HEADER TOXIN 17-AUG-99 1C49 TITLE STRUCTURAL AND FUNCTIONAL DIFFERENCES OF TWO TOXINS FROM THE SCORPION TITLE 2 PANDINUS IMPERATOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: TOXIN K-BETA; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: COMPLETE PEPTIDE; COMPND 5 SYNONYM: PITX-KB, ALPHA-KTX5.2; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: PANDINUS IMPERATOR; SOURCE 3 ORGANISM_COMMON: EMPEROR SCORPION; SOURCE 4 ORGANISM_TAXID: 55084; SOURCE 5 TISSUE: VENOM; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PSR9 KEYWDS SCORPION TOXIN, POTASSIUM CHANNELS BLOCKERS, ALPHA-K TOXIN FAMILY, KEYWDS 2 NEUROTOXIN, NMR SOLUTION STRUCTURE, TOXIN EXPDTA SOLUTION NMR NUMMDL 18 AUTHOR K.C.KLENK,T.C.TENENHOLZ,D.R.MATTESON,R.S.ROGOWSKI,M.P.BLAUSTEIN, AUTHOR 2 D.J.WEBER REVDAT 4 27-DEC-23 1C49 1 REMARK REVDAT 3 16-FEB-22 1C49 1 REMARK REVDAT 2 24-FEB-09 1C49 1 VERSN REVDAT 1 22-MAR-00 1C49 0 JRNL AUTH K.C.KLENK,T.C.TENENHOLZ,D.R.MATTESON,R.S.ROGOWSKI, JRNL AUTH 2 M.P.BLAUSTEIN,D.J.WEBER JRNL TITL STRUCTURAL AND FUNCTIONAL DIFFERENCES OF TWO TOXINS FROM THE JRNL TITL 2 SCORPION PANDINUS IMPERATOR. JRNL REF PROTEINS V. 38 441 2000 JRNL REFN ISSN 0887-3585 JRNL PMID 10707030 JRNL DOI 10.1002/(SICI)1097-0134(20000301)38:4<441::AID-PROT9>3.3.CO; JRNL DOI 2 2-C REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.S.ROGOWSKI,J.H.COLLINS,T.J.O'NEILL,T.A.GUSTAFSON, REMARK 1 AUTH 2 T.R.WERKMAN,M.A.ROGAWSKI,T.C.TENENHOLZ,D.J.WEBER, REMARK 1 AUTH 3 M.P.BLAUSTEIN REMARK 1 TITL THREE NEW TOXINS FROM THE SCORPION PANDINUS IMPERATOR REMARK 1 TITL 2 SELECTIVELY BLOCK CERTAIN VOLTAGE-GATED K+ CHANNELS REMARK 1 REF MOL.PHARMACOL. V. 50 1167 1996 REMARK 1 REFN ISSN 0026-895X REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 425 NOE DISTANCE CONSTRAINTS, 22 H-BOND CONSTRAINTS, 11 CHI ANGLE REMARK 3 CONSTRAINTS, REMARK 3 26 PHI ANGLE CONSTRAINTS REMARK 4 REMARK 4 1C49 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-AUG-99. REMARK 100 THE DEPOSITION ID IS D_1000001286. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 310.00 REMARK 210 PH : 3.50 REMARK 210 IONIC STRENGTH : 1.44 MM REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 10% D2O AND 100%D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY; TOCSY; DQF-COSY; ROESY; REMARK 210 P.E.COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ REMARK 210 SPECTROMETER MODEL : DMX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : X-PLOR 3.1 REMARK 210 METHOD USED : DISTANCE GEOMETRY SIMULATED REMARK 210 ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 500 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 18 REMARK 210 CONFORMERS, SELECTION CRITERIA : NULL REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: REMARK 210 THE STRUCTURE WAS DETERMINED USING TWO-DIMENSIONAL NMR ON AN REMARK 210 UNLABELED SAMPLE REMARK 210 OF RECOMBINANT PITX-KB (M). REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS 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 SG CYS A 13 SG CYS A 33 2.02 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 1 ILE A 5 -163.67 -55.95 REMARK 500 1 THR A 8 -59.40 -131.49 REMARK 500 2 THR A 21 -45.26 -136.01 REMARK 500 2 ASN A 25 107.97 -41.46 REMARK 500 2 MET A 29 -165.15 -115.09 REMARK 500 2 ASN A 30 90.68 -52.21 REMARK 500 2 PHE A 36 46.33 -155.71 REMARK 500 3 ASN A 25 103.25 -54.37 REMARK 500 4 THR A 8 -37.81 -130.36 REMARK 500 5 THR A 8 -39.92 -138.66 REMARK 500 5 THR A 21 -40.17 -146.07 REMARK 500 5 ASN A 25 109.28 -45.48 REMARK 500 5 CYS A 33 152.58 -43.48 REMARK 500 6 ILE A 5 -163.00 -58.19 REMARK 500 6 ASN A 25 91.42 -52.21 REMARK 500 6 ASN A 30 70.93 45.89 REMARK 500 6 ARG A 31 40.17 38.98 REMARK 500 6 PHE A 36 -36.77 -156.04 REMARK 500 7 THR A 21 -36.34 -139.53 REMARK 500 7 ASN A 30 93.90 -50.22 REMARK 500 8 ILE A 5 -154.27 -64.87 REMARK 500 8 SER A 6 98.86 -169.12 REMARK 500 8 THR A 8 -50.59 -133.12 REMARK 500 8 ASN A 25 94.03 -39.65 REMARK 500 8 ASN A 30 98.10 -59.92 REMARK 500 8 PHE A 36 -81.30 -149.24 REMARK 500 9 PHE A 36 57.83 -151.72 REMARK 500 10 ILE A 5 -168.82 -67.00 REMARK 500 10 THR A 8 -47.47 -140.24 REMARK 500 10 ASN A 30 56.24 38.24 REMARK 500 11 ILE A 5 -169.01 -62.69 REMARK 500 11 THR A 21 -51.66 -150.07 REMARK 500 11 ASN A 25 91.00 -61.41 REMARK 500 11 ARG A 31 29.77 43.60 REMARK 500 11 PHE A 36 -70.31 -81.06 REMARK 500 12 SER A 6 44.37 -106.04 REMARK 500 12 THR A 8 14.43 -140.36 REMARK 500 12 THR A 21 -60.85 -143.60 REMARK 500 13 ILE A 5 -154.01 -72.28 REMARK 500 13 SER A 6 106.64 177.90 REMARK 500 13 PRO A 24 42.56 -80.58 REMARK 500 14 THR A 8 12.83 -140.93 REMARK 500 14 ASN A 25 90.25 -62.41 REMARK 500 15 ILE A 5 -174.98 -69.36 REMARK 500 15 THR A 21 -59.21 -148.40 REMARK 500 16 THR A 21 -70.70 -148.04 REMARK 500 16 MET A 29 -165.41 -100.50 REMARK 500 16 ASN A 30 88.97 -50.41 REMARK 500 17 ILE A 5 -156.93 -61.08 REMARK 500 17 THR A 8 -50.60 -138.96 REMARK 500 REMARK 500 THIS ENTRY HAS 56 RAMACHANDRAN OUTLIERS. 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 1 ARG A 31 0.12 SIDE CHAIN REMARK 500 1 ARG A 38 0.26 SIDE CHAIN REMARK 500 2 ARG A 31 0.26 SIDE CHAIN REMARK 500 2 ARG A 38 0.27 SIDE CHAIN REMARK 500 3 ARG A 31 0.26 SIDE CHAIN REMARK 500 3 ARG A 38 0.30 SIDE CHAIN REMARK 500 4 ARG A 31 0.17 SIDE CHAIN REMARK 500 4 ARG A 38 0.21 SIDE CHAIN REMARK 500 5 ARG A 31 0.31 SIDE CHAIN REMARK 500 5 ARG A 38 0.23 SIDE CHAIN REMARK 500 6 ARG A 31 0.24 SIDE CHAIN REMARK 500 6 ARG A 38 0.32 SIDE CHAIN REMARK 500 7 ARG A 31 0.18 SIDE CHAIN REMARK 500 7 ARG A 38 0.32 SIDE CHAIN REMARK 500 8 ARG A 31 0.24 SIDE CHAIN REMARK 500 8 ARG A 38 0.31 SIDE CHAIN REMARK 500 9 ARG A 31 0.28 SIDE CHAIN REMARK 500 9 ARG A 38 0.10 SIDE CHAIN REMARK 500 10 ARG A 31 0.21 SIDE CHAIN REMARK 500 10 ARG A 38 0.20 SIDE CHAIN REMARK 500 11 ARG A 31 0.32 SIDE CHAIN REMARK 500 11 ARG A 38 0.21 SIDE CHAIN REMARK 500 12 ARG A 31 0.27 SIDE CHAIN REMARK 500 12 ARG A 38 0.23 SIDE CHAIN REMARK 500 13 ARG A 31 0.24 SIDE CHAIN REMARK 500 13 ARG A 38 0.24 SIDE CHAIN REMARK 500 14 ARG A 31 0.28 SIDE CHAIN REMARK 500 14 ARG A 38 0.17 SIDE CHAIN REMARK 500 15 ARG A 31 0.32 SIDE CHAIN REMARK 500 15 ARG A 38 0.09 SIDE CHAIN REMARK 500 16 ARG A 31 0.22 SIDE CHAIN REMARK 500 17 ARG A 31 0.20 SIDE CHAIN REMARK 500 17 ARG A 38 0.32 SIDE CHAIN REMARK 500 18 ARG A 31 0.29 SIDE CHAIN REMARK 500 18 ARG A 38 0.32 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL DBREF 1C49 A 4 38 UNP P55928 SCKB_PANIM 1 35 SEQRES 1 A 35 THR ILE SER CYS THR ASN GLU LYS GLN CYS TYR PRO HIS SEQRES 2 A 35 CYS LYS LYS GLU THR GLY TYR PRO ASN ALA LYS CYS MET SEQRES 3 A 35 ASN ARG LYS CYS LYS CYS PHE GLY ARG HELIX 1 1 ASN A 9 GLN A 12 5 4 HELIX 2 2 CYS A 13 THR A 21 1 9 SHEET 1 A 2 ALA A 26 MET A 29 0 SHEET 2 A 2 LYS A 32 CYS A 35 -1 O LYS A 32 N MET A 29 SSBOND 1 CYS A 7 CYS A 28 1555 1555 2.02 SSBOND 2 CYS A 17 CYS A 35 1555 1555 2.02 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 MODEL 1