,KELLER, REMARK 3 : PACIOREK,ROVERSI,SHARFF,SMART,VONRHEIN, REMARK 3 : WOMACK,MATTHEWS,TEN EYCK,TRONRUD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.55 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 22.69 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 3 NUMBER OF REFLECTIONS : 73249 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 + TEST SET) : 0.178 REMARK 3 R VALUE (WORKING SET) : 0.177 REMARK 3 FREE R VALUE : 0.197 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 3662 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (ANGSTROMS) : 1.55 REMARK 3 BIN RESOLUTION RANGE LOW (ANGSTROMS) : 1.59 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.30 REMARK 3 REFLECTIONS IN BIN (WORKING + TEST SET) : 5246 REMARK 3 BIN R VALUE (WORKING + TEST SET) : 0.2356 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4984 REMARK 3 BIN R VALUE (WORKING SET) : 0.2338 REMARK 3 BIN FREE R VALUE : 0.2673 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.99 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 262 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3638 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 98 REMARK 3 SOLVENT ATOMS : 304 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 23.18 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 29.99 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -3.71330 REMARK 3 B22 (A**2) : 0.06820 REMARK 3 B33 (A**2) : 3.64510 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) : 0.217 REMARK 3 DPI (BLOW EQ-10) BASED ON R VALUE (A) : NULL REMARK 3 DPI (BLOW EQ-9) BASED ON FREE R VALUE (A) : NULL REMARK 3 DPI (CRUICKSHANK) BASED ON R VALUE (A) : 0.075 REMARK 3 DPI (CRUICKSHANK) BASED ON FREE R VALUE (A) : NULL REMARK 3 REMARK 3 REFERENCES: BLOW, D. (2002) ACTA CRYST D58, 792-797 REMARK 3 CRUICKSHANK, D.W.J. (1999) ACTA CRYST D55, 583-601 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.961 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.955 REMARK 3 REMARK 3 NUMBER OF GEOMETRIC FUNCTION TERMS DEFINED : 15 REMARK 3 TERM COUNT WEIGHT FUNCTION. REMARK 3 BOND LENGTHS : NULL ; NULL ; NULL REMARK 3 BOND ANGLES : NULL ; NULL ; NULL REMARK 3 TORSION ANGLES : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES : NULL ; NULL ; NULL REMARK 3 GENERAL PLANES : NULL ; NULL ; NULL REMARK 3 ISOTROPIC THERMAL FACTORS : NULL ; NULL ; NULL REMARK 3 BAD NON-BONDED CONTACTS : NULL ; NULL ; NULL REMARK 3 IMPROPER TORSIONS : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES : NULL ; NULL ; NULL REMARK 3 CHIRAL IMPROPER TORSION : NULL ; NULL ; NULL REMARK 3 SUM OF OCCUPANCIES : NULL ; NULL ; NULL REMARK 3 UTILITY DISTANCES : NULL ; NULL ; NULL REMARK 3 UTILITY ANGLES : NULL ; NULL ; NULL REMARK 3 UTILITY TORSION : NULL ; NULL ; NULL REMARK 3 IDEAL-DIST CONTACT TERM : NULL ; NULL ; NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 0.97 REMARK 3 PEPTIDE OMEGA TORSION ANGLES (DEGREES) : NULL REMARK 3 OTHER TORSION ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 4QOI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-JUN-14. REMARK 100 THE DEPOSITION ID IS D_1000086313. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 11-FEB-14 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SOLEIL REMARK 200 BEAMLINE : PROXIMA 1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9998 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : PSI PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 73249 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.550 REMARK 200 RESOLUTION RANGE LOW (A) : 22.690 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.55 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.64 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.2 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 : 1.540 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: 2QWX REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.12 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.42 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M HEPES PH7, 1.4M AMSO4, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 298K 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 28.12000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 53.41500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 41.81500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 53.41500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 28.12000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 41.81500 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: 7260 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18160 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -20.0 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 MET A 0 REMARK 465 ALA A 1 REMARK 465 MET B 0 REMARK 465 ALA B 1 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 ASN A 45 O HOH A 575 2.02 REMARK 500 O HOH B 446 O HOH B 521 2.19 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 TYR A 132 -123.67 49.17 REMARK 500 TYR A 155 50.72 -94.43 REMARK 500 TYR B 132 -116.39 44.73 REMARK 500 TYR B 132 -118.35 61.67 REMARK 500 TYR B 155 42.58 -97.35 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 ZN A 302 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 173 ND1 REMARK 620 2 HIS A 177 ND1 108.4 REMARK 620 3 CYS A 222 O 105.1 96.1 REMARK 620 4 CYS A 222 SG 127.9 114.1 99.0 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 302 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 173 ND1 REMARK 620 2 HIS B 177 ND1 102.3 REMARK 620 3 CYS B 222 O 106.2 94.5 REMARK 620 4 CYS B 222 SG 129.2 113.6 105.5 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 FMN A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ML1 A 303 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMN B 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ML1 B 303 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4QOD RELATED DB: PDB REMARK 900 RELATED ID: 4QOE RELATED DB: PDB REMARK 900 RELATED ID: 4QOF RELATED DB: PDB REMARK 900 RELATED ID: 4QOG RELATED DB: PDB REMARK 900 RELATED ID: 4QOH RELATED DB: PDB REMARK 900 RELATED ID: 4QOJ RELATED DB: PDB DBREF 4QOI A 0 230 UNP P16083 NQO2_HUMAN 1 231 DBREF 4QOI B 0 230 UNP P16083 NQO2_HUMAN 1 231 SEQADV 4QOI PHE A 46 UNP P16083 LEU 47 VARIANT SEQADV 4QOI PHE B 46 UNP P16083 LEU 47 VARIANT SEQRES 1 A 231 MET ALA GLY LYS LYS VAL LEU ILE VAL TYR ALA HIS GLN SEQRES 2 A 231 GLU PRO LYS SER PHE ASN GLY SER LEU LYS ASN VAL ALA SEQRES 3 A 231 VAL ASP GLU LEU SER ARG GLN GLY CYS THR VAL THR VAL SEQRES 4 A 231 SER ASP LEU TYR ALA MET ASN PHE GLU PRO ARG ALA THR SEQRES 5 A 231 ASP LYS ASP ILE THR GLY THR LEU SER ASN PRO GLU VAL SEQRES 6 A 231 PHE ASN TYR GLY VAL GLU THR HIS GLU ALA TYR LYS GLN SEQRES 7 A 231 ARG SER LEU ALA SER ASP ILE THR ASP GLU GLN LYS LYS SEQRES 8 A 231 VAL ARG GLU ALA ASP LEU VAL ILE PHE GLN PHE PRO LEU SEQRES 9 A 231 TYR TRP PHE SER VAL PRO ALA ILE LEU LYS GLY TRP MET SEQRES 10 A 231 ASP ARG VAL LEU CYS GLN GLY PHE ALA PHE ASP ILE PRO SEQRES 11 A 231 GLY PHE TYR ASP SER GLY LEU LEU GLN GLY LYS LEU ALA SEQRES 12 A 231 LEU LEU SER VAL THR THR GLY GLY THR ALA GLU MET TYR SEQRES 13 A 231 THR LYS THR GLY VAL ASN GLY ASP SER ARG TYR PHE LEU SEQRES 14 A 231 TRP PRO LEU GLN HIS GLY THR LEU HIS PHE CYS GLY PHE SEQRES 15 A 231 LYS VAL LEU ALA PRO GLN ILE SER PHE ALA PRO GLU ILE SEQRES 16 A 231 ALA SER GLU GLU GLU ARG LYS GLY MET VAL ALA ALA TRP SEQRES 17 A 231 SER GLN ARG LEU GLN THR ILE TRP LYS GLU GLU PRO ILE SEQRES 18 A 231 PRO CYS THR ALA HIS TRP HIS PHE GLY GLN SEQRES 1 B 231 MET ALA GLY LYS LYS VAL LEU ILE VAL TYR ALA HIS GLN SEQRES 2 B 231 GLU PRO LYS SER PHE ASN GLY SER LEU LYS ASN VAL ALA SEQRES 3 B 231 VAL ASP GLU LEU SER ARG GLN GLY CYS THR VAL THR VAL SEQRES 4 B 231 SER ASP LEU TYR ALA MET ASN PHE GLU PRO ARG ALA THR SEQRES 5 B 231 ASP LYS ASP ILE THR GLY THR LEU SER ASN PRO GLU VAL SEQRES 6 B 231 PHE ASN TYR GLY VAL GLU THR HIS GLU ALA TYR LYS GLN SEQRES 7 B 231 ARG SER LEU ALA SER ASP ILE THR ASP GLU GLN LYS LYS SEQRES 8 B 231 VAL ARG GLU ALA ASP LEU VAL ILE PHE GLN PHE PRO LEU SEQRES 9 B 231 TYR TRP PHE SER VAL PRO ALA ILE LEU LYS GLY TRP MET SEQRES 10 B 231 ASP ARG VAL LEU CYS GLN GLY PHE ALA PHE ASP ILE PRO SEQRES 11 B 231 GLY PHE TYR ASP SER GLY LEU LEU GLN GLY LYS LEU ALA SEQRES 12 B 231 LEU LEU SER VAL THR THR GLY GLY THR ALA GLU MET TYR SEQRES 13 B 231 THR LYS THR GLY VAL ASN GLY ASP SER ARG TYR PHE LEU SEQRES 14 B 231 TRP PRO LEU GLN HIS GLY THR LEU HIS PHE CYS GLY PHE SEQRES 15 B 231 LYS VAL LEU ALA PRO GLN ILE SER PHE ALA PRO GLU ILE SEQRES 16 B 231 ALA SER GLU GLU GLU ARG LYS GLY MET VAL ALA ALA TRP SEQRES 17 B 231 SER GLN ARG LEU GLN THR ILE TRP LYS GLU GLU PRO ILE SEQRES 18 B 231 PRO CYS THR ALA HIS TRP HIS PHE GLY GLN HET FMN A 301 50 HET ZN A 302 1 HET ML1 A 303 33 HET FMN B 301 50 HET ZN B 302 1 HET ML1 B 303 33 HETNAM FMN FLAVIN MONONUCLEOTIDE HETNAM ZN ZINC ION HETNAM ML1 N-[2-(5-METHOXY-1H-INDOL-3-YL)ETHYL]ACETAMIDE HETSYN FMN RIBOFLAVIN MONOPHOSPHATE HETSYN ML1 MELATONIN FORMUL 3 FMN 2(C17 H21 N4 O9 P) FORMUL 4 ZN 2(ZN 2+) FORMUL 5 ML1 2(C13 H16 N2 O2) FORMUL 9 HOH *304(H2 O) HELIX 1 1 SER A 16 GLN A 32 1 17 HELIX 2 2 THR A 51 ILE A 55 5 5 HELIX 3 3 ASN A 66 ARG A 78 1 13 HELIX 4 4 ALA A 81 ALA A 94 1 14 HELIX 5 5 PRO A 109 LEU A 120 1 12 HELIX 6 6 PHE A 131 GLY A 135 5 5 HELIX 7 7 ALA A 152 THR A 156 5 5 HELIX 8 8 ASP A 163 HIS A 173 1 11 HELIX 9 9 SER A 196 THR A 213 1 18 HELIX 10 10 ILE A 214 GLU A 217 5 4 HELIX 11 11 THR A 223 GLY A 229 1 7 HELIX 12 12 SER B 16 GLN B 32 1 17 HELIX 13 13 THR B 51 ILE B 55 5 5 HELIX 14 14 ASN B 66 GLN B 77 1 12 HELIX 15 15 ALA B 81 ALA B 94 1 14 HELIX 16 16 PRO B 109 LEU B 120 1 12 HELIX 17 17 PHE B 131 GLY B 135 5 5 HELIX 18 18 ALA B 152 THR B 156 5 5 HELIX 19 19 ASP B 163 HIS B 173 1 11 HELIX 20 20 SER B 196 THR B 213 1 18 HELIX 21 21 ILE B 214 GLU B 217 5 4 HELIX 22 22 THR B 223 PHE B 228 1 6 SHEET 1 A 5 THR A 35 ASP A 40 0 SHEET 2 A 5 LYS A 4 TYR A 9 1 N VAL A 5 O THR A 35 SHEET 3 A 5 LEU A 96 PRO A 102 1 O ILE A 98 N LEU A 6 SHEET 4 A 5 LEU A 141 THR A 147 1 O SER A 145 N PHE A 99 SHEET 5 A 5 LYS A 182 VAL A 183 1 O LYS A 182 N ALA A 142 SHEET 1 B 5 THR A 35 ASP A 40 0 SHEET 2 B 5 LYS A 4 TYR A 9 1 N VAL A 5 O THR A 35 SHEET 3 B 5 LEU A 96 PRO A 102 1 O ILE A 98 N LEU A 6 SHEET 4 B 5 LEU A 141 THR A 147 1 O SER A 145 N PHE A 99 SHEET 5 B 5 GLN A 187 SER A 189 1 O SER A 189 N VAL A 146 SHEET 1 C 5 THR B 35 ASP B 40 0 SHEET 2 C 5 LYS B 4 TYR B 9 1 N VAL B 5 O THR B 35 SHEET 3 C 5 LEU B 96 PRO B 102 1 O ILE B 98 N VAL B 8 SHEET 4 C 5 LEU B 141 THR B 147 1 O SER B 145 N PHE B 99 SHEET 5 C 5 LYS B 182 VAL B 183 1 O LYS B 182 N ALA B 142 SHEET 1 D 5 THR B 35 ASP B 40 0 SHEET 2 D 5 LYS B 4 TYR B 9 1 N VAL B 5 O THR B 35 SHEET 3 D 5 LEU B 96 PRO B 102 1 O ILE B 98 N VAL B 8 SHEET 4 D 5 LEU B 141 THR B 147 1 O SER B 145 N PHE B 99 SHEET 5 D 5 GLN B 187 SER B 189 1 O GLN B 187 N LEU B 144 LINK ND1 HIS A 173 ZN ZN A 302 1555 1555 2.04 LINK ND1 HIS A 177 ZN ZN A 302 1555 1555 1.99 LINK O CYS A 222 ZN ZN A 302 1555 1555 2.14 LINK SG CYS A 222 ZN ZN A 302 1555 1555 2.24 LINK ND1 HIS B 173 ZN ZN B 302 1555 1555 2.10 LINK ND1 HIS B 177 ZN ZN B 302 1555 1555 2.11 LINK O CYS B 222 ZN ZN B 302 1555 1555 2.09 LINK SG CYS B 222 ZN ZN B 302 1555 1555 2.17 CISPEP 1 ILE A 128 PRO A 129 0 -0.44 CISPEP 2 ILE B 128 PRO B 129 0 -2.77 CISPEP 3 ILE B 128 PRO B 129 0 11.04 SITE 1 AC1 23 HIS A 11 SER A 16 PHE A 17 ASN A 18 SITE 2 AC1 23 PRO A 102 LEU A 103 TYR A 104 TRP A 105 SITE 3 AC1 23 PHE A 106 THR A 147 THR A 148 GLY A 149 SITE 4 AC1 23 GLY A 150 TYR A 155 GLU A 193 HOH A 437 SITE 5 AC1 23 HOH A 469 HOH A 541 HOH A 570 HOH A 572 SITE 6 AC1 23 ASP B 117 ML1 B 303 HOH B 527 SITE 1 AC2 3 HIS A 173 HIS A 177 CYS A 222 SITE 1 AC3 8 PHE A 126 GLY A 174 PHE A 178 TRP B 105 SITE 2 AC3 8 PHE B 106 ILE B 194 FMN B 301 HOH B 522 SITE 1 AC4 22 ASP A 117 ML1 A 303 HIS B 11 SER B 16 SITE 2 AC4 22 PHE B 17 ASN B 18 PRO B 102 LEU B 103 SITE 3 AC4 22 TYR B 104 TRP B 105 PHE B 106 THR B 147 SITE 4 AC4 22 THR B 148 GLY B 149 GLY B 150 TYR B 155 SITE 5 AC4 22 GLU B 193 HOH B 424 HOH B 434 HOH B 480 SITE 6 AC4 22 HOH B 514 HOH B 520 SITE 1 AC5 3 HIS B 173 HIS B 177 CYS B 222 SITE 1 AC6 10 GLY A 149 GLY A 150 MET A 154 FMN A 301 SITE 2 AC6 10 PHE B 126 ILE B 128 PHE B 131 PHE B 178 SITE 3 AC6 10 HOH B 463 HOH B 517 CRYST1 56.240 83.630 106.830 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 0.017781 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011957 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009361 0.00000