4FX2 - Header Asymmetric Unit

HEADER ELECTRON TRANSPORT 17-OCT-91 4FX2

TITLE COMPARISON OF THE CRYSTAL STRUCTURES OF A FLAVODOXIN IN ITS TITLE 2 THREE OXIDATION STATES AT CRYOGENIC TEMPERATURES

COMPND MOL_ID: 1; COMPND 2 MOLECULE: FLAVODOXIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: DESULFOVIBRIO VULGARIS; SOURCE 3 ORGANISM_TAXID: 881

KEYWDS ELECTRON TRANSPORT

EXPDTA X-RAY DIFFRACTION

AUTHOR W.WATT,K.D.WATENPAUGH

REVDAT 2 24-FEB-09 4FX2 1 VERSN REVDAT 1 31-OCT-93 4FX2 0

JRNL AUTH W.WATT,A.TULINSKY,R.P.SWENSON,K.D.WATENPAUGH JRNL TITL COMPARISON OF THE CRYSTAL STRUCTURES OF A JRNL TITL 2 FLAVODOXIN IN ITS THREE OXIDATION STATES AT JRNL TITL 3 CRYOGENIC TEMPERATURES. JRNL REF J.MOL.BIOL. V. 218 195 1991 JRNL REFN ISSN 0022-2836 JRNL PMID 2002503 JRNL DOI 10.1016/0022-2836(91)90884-9

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH G.D.KREY,E.F.VANIN,R.P.SWENSON REMARK 1 TITL CLONING, NUCLEOTIDE SEQUENCE, AND EXPRESSION OF REMARK 1 TITL 2 THE FLAVODOXIN GENE FROM DISULFOVIBRIO VULGARIS REMARK 1 TITL 3 (HILDENBOROUGH) REMARK 1 REF J.BIOL.CHEM. V. 218 15436 1988 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 2 REMARK 1 AUTH K.D.WATENPAUGH,L.C.SIEKER,L.H.JENSEN REMARK 1 TITL A CRYSTALLOGRAPHIC STRUCTURAL STUDY OF THE REMARK 1 TITL 2 OXIDATION STATES OF DESULFOVIBRIO VULGARIS REMARK 1 TITL 3 FLAVODOXIN REMARK 1 EDIT T.P.SINGER REMARK 1 REF FLAVINS AND FLAVOPROTEINS 405 1976 REMARK 1 PUBL ELSEVIER SCIENTIFIC PUBL.CO.,AMSTERDAM REMARK 1 REFN REMARK 1 REFERENCE 3 REMARK 1 AUTH K.D.WATENPAUGH,L.C.SIEKER,L.H.JENSEN REMARK 1 TITL FLAVIN MONONUCLEOTIDE CONFORMATION AND ENVIRONMENT REMARK 1 TITL 2 IN FLAVODOXIN FROM DESULFOVIBRIO VULGARIS REMARK 1 EDIT M.SUNDARALINGAM, S.T.RAO REMARK 1 REF STRUCTURE AND CONFORMATION 431 1975 REMARK 1 REF 2 OF NUCLEIC ACIDS AND REMARK 1 REF 3 PROTEIN-NUCLEIC ACID REMARK 1 REF 4 INTERACTIONS : PROCEEDINGS REMARK 1 REF 5 OF THE FOURTH ANNUAL HARRY REMARK 1 REF 6 STEENBOCK SYMPOSIUM, JUNE REMARK 1 REF 7 16-19, 1974, MADISON, REMARK 1 REF 8 WISCONSIN REMARK 1 PUBL UNIVERSITY PARK PRESS,BALTIMORE MD. REMARK 1 REFN REMARK 1 REFERENCE 4 REMARK 1 AUTH K.D.WATENPAUGH,L.C.SIEKER,L.H.JENSEN REMARK 1 TITL THE BINDING OF RIBOFLAVIN-5-PHOSPHATE IN A REMARK 1 TITL 2 FLAVOPROTEIN. FLAVODOXIN AT 2.0-ANGSTROMS REMARK 1 TITL 3 RESOLUTION REMARK 1 REF PROC.NATL.ACAD.SCI.USA V. 70 3857 1973 REMARK 1 REFN ISSN 0027-8424 REMARK 1 REFERENCE 5 REMARK 1 AUTH K.D.WATENPAUGH,L.C.SIEKER,L.H.JENSEN,J.LEGALL, REMARK 1 AUTH 2 M.DUBOURDIEU REMARK 1 TITL STRUCTURE OF THE OXIDIZED FORM OF A FLAVODOXIN AT REMARK 1 TITL 2 2.5-ANGSTROMS RESOLUTION. RESOLUTION OF THE PHASE REMARK 1 TITL 3 AMBIGUITY BY ANOMALOUS SCATTERING REMARK 1 REF PROC.NATL.ACAD.SCI.USA V. 69 3185 1972 REMARK 1 REFN ISSN 0027-8424

REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : NULL REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.203 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1102 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 31 REMARK 3 SOLVENT ATOMS : 226 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.034 ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL 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 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 4FX2 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL 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 (%): 58.24 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.95 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y+1/2,X+1/2,Z+3/4 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/4 REMARK 290 5555 -X+1/2,Y+1/2,-Z+3/4 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/4 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z+1/2 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 69.81000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 25.72000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 25.72000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 104.71500 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 25.72000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 25.72000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 34.90500 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 25.72000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 25.72000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 104.71500 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 25.72000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 25.72000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 34.90500 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 69.81000 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 150 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 O HOH A 340 O HOH A 344 1.60 REMARK 500 OE1 GLU A 25 O HOH A 293 1.80 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 TYR A 17 CG TYR A 17 CD1 -0.091 REMARK 500 GLU A 20 CD GLU A 20 OE1 -0.068 REMARK 500 GLU A 20 CD GLU A 20 OE2 -0.083 REMARK 500 GLU A 25 CD GLU A 25 OE1 0.067 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 LEU A 5 CB - CG - CD2 ANGL. DEV. = -11.3 DEGREES REMARK 500 GLU A 16 OE1 - CD - OE2 ANGL. DEV. = -16.3 DEGREES REMARK 500 GLU A 16 CG - CD - OE2 ANGL. DEV. = 12.1 DEGREES REMARK 500 TYR A 17 CB - CG - CD2 ANGL. DEV. = -6.2 DEGREES REMARK 500 TYR A 17 CB - CG - CD1 ANGL. DEV. = 9.1 DEGREES REMARK 500 TYR A 17 CG - CD1 - CE1 ANGL. DEV. = 5.7 DEGREES REMARK 500 THR A 21 CA - CB - CG2 ANGL. DEV. = 9.7 DEGREES REMARK 500 ARG A 24 CD - NE - CZ ANGL. DEV. = 10.7 DEGREES REMARK 500 ARG A 24 NE - CZ - NH1 ANGL. DEV. = 8.1 DEGREES REMARK 500 ARG A 24 NE - CZ - NH2 ANGL. DEV. = -6.1 DEGREES REMARK 500 ASP A 28 CB - CG - OD1 ANGL. DEV. = 5.7 DEGREES REMARK 500 ASP A 28 CB - CG - OD2 ANGL. DEV. = -15.8 DEGREES REMARK 500 ALA A 27 O - C - N ANGL. DEV. = -9.9 DEGREES REMARK 500 GLU A 32 OE1 - CD - OE2 ANGL. DEV. = -7.8 DEGREES REMARK 500 ASP A 34 CB - CA - C ANGL. DEV. = 14.7 DEGREES REMARK 500 ARG A 36 NH1 - CZ - NH2 ANGL. DEV. = -7.1 DEGREES REMARK 500 ALA A 39 O - C - N ANGL. DEV. = -11.2 DEGREES REMARK 500 VAL A 41 CB - CA - C ANGL. DEV. = 12.3 DEGREES REMARK 500 VAL A 41 CA - CB - CG1 ANGL. DEV. = 11.4 DEGREES REMARK 500 SER A 58 N - CA - CB ANGL. DEV. = 10.0 DEGREES REMARK 500 ASP A 63 CB - CG - OD2 ANGL. DEV. = -7.7 DEGREES REMARK 500 LEU A 67 CB - CG - CD1 ANGL. DEV. = 13.2 DEGREES REMARK 500 LEU A 67 CB - CG - CD2 ANGL. DEV. = -10.5 DEGREES REMARK 500 ASP A 69 CB - CA - C ANGL. DEV. = 14.4 DEGREES REMARK 500 ASP A 69 CB - CG - OD2 ANGL. DEV. = -10.2 DEGREES REMARK 500 ASP A 70 CB - CG - OD1 ANGL. DEV. = -12.3 DEGREES REMARK 500 ASP A 76 CB - CG - OD1 ANGL. DEV. = 10.5 DEGREES REMARK 500 ASP A 76 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 GLU A 79 CG - CD - OE2 ANGL. DEV. = 12.2 DEGREES REMARK 500 GLY A 82 C - N - CA ANGL. DEV. = 21.0 DEGREES REMARK 500 GLN A 84 CG - CD - OE1 ANGL. DEV. = -15.7 DEGREES REMARK 500 GLN A 84 CG - CD - NE2 ANGL. DEV. = 14.5 DEGREES REMARK 500 ARG A 86 CA - CB - CG ANGL. DEV. = 14.8 DEGREES REMARK 500 ARG A 86 NE - CZ - NH1 ANGL. DEV. = 7.8 DEGREES REMARK 500 ARG A 86 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 LYS A 87 C - N - CA ANGL. DEV. = 17.0 DEGREES REMARK 500 PHE A 91 CB - CG - CD2 ANGL. DEV. = -4.3 DEGREES REMARK 500 ASP A 95 CB - CG - OD2 ANGL. DEV. = 9.4 DEGREES REMARK 500 TYR A 98 CB - CG - CD2 ANGL. DEV. = -7.2 DEGREES REMARK 500 TYR A 98 CB - CG - CD1 ANGL. DEV. = 4.4 DEGREES REMARK 500 GLU A 99 OE1 - CD - OE2 ANGL. DEV. = 9.0 DEGREES REMARK 500 GLU A 99 CG - CD - OE2 ANGL. DEV. = -13.0 DEGREES REMARK 500 TYR A 100 CB - CG - CD2 ANGL. DEV. = -6.7 DEGREES REMARK 500 TYR A 100 CB - CG - CD1 ANGL. DEV. = 4.8 DEGREES REMARK 500 GLU A 109 N - CA - CB ANGL. DEV. = 14.1 DEGREES REMARK 500 GLU A 109 CA - CB - CG ANGL. DEV. = 14.4 DEGREES REMARK 500 GLU A 109 CB - CG - CD ANGL. DEV. = 16.6 DEGREES REMARK 500 GLU A 109 OE1 - CD - OE2 ANGL. DEV. = -12.1 DEGREES REMARK 500 GLU A 109 CG - CD - OE1 ANGL. DEV. = 19.6 DEGREES REMARK 500 GLU A 110 OE1 - CD - OE2 ANGL. DEV. = 8.1 DEGREES REMARK 500 REMARK 500 THIS ENTRY HAS 73 ANGLE DEVIATIONS. 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 ALA A 39 -36.83 -36.07 REMARK 500 CYS A 102 50.65 34.43 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 ARG A 36 0.14 SIDE_CHAIN REMARK 500 PHE A 75 0.07 SIDE_CHAIN 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, 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 VAL A 53 10.27 REMARK 500 PHE A 101 -11.53 REMARK 500 ALA A 107 12.53 REMARK 500 LEU A 115 10.74 REMARK 500 ASP A 122 -10.49 REMARK 500 LEU A 124 -11.36 REMARK 500 ASP A 129 10.33 REMARK 500 ASP A 135 12.05 REMARK 500 ALA A 141 -10.71 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 175 DISTANCE = 8.57 ANGSTROMS REMARK 525 HOH A 252 DISTANCE = 6.49 ANGSTROMS REMARK 525 HOH A 282 DISTANCE = 7.12 ANGSTROMS REMARK 525 HOH A 301 DISTANCE = 5.60 ANGSTROMS REMARK 525 HOH A 303 DISTANCE = 5.07 ANGSTROMS REMARK 525 HOH A 310 DISTANCE = 5.27 ANGSTROMS REMARK 525 HOH A 313 DISTANCE = 7.27 ANGSTROMS REMARK 525 HOH A 314 DISTANCE = 5.57 ANGSTROMS REMARK 525 HOH A 317 DISTANCE = 9.47 ANGSTROMS REMARK 525 HOH A 319 DISTANCE = 6.70 ANGSTROMS REMARK 525 HOH A 332 DISTANCE = 5.92 ANGSTROMS REMARK 525 HOH A 334 DISTANCE = 5.42 ANGSTROMS REMARK 525 HOH A 335 DISTANCE = 5.38 ANGSTROMS REMARK 525 HOH A 337 DISTANCE = 5.92 ANGSTROMS REMARK 525 HOH A 340 DISTANCE = 5.56 ANGSTROMS REMARK 525 HOH A 341 DISTANCE = 5.27 ANGSTROMS REMARK 525 HOH A 342 DISTANCE = 9.27 ANGSTROMS REMARK 525 HOH A 343 DISTANCE = 7.42 ANGSTROMS REMARK 525 HOH A 344 DISTANCE = 6.51 ANGSTROMS REMARK 525 HOH A 345 DISTANCE = 9.47 ANGSTROMS REMARK 525 HOH A 349 DISTANCE = 7.40 ANGSTROMS REMARK 525 HOH A 350 DISTANCE = 14.36 ANGSTROMS REMARK 525 HOH A 351 DISTANCE = 10.75 ANGSTROMS REMARK 525 HOH A 353 DISTANCE = 9.55 ANGSTROMS REMARK 525 HOH A 355 DISTANCE = 6.04 ANGSTROMS REMARK 525 HOH A 361 DISTANCE = 8.97 ANGSTROMS REMARK 525 HOH A 364 DISTANCE = 7.14 ANGSTROMS REMARK 525 HOH A 374 DISTANCE = 8.79 ANGSTROMS REMARK 525 HOH A 375 DISTANCE = 8.49 ANGSTROMS

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 149

REMARK 999 REMARK 999 SEQUENCE REMARK 999 REMARK 999 SEQUENCE ADVISORY NOTICE: REMARK 999 DIFFERENCE BETWEEN SWISS-PROT AND PDB SEQUENCE. REMARK 999 REMARK 999 SWISS-PROT ENTRY NAME: FLAV_DESVH REMARK 999 REMARK 999 SWISS-PROT RESIDUE PDB SEQRES REMARK 999 NAME NUMBER NAME CHAIN SEQ/INSERT CODE REMARK 999 MET 1 MISSING REMARK 999 PRO 2 ALA 2 REMARK 999 REMARK 999 WHEN THE PROTEIN SAMPLE WAS PREPARED, BY RECOMBINANT REMARK 999 METHODS, PRO 1 WAS REPLACED BY ALA. THIS CHANGE WAS NEEDED REMARK 999 TO OBTAIN A SAMPLE OF SUFFICIENT QUANTITY. MET 1 NEVER REMARK 999 APPEARS IN THE ISOLATED (WILD-TYPE) OR THIS RECOMBINANT REMARK 999 SAMPLE.

DBREF 4FX2 A 3 148 UNP P00323 FLAV_DESVH 3 148

SEQRES 1 A 147 ALA LYS ALA LEU ILE VAL TYR GLY SER THR THR GLY ASN SEQRES 2 A 147 THR GLU TYR THR ALA GLU THR ILE ALA ARG GLU LEU ALA SEQRES 3 A 147 ASP ALA GLY TYR GLU VAL ASP SER ARG ASP ALA ALA SER SEQRES 4 A 147 VAL GLU ALA GLY GLY LEU PHE GLU GLY PHE ASP LEU VAL SEQRES 5 A 147 LEU LEU GLY CYS SER THR TRP GLY ASP ASP SER ILE GLU SEQRES 6 A 147 LEU GLN ASP ASP PHE ILE PRO LEU PHE ASP SER LEU GLU SEQRES 7 A 147 GLU THR GLY ALA GLN GLY ARG LYS VAL ALA CYS PHE GLY SEQRES 8 A 147 CYS GLY ASP SER SER TYR GLU TYR PHE CYS GLY ALA VAL SEQRES 9 A 147 ASP ALA ILE GLU GLU LYS LEU LYS ASN LEU GLY ALA GLU SEQRES 10 A 147 ILE VAL GLN ASP GLY LEU ARG ILE ASP GLY ASP PRO ARG SEQRES 11 A 147 ALA ALA ARG ASP ASP ILE VAL GLY TRP ALA HIS ASP VAL SEQRES 12 A 147 ARG GLY ALA ILE

HET FMN A 149 31

HETNAM FMN FLAVIN MONONUCLEOTIDE

HETSYN FMN RIBOFLAVIN MONOPHOSPHATE

FORMUL 2 FMN C17 H21 N4 O9 P FORMUL 3 HOH *226(H2 O)

HELIX 1 1 GLY A 13 ASP A 28 1 16 HELIX 2 2 ASP A 70 THR A 81 1 12 HELIX 3 3 GLY A 103 LEU A 115 1 13 HELIX 4 4 ALA A 132 ILE A 148 1 17

SHEET 1 S1 5 TYR A 31 ALA A 38 0 SHEET 2 S1 5 ALA A 2 SER A 10 1 N ILE A 6 O ASP A 34 SHEET 3 S1 5 ASP A 51 TRP A 60 1 N GLY A 56 O VAL A 7 SHEET 4 S1 5 GLY A 85 ASP A 95 1 N ALA A 89 O VAL A 53 SHEET 5 S1 5 VAL A 120 ASP A 129 1 N VAL A 120 O VAL A 88

SITE 1 AC1 21 SER A 10 THR A 11 THR A 12 GLY A 13 SITE 2 AC1 21 ASN A 14 THR A 15 ASP A 28 SER A 58 SITE 3 AC1 21 THR A 59 TRP A 60 GLY A 61 CYS A 93 SITE 4 AC1 21 GLY A 94 ASP A 95 TYR A 98 TYR A 100 SITE 5 AC1 21 PHE A 101 CYS A 102 HOH A 157 HOH A 179 SITE 6 AC1 21 HOH A 197

CRYST1 51.440 51.440 139.620 90.00 90.00 90.00 P 43 21 2 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 0.019440 0.000000 0.000000 0.00000

SCALE2 0.000000 0.019440 0.000000 0.00000

SCALE3 0.000000 0.000000 0.007162 0.00000