HEADER UNKNOWN FUNCTION 18-DEC-03 1RXK TITLE CRYSTAL STRUCTURE OF STREPTAVIDIN MUTANT (M3) A COMBINATION OF M1+M2 COMPND MOL_ID: 1; COMPND 2 MOLECULE: STREPTAVIDIN; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES; COMPND 6 OTHER_DETAILS: STREPTAVIDIN MUTANT M3 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES AVIDINII; SOURCE 3 ORGANISM_TAXID: 1895; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET-21A KEYWDS AVIDIN, STREPTAVIDIN, PSEUDO ENZYMATIC ACTIVITY, UNKNOWN FUNCTION EXPDTA X-RAY DIFFRACTION AUTHOR Y.EISENBERG-DOMOVICH,Y.PAZY,O.NIR,B.RABOY,E.A.BAYER,M.WILCHEK, AUTHOR 2 O.LIVNAH REVDAT 5 14-FEB-24 1RXK 1 REMARK REVDAT 4 27-OCT-21 1RXK 1 REMARK SEQADV REVDAT 3 13-JUL-11 1RXK 1 VERSN REVDAT 2 24-FEB-09 1RXK 1 VERSN REVDAT 1 11-MAY-04 1RXK 0 JRNL AUTH Y.EISENBERG-DOMOVICH,Y.PAZY,O.NIR,B.RABOY,E.A.BAYER, JRNL AUTH 2 M.WILCHEK,O.LIVNAH JRNL TITL STRUCTURAL ELEMENTS RESPONSIBLE FOR CONVERSION OF JRNL TITL 2 STREPTAVIDIN TO A PSEUDOENZYME. JRNL REF PROC.NATL.ACAD.SCI.USA V. 101 5916 2004 JRNL REFN ISSN 0027-8424 JRNL PMID 15079055 JRNL DOI 10.1073/PNAS.0308541101 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.24 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 56.80 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 96.2 REMARK 3 NUMBER OF REFLECTIONS : 30020 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) : 0.202 REMARK 3 R VALUE (WORKING SET) : 0.200 REMARK 3 FREE R VALUE : 0.239 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1607 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.70 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.75 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2157 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2270 REMARK 3 BIN FREE R VALUE SET COUNT : 112 REMARK 3 BIN FREE R VALUE : 0.2790 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1835 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 50 REMARK 3 SOLVENT ATOMS : 153 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.87 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.09000 REMARK 3 B22 (A**2) : -1.40000 REMARK 3 B33 (A**2) : 1.31000 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.107 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.109 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.066 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.005 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.957 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.936 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1933 ; 0.016 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): 1632 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2641 ; 1.647 ; 1.917 REMARK 3 BOND ANGLES OTHERS (DEGREES): 3774 ; 0.863 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 241 ; 7.404 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 293 ; 0.115 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2180 ; 0.007 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 414 ; 0.002 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 288 ; 0.187 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 1852 ; 0.259 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): 1108 ; 0.083 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 95 ; 0.178 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 13 ; 0.120 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 54 ; 0.298 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 13 ; 0.176 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 1191 ; 1.126 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1891 ; 1.996 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 742 ; 2.790 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 750 ; 4.426 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 1RXK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-APR-04. REMARK 100 THE DEPOSITION ID IS D_1000021120. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-DEC-02 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 8.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : ID14-4 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.003 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 31858 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 56.800 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.0 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) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.73 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.6 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.79 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.78 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.5M AS, 0.1M TRIS-HCL, PH 8.6, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 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 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 45.26600 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 45.26600 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 40.16750 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 40.78950 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 40.16750 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 40.78950 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 45.26600 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 40.16750 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 40.78950 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 45.26600 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 40.16750 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 40.78950 REMARK 290 SMTRY3 8 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: THE SECOND PART OF THE BIOLOGICAL ASSEMBLY IS GENERATED REMARK 300 BY THE TWO FOLD AXIS: -X, Y, -Z+1/2 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 12000 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 20050 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -21.0 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 80.33500 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 45.26600 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 B 574 LIES ON A SPECIAL POSITION. 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 GLU A 14 REMARK 465 VAL A 47 REMARK 465 THR A 48 REMARK 465 ALA A 49 REMARK 465 THR A 50 REMARK 465 PRO B 135 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 GLU A 116 CG CD OE1 OE2 REMARK 470 GLU B 14 CG CD OE1 OE2 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 TRP A 79 50.33 -90.33 REMARK 500 GLU A 101 64.05 -114.20 REMARK 500 THR B 48 -70.15 -123.57 REMARK 500 THR B 66 46.84 -104.98 REMARK 500 TRP B 79 45.87 -83.07 REMARK 500 GLU B 101 59.67 -113.48 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 GLU B 14 ALA B 15 147.26 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BNI A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BNI B 502 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1IJ8 RELATED DB: PDB REMARK 900 RELATED ID: 1I9H RELATED DB: PDB REMARK 900 RELATED ID: 1RXH RELATED DB: PDB REMARK 900 RELATED ID: 1RXJ RELATED DB: PDB REMARK 999 REMARK 999 SEQUENCE REMARK 999 IN THIS STREPTAVIDIN MUTANT (M3) THE L3,4 LOOP REMARK 999 (SEQUENCE: GNAES) WAS SUBSTITUTED WITH THE LOOP REMARK 999 FROM AVIDIN (SEQUENCE: TATSNEIK) IN ADDITION TO REMARK 999 THE MUTAION L124R DBREF 1RXK A 14 135 UNP P22629 SAV_STRAV 38 159 DBREF 1RXK B 14 135 UNP P22629 SAV_STRAV 38 159 SEQADV 1RXK THR A 48 UNP P22629 72 SEE REMARK 999 SEQADV 1RXK ALA A 49 UNP P22629 73 SEE REMARK 999 SEQADV 1RXK THR A 50 UNP P22629 74 SEE REMARK 999 SEQADV 1RXK SER A 50A UNP P22629 GLY 75 SEE REMARK 999 SEQADV 1RXK ASN A 50B UNP P22629 ASN 76 SEE REMARK 999 SEQADV 1RXK GLU A 50C UNP P22629 ALA 77 SEE REMARK 999 SEQADV 1RXK ILE A 51 UNP P22629 GLU 78 SEE REMARK 999 SEQADV 1RXK LYS A 52 UNP P22629 SER 79 SEE REMARK 999 SEQADV 1RXK ARG A 124 UNP P22629 LEU 148 ENGINEERED MUTATION SEQADV 1RXK THR B 48 UNP P22629 72 SEE REMARK 999 SEQADV 1RXK ALA B 49 UNP P22629 73 SEE REMARK 999 SEQADV 1RXK THR B 50 UNP P22629 74 SEE REMARK 999 SEQADV 1RXK SER B 50A UNP P22629 GLY 75 SEE REMARK 999 SEQADV 1RXK ASN B 50B UNP P22629 ASN 76 SEE REMARK 999 SEQADV 1RXK GLU B 50C UNP P22629 ALA 77 SEE REMARK 999 SEQADV 1RXK ILE B 51 UNP P22629 GLU 78 SEE REMARK 999 SEQADV 1RXK LYS B 52 UNP P22629 SER 79 SEE REMARK 999 SEQADV 1RXK ARG B 124 UNP P22629 LEU 148 ENGINEERED MUTATION SEQRES 1 A 125 GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU GLY SEQRES 2 A 125 SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA LEU SEQRES 3 A 125 THR GLY THR TYR GLU SER ALA VAL THR ALA THR SER ASN SEQRES 4 A 125 GLU ILE LYS ARG TYR VAL LEU THR GLY ARG TYR ASP SER SEQRES 5 A 125 ALA PRO ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP SEQRES 6 A 125 THR VAL ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER SEQRES 7 A 125 ALA THR THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU SEQRES 8 A 125 ALA ARG ILE ASN THR GLN TRP LEU LEU THR SER GLY THR SEQRES 9 A 125 THR GLU ALA ASN ALA TRP LYS SER THR ARG VAL GLY HIS SEQRES 10 A 125 ASP THR PHE THR LYS VAL LYS PRO SEQRES 1 B 125 GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU GLY SEQRES 2 B 125 SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA LEU SEQRES 3 B 125 THR GLY THR TYR GLU SER ALA VAL THR ALA THR SER ASN SEQRES 4 B 125 GLU ILE LYS ARG TYR VAL LEU THR GLY ARG TYR ASP SER SEQRES 5 B 125 ALA PRO ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP SEQRES 6 B 125 THR VAL ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER SEQRES 7 B 125 ALA THR THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU SEQRES 8 B 125 ALA ARG ILE ASN THR GLN TRP LEU LEU THR SER GLY THR SEQRES 9 B 125 THR GLU ALA ASN ALA TRP LYS SER THR ARG VAL GLY HIS SEQRES 10 B 125 ASP THR PHE THR LYS VAL LYS PRO HET BNI A 501 25 HET BNI B 502 25 HETNAM BNI 5-(2-OXO-HEXAHYDRO-THIENO[3,4-D]IMIDAZOL-6-YL)- HETNAM 2 BNI PENTANOIC ACID (4-NITRO-PHENYL)-AMIDE HETSYN BNI BIOTINYL P-NITROANILINE FORMUL 3 BNI 2(C16 H20 N4 O4 S) FORMUL 5 HOH *153(H2 O) HELIX 1 1 SER A 50A ILE A 51 5 4 HELIX 2 2 THR A 115 LYS A 121 5 7 HELIX 3 3 SER B 50A ILE B 51 5 4 HELIX 4 4 THR B 115 LYS B 121 5 7 SHEET 1 A 9 GLY A 19 ASN A 23 0 SHEET 2 A 9 THR A 28 ALA A 33 -1 O VAL A 31 N GLY A 19 SHEET 3 A 9 ALA A 38 GLU A 44 -1 O GLU A 44 N THR A 28 SHEET 4 A 9 ARG A 53 TYR A 60 -1 O TYR A 54 N TYR A 43 SHEET 5 A 9 THR A 71 LYS A 80 -1 O THR A 76 N THR A 57 SHEET 6 A 9 ASN A 85 VAL A 97 -1 O THR A 90 N VAL A 77 SHEET 7 A 9 ARG A 103 SER A 112 -1 O GLN A 107 N SER A 93 SHEET 8 A 9 THR A 123 THR A 131 -1 O PHE A 130 N ILE A 104 SHEET 9 A 9 GLY A 19 ASN A 23 -1 N TYR A 22 O THR A 131 SHEET 1 B 9 GLY B 19 TYR B 22 0 SHEET 2 B 9 THR B 28 ALA B 33 -1 O PHE B 29 N TRP B 21 SHEET 3 B 9 ALA B 38 GLU B 44 -1 O GLU B 44 N THR B 28 SHEET 4 B 9 ARG B 53 TYR B 60 -1 O TYR B 54 N TYR B 43 SHEET 5 B 9 THR B 71 LYS B 80 -1 O THR B 76 N THR B 57 SHEET 6 B 9 ASN B 85 VAL B 97 -1 O GLY B 94 N LEU B 73 SHEET 7 B 9 ARG B 103 SER B 112 -1 O ARG B 103 N VAL B 97 SHEET 8 B 9 THR B 123 THR B 131 -1 O PHE B 130 N ILE B 104 SHEET 9 B 9 GLY B 19 TYR B 22 -1 N TYR B 22 O THR B 131 SITE 1 AC1 13 ASN A 23 LEU A 25 SER A 27 TYR A 43 SITE 2 AC1 13 SER A 45 TRP A 79 SER A 88 THR A 90 SITE 3 AC1 13 TRP A 108 ARG A 124 ASP A 128 TRP B 120 SITE 4 AC1 13 LYS B 121 SITE 1 AC2 14 TRP A 120 LYS A 121 ASN B 23 LEU B 25 SITE 2 AC2 14 SER B 27 TYR B 43 TRP B 79 SER B 88 SITE 3 AC2 14 THR B 90 TRP B 108 ARG B 124 ASP B 128 SITE 4 AC2 14 HOH B 508 HOH B 572 CRYST1 80.335 81.579 90.532 90.00 90.00 90.00 C 2 2 21 16 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 0.012448 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012258 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011046 0.00000