HEADER TOXIN 24-AUG-05 2ATB TITLE TRIPLE MUTANT 8D9D10V OF SCORPION TOXIN LQH-ALPHA-IT COMPND MOL_ID: 1; COMPND 2 MOLECULE: NEUROTOXIN ALPHA-IT; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: LEIURUS QUINQUESTRIATUS; SOURCE 3 ORGANISM_COMMON: EGYPTIAN SCORPION; SOURCE 4 ORGANISM_TAXID: 6883; SOURCE 5 TISSUE: VENOM GLAND; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET-11 KEYWDS ALPHA TOXIN, MUATION, SCORPION, TOXIN EXPDTA X-RAY DIFFRACTION AUTHOR R.KAHN,I.KARBAT,M.GUREVITZ,F.FROLOW REVDAT 5 25-OCT-23 2ATB 1 REMARK REVDAT 4 10-NOV-21 2ATB 1 REMARK SEQADV REVDAT 3 11-OCT-17 2ATB 1 REMARK REVDAT 2 24-FEB-09 2ATB 1 VERSN REVDAT 1 05-SEP-06 2ATB 0 JRNL AUTH R.KAHN,I.KARBAT,M.GUREVITZ,F.FROLOW JRNL TITL X-RAY STRUCTURES OF LQH-ALPHA-IT AND LQH-ALPHA-IT8D9D10V JRNL TITL 2 MUTANT JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 40.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 29202 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) : 0.129 REMARK 3 R VALUE (WORKING SET) : 0.127 REMARK 3 FREE R VALUE : 0.170 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1484 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) : 1.60 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.64 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1978 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.52 REMARK 3 BIN R VALUE (WORKING SET) : 0.1720 REMARK 3 BIN FREE R VALUE SET COUNT : 105 REMARK 3 BIN FREE R VALUE : 0.2450 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1016 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 17 REMARK 3 SOLVENT ATOMS : 211 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 19.48 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.72000 REMARK 3 B22 (A**2) : 0.72000 REMARK 3 B33 (A**2) : -1.44000 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): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): 0.059 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.039 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.489 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.975 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.966 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1071 ; 0.013 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 736 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1452 ; 1.306 ; 1.943 REMARK 3 BOND ANGLES OTHERS (DEGREES): 1744 ; 0.953 ; 3.018 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 129 ; 6.342 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 52 ;27.993 ;23.462 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 155 ;13.374 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 8 ;11.804 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 141 ; 0.086 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1216 ; 0.005 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 232 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 205 ; 0.197 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 772 ; 0.200 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 528 ; 0.184 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): 578 ; 0.084 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 98 ; 0.234 ; 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): 9 ; 0.071 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 68 ; 0.237 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 51 ; 0.327 ; 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): 830 ; 6.774 ; 3.000 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 267 ; 3.265 ; 3.000 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1033 ; 6.994 ; 5.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 524 ;12.471 ; 7.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 418 ;14.040 ;10.000 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): 2334 ; 6.318 ; 3.000 REMARK 3 SPHERICITY; FREE ATOMS (A**2): 212 ;31.966 ; 3.000 REMARK 3 SPHERICITY; BONDED ATOMS (A**2): 1777 ; 9.444 ; 3.000 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 : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2ATB COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 26-AUG-05. REMARK 100 THE DEPOSITION ID IS D_1000034286. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-DEC-03 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 4.6 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) : 0.933 REMARK 200 MONOCHROMATOR : MIRRORS REMARK 200 OPTICS : MIRRORS 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 : 29230 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.600 REMARK 200 RESOLUTION RANGE LOW (A) : 65.510 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.09300 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) : 1.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.63 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.5 REMARK 200 DATA REDUNDANCY IN SHELL : 6.80 REMARK 200 R MERGE FOR SHELL (I) : 0.72200 REMARK 200 R SYM FOR SHELL (I) : 0.05200 REMARK 200 FOR SHELL : 2.300 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: 2ASC REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 66.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.67 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.01M COBALTOUS CHLORID HEXAHYDRATE, REMARK 280 0.1M SODIUM ACETATE TRIHYDRATE, 1M OF 1,6 HEXNEDIOL, PH 4.6, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 41 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 3555 -Y,X+1/2,Z+1/4 REMARK 290 4555 Y+1/2,-X,Z+3/4 REMARK 290 5555 -X+1/2,Y,-Z+3/4 REMARK 290 6555 X,-Y+1/2,-Z+1/4 REMARK 290 7555 Y+1/2,X+1/2,-Z+1/2 REMARK 290 8555 -Y,-X,-Z REMARK 290 9555 X+1/2,Y+1/2,Z+1/2 REMARK 290 10555 -X,-Y,Z REMARK 290 11555 -Y+1/2,X,Z+3/4 REMARK 290 12555 Y,-X+1/2,Z+1/4 REMARK 290 13555 -X,Y+1/2,-Z+1/4 REMARK 290 14555 X+1/2,-Y,-Z+3/4 REMARK 290 15555 Y,X,-Z REMARK 290 16555 -Y+1/2,-X+1/2,-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 35.45350 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 35.45350 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 85.34050 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 42.67025 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 35.45350 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 128.01075 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 128.01075 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 35.45350 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 42.67025 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 35.45350 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 85.34050 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 0.00000 REMARK 290 SMTRY1 9 1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY2 9 0.000000 1.000000 0.000000 35.45350 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 85.34050 REMARK 290 SMTRY1 10 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 10 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 11 0.000000 -1.000000 0.000000 35.45350 REMARK 290 SMTRY2 11 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 1.000000 128.01075 REMARK 290 SMTRY1 12 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 12 -1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY3 12 0.000000 0.000000 1.000000 42.67025 REMARK 290 SMTRY1 13 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 13 0.000000 1.000000 0.000000 35.45350 REMARK 290 SMTRY3 13 0.000000 0.000000 -1.000000 42.67025 REMARK 290 SMTRY1 14 1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY2 14 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 14 0.000000 0.000000 -1.000000 128.01075 REMARK 290 SMTRY1 15 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 15 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 15 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 16 0.000000 -1.000000 0.000000 35.45350 REMARK 290 SMTRY2 16 -1.000000 0.000000 0.000000 35.45350 REMARK 290 SMTRY3 16 0.000000 0.000000 -1.000000 85.34050 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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: BIOLOGICALLY ACTIVE IN MONOMERIC FORM 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 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 78 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 97 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 647 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 652 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 672 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 B 614 O HOH B 687 1.92 REMARK 500 O HOH A 88 O HOH A 166 2.09 REMARK 500 O HOH B 626 O HOH B 671 2.18 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 O HOH B 636 O HOH B 698 16555 1.86 REMARK 500 O HOH B 624 O HOH B 624 10665 1.93 REMARK 500 O HOH B 689 O HOH B 699 10665 2.04 REMARK 500 O HOH A 114 O HOH B 699 4464 2.11 REMARK 500 O HOH A 85 O HOH A 85 10565 2.14 REMARK 500 O HOH B 681 O HOH B 704 10665 2.15 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 NO3 A 66 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO3 B 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE EDO B 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE EDO B 601 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2ASC RELATED DB: PDB REMARK 900 THE SAME PROTEIN COMPLEXED WITH DRUG REMARK 900 RELATED ID: 1LQH RELATED DB: PDB REMARK 900 INSECTICIDAL SCORPION TOXIN ISOLATED FROM THE VENOM OF SCORPION REMARK 900 LEIURUS QUINQUESTRIATIS HEBRAEUS, STRUCTURE SOLVED BY NMR DBREF 2ATB A 2 65 UNP P17728 SCXA_LEIQH 20 82 DBREF 2ATB B 2 65 UNP P17728 SCXA_LEIQH 20 82 SEQADV 2ATB MET A 1 UNP P17728 INITIATING METHIONINE SEQADV 2ATB ASP A 9 UNP P17728 LYS 8 ENGINEERED MUTATION SEQADV 2ATB ASP A 10 UNP P17728 ASN 9 ENGINEERED MUTATION SEQADV 2ATB VAL A 11 UNP P17728 TYR 10 ENGINEERED MUTATION SEQADV 2ATB MET B 1 UNP P17728 INITIATING METHIONINE SEQADV 2ATB ASP B 9 UNP P17728 LYS 8 ENGINEERED MUTATION SEQADV 2ATB ASP B 10 UNP P17728 ASN 9 ENGINEERED MUTATION SEQADV 2ATB VAL B 11 UNP P17728 TYR 10 ENGINEERED MUTATION SEQRES 1 A 65 MET VAL ARG ASP ALA TYR ILE ALA ASP ASP VAL ASN CYS SEQRES 2 A 65 VAL TYR GLU CYS PHE ARG ASP ALA TYR CYS ASN GLU LEU SEQRES 3 A 65 CYS THR LYS ASN GLY ALA SER SER GLY TYR CYS GLN TRP SEQRES 4 A 65 ALA GLY LYS TYR GLY ASN ALA CYS TRP CYS TYR ALA LEU SEQRES 5 A 65 PRO ASP ASN VAL PRO ILE ARG VAL PRO GLY LYS CYS ARG SEQRES 1 B 65 MET VAL ARG ASP ALA TYR ILE ALA ASP ASP VAL ASN CYS SEQRES 2 B 65 VAL TYR GLU CYS PHE ARG ASP ALA TYR CYS ASN GLU LEU SEQRES 3 B 65 CYS THR LYS ASN GLY ALA SER SER GLY TYR CYS GLN TRP SEQRES 4 B 65 ALA GLY LYS TYR GLY ASN ALA CYS TRP CYS TYR ALA LEU SEQRES 5 B 65 PRO ASP ASN VAL PRO ILE ARG VAL PRO GLY LYS CYS ARG HET NO3 A 66 4 HET CL B 301 1 HET NO3 B 401 4 HET EDO B 501 4 HET EDO B 601 8 HETNAM NO3 NITRATE ION HETNAM CL CHLORIDE ION HETNAM EDO 1,2-ETHANEDIOL HETSYN EDO ETHYLENE GLYCOL FORMUL 3 NO3 2(N O3 1-) FORMUL 4 CL CL 1- FORMUL 6 EDO 2(C2 H6 O2) FORMUL 8 HOH *211(H2 O) HELIX 1 1 ARG A 19 ASN A 30 1 12 HELIX 2 2 ARG B 19 ASN B 30 1 12 SHEET 1 A 3 VAL A 2 TYR A 6 0 SHEET 2 A 3 GLY A 44 PRO A 53 -1 O CYS A 49 N ALA A 5 SHEET 3 A 3 SER A 34 GLY A 41 -1 N SER A 34 O TYR A 50 SHEET 1 B 3 VAL B 2 TYR B 6 0 SHEET 2 B 3 GLY B 44 PRO B 53 -1 O CYS B 49 N ALA B 5 SHEET 3 B 3 SER B 34 GLY B 41 -1 N TYR B 36 O TRP B 48 SSBOND 1 CYS A 13 CYS A 64 1555 1555 2.01 SSBOND 2 CYS A 17 CYS A 37 1555 1555 2.09 SSBOND 3 CYS A 23 CYS A 47 1555 1555 2.17 SSBOND 4 CYS A 27 CYS A 49 1555 1555 2.06 SSBOND 5 CYS B 13 CYS B 64 1555 1555 2.01 SSBOND 6 CYS B 17 CYS B 37 1555 1555 2.05 SSBOND 7 CYS B 23 CYS B 47 1555 1555 2.15 SSBOND 8 CYS B 27 CYS B 49 1555 1555 2.07 SITE 1 AC1 7 CYS A 13 VAL A 14 ARG A 59 CYS A 64 SITE 2 AC1 7 HOH A 73 TYR B 43 HOH B 688 SITE 1 AC2 3 VAL B 14 ARG B 59 CYS B 64 SITE 1 AC3 8 PRO A 53 ASN A 55 HOH A 76 HOH A 169 SITE 2 AC3 8 ARG B 19 ALA B 21 HOH B 610 HOH B 656 SITE 1 AC4 8 TYR B 6 GLN B 38 GLY B 41 LYS B 42 SITE 2 AC4 8 TYR B 43 GLY B 44 ALA B 46 EDO B 601 SITE 1 AC5 7 TYR B 6 LYS B 42 VAL B 60 PRO B 61 SITE 2 AC5 7 EDO B 501 HOH B 660 HOH B 663 CRYST1 70.907 70.907 170.681 90.00 90.00 90.00 I 41 2 2 32 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 0.014100 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014100 0.000000 0.00000 SCALE3 0.000000 0.000000 0.005900 0.00000