10 20 30 40 50 60 70 80 1HP2 - Header ----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----| Asymmetric UnitHEADER TOXIN 12-DEC-00 1HP2
TITLE SOLUTION STRUCTURE OF A TOXIN FROM THE SCORPION TITYUS TITLE 2 SERRULATUS (TSTX-K ALPHA) DETERMINED BY NMR.
COMPND MOL_ID: 1; COMPND 2 MOLECULE: TITYUSTOXIN K ALPHA; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: TSTX-K ALPHA, TSK4; COMPND 5 ENGINEERED: YES
SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: TITYUS SERRULATUS; SOURCE 3 ORGANISM_COMMON: BRAZILIAN SCORPION; SOURCE 4 ORGANISM_TAXID: 6887; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562
KEYWDS K+ CHANNEL, SCORPION TOXIN, ALPHA-K TOXIN,
EXPDTA SOLUTION NMR
NUMMDL 30
AUTHOR K.C.ELLIS,T.C.TENENHOLZ,W.F.GILLY,M.P.BLAUSTEIN,D.J.WEBER
REVDAT 2 24-FEB-09 1HP2 1 VERSN REVDAT 1 13-JUN-01 1HP2 0
JRNL AUTH K.C.ELLIS,T.C.TENENHOLZ,H.JERNG,M.HAYHURST, JRNL AUTH 2 C.S.DUDLAK,W.F.GILLY,M.P.BLAUSTEIN,D.J.WEBER JRNL TITL INTERACTION OF A TOXIN FROM THE SCORPION TITYUS JRNL TITL 2 SERRULATUS WITH A CLONED K+ CHANNEL FROM SQUID JRNL TITL 3 (SQKV1A). JRNL REF BIOCHEMISTRY V. 40 5942 2001 JRNL REFN ISSN 0006-2960 JRNL PMID 11352729 JRNL DOI 10.1021/BI010173G
REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.P.BLAUSTEIN,R.S.ROGOWSKI,M.J.SCHNEIDER, REMARK 1 AUTH 2 B.K.KRUEGER REMARK 1 TITL POLYPEPTIDE TOXINS FROM THE VENOMS OF OLD WORLD REMARK 1 TITL 2 AND NEW WORLD SCORPIONS PREFERENTIALLY BLOCK REMARK 1 TITL 3 DIFFERENT POTASSIUM CHANNELS REMARK 1 REF MOL.PHARMACOL. V. 40 932 1991 REMARK 1 REFN ISSN 0026-895X
REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE.
REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THESE STRUCTURES ARE BASED ON A REMARK 3 TOTAL OF 569 NOE DISTANCE CONTRAINTS, 13 DIHEDRAL ANGLE REMARK 3 RESTRAINTS, AND 16 PHI ANGLE RESTRAINTS.
REMARK 4 REMARK 4 1HP2 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08
REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-DEC-00. REMARK 100 THE RCSB ID CODE IS RCSB012493.
REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 310; 305; 300; 295; 290 REMARK 210 PH : 3.50; 3.50; 3.50; 3.50; 3.50 REMARK 210 IONIC STRENGTH : 1.44; 1.44; 1.44; 1.44; 1.44 REMARK 210 PRESSURE : 1 ATM; 1 ATM; 1 ATM; 1 ATM; 1 REMARK 210 ATM REMARK 210 SAMPLE CONTENTS : 4.53 MM TSTX-KA 2.2 MM D11- REMARK 210 TRIS 0.1 MM EDTA 0.35 MM NAN3; REMARK 210 4.53 MM TSTX-KA 2.2 MM D11- REMARK 210 TRIS 0.1 MM EDTA 0.35 MM NAN3 REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY, DQF-COSY, TOCSY, REMARK 210 ROESY, 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 3.851, XWINNMR, REMARK 210 NMRPIPE 1.7, FELIX REMARK 210 METHOD USED : DISTANCE GEOMETRY SIMULATED REMARK 210 ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 30 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH ACCEPTABLE REMARK 210 COVALENT GEOMETRY,STRUCTURES REMARK 210 WITH THE LEAST RESTRAINT REMARK 210 VIOLATIONS,STRUCTURES WITH THE REMARK 210 LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 25 REMARK 210 REMARK 210 REMARK: THIS STRUCTURE WAS DETERMINED USING STANDARD 2D REMARK 210 HOMONUCLEAR TECHNIQUES.
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 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 ALA A 5 104.64 -44.25 REMARK 500 1 LYS A 6 88.71 -55.02 REMARK 500 2 LYS A 6 80.02 -58.65 REMARK 500 2 ALA A 24 77.79 -65.53 REMARK 500 2 ASN A 30 23.81 48.77 REMARK 500 3 ALA A 5 94.79 -43.00 REMARK 500 3 LYS A 6 91.04 -47.57 REMARK 500 3 LYS A 23 -156.20 -126.97 REMARK 500 3 ALA A 24 44.47 -160.88 REMARK 500 3 ASN A 30 14.06 57.61 REMARK 500 4 ASN A 4 68.83 -118.91 REMARK 500 4 ALA A 24 62.28 -69.69 REMARK 500 5 ALA A 5 104.52 -41.97 REMARK 500 5 LYS A 6 99.90 -57.40 REMARK 500 5 CYS A 7 -164.59 -70.26 REMARK 500 5 SER A 10 -55.50 170.32 REMARK 500 5 ALA A 25 50.85 -145.23 REMARK 500 6 ALA A 20 -65.55 -91.10 REMARK 500 6 LYS A 27 -162.09 -107.90 REMARK 500 6 ASN A 30 17.87 53.86 REMARK 500 7 LYS A 6 62.63 33.18 REMARK 500 8 ASN A 4 59.31 -113.71 REMARK 500 8 CYS A 7 170.07 -44.14 REMARK 500 8 LYS A 23 -147.50 -123.53 REMARK 500 8 ALA A 24 48.36 -167.56 REMARK 500 8 LYS A 27 -165.00 -127.90 REMARK 500 9 LYS A 6 69.23 -64.35 REMARK 500 9 CYS A 7 156.87 -48.93 REMARK 500 9 SER A 10 -55.83 169.67 REMARK 500 9 ALA A 24 65.01 -65.65 REMARK 500 10 LYS A 6 94.42 -59.85 REMARK 500 11 ASN A 4 30.20 -86.33 REMARK 500 11 LYS A 6 92.56 -39.56 REMARK 500 11 ALA A 20 -65.65 -103.41 REMARK 500 12 LYS A 6 48.80 36.40 REMARK 500 13 CYS A 7 -162.54 -55.54 REMARK 500 13 ARG A 8 -33.87 -141.45 REMARK 500 13 SER A 10 -53.75 168.11 REMARK 500 13 ALA A 24 91.21 -67.30 REMARK 500 14 ASN A 4 46.78 -90.81 REMARK 500 14 ALA A 25 68.19 -150.35 REMARK 500 15 ALA A 5 171.03 -46.88 REMARK 500 15 LYS A 6 69.30 -116.32 REMARK 500 15 CYS A 7 175.24 -49.12 REMARK 500 15 SER A 10 -58.79 175.88 REMARK 500 16 ASN A 4 82.38 -63.87 REMARK 500 16 LYS A 6 92.02 -36.01 REMARK 500 16 ILE A 21 -37.40 -148.52 REMARK 500 17 ASN A 4 48.09 -79.34 REMARK 500 17 LYS A 6 91.08 -45.76 REMARK 500 17 CYS A 7 -167.68 -73.11 REMARK 500 17 ALA A 24 60.33 39.62 REMARK 500 17 ALA A 25 82.37 -150.22 REMARK 500 17 ASN A 30 18.21 53.87 REMARK 500 18 ALA A 5 97.90 -41.20 REMARK 500 18 LYS A 6 96.64 -49.04 REMARK 500 18 ALA A 24 46.28 39.16 REMARK 500 19 ASN A 4 60.03 -101.34 REMARK 500 19 LYS A 6 79.65 47.65 REMARK 500 19 CYS A 7 -165.20 -70.42 REMARK 500 19 SER A 10 -55.05 168.65 REMARK 500 20 ASN A 4 42.67 -108.14 REMARK 500 20 LYS A 6 72.57 36.06 REMARK 500 21 ASN A 4 68.16 -101.00 REMARK 500 21 ALA A 20 -69.36 -102.98 REMARK 500 21 ASN A 30 22.64 48.92 REMARK 500 22 ASN A 4 55.31 -100.24 REMARK 500 22 LYS A 6 85.18 46.63 REMARK 500 22 CYS A 7 -168.07 -69.70 REMARK 500 22 ARG A 8 -34.89 -140.37 REMARK 500 22 SER A 10 -55.85 169.90 REMARK 500 23 CYS A 7 154.73 -45.65 REMARK 500 25 ALA A 24 79.61 -68.63 REMARK 500 26 ASN A 30 18.14 56.96 REMARK 500 27 CYS A 7 176.05 -55.60 REMARK 500 27 SER A 10 -55.23 169.58 REMARK 500 28 ALA A 24 46.87 39.60 REMARK 500 29 LYS A 6 77.03 -68.60 REMARK 500 29 CYS A 7 -178.11 -50.68 REMARK 500 29 SER A 10 -54.85 167.86 REMARK 500 29 MET A 29 73.38 -113.53 REMARK 500 30 ALA A 5 -141.47 37.78 REMARK 500 30 LYS A 6 50.59 -175.30 REMARK 500 30 SER A 10 -54.93 167.59 REMARK 500 30 LYS A 23 -139.43 -127.35 REMARK 500 30 ALA A 24 50.64 179.61 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 8 0.23 SIDE_CHAIN REMARK 500 2 ARG A 8 0.31 SIDE_CHAIN REMARK 500 3 ARG A 8 0.30 SIDE_CHAIN REMARK 500 4 ARG A 8 0.29 SIDE_CHAIN REMARK 500 5 ARG A 8 0.31 SIDE_CHAIN REMARK 500 6 ARG A 8 0.31 SIDE_CHAIN REMARK 500 7 ARG A 8 0.16 SIDE_CHAIN REMARK 500 8 ARG A 8 0.31 SIDE_CHAIN REMARK 500 9 ARG A 8 0.20 SIDE_CHAIN REMARK 500 10 ARG A 8 0.18 SIDE_CHAIN REMARK 500 11 ARG A 8 0.14 SIDE_CHAIN REMARK 500 12 ARG A 8 0.32 SIDE_CHAIN REMARK 500 13 ARG A 8 0.29 SIDE_CHAIN REMARK 500 14 ARG A 8 0.32 SIDE_CHAIN REMARK 500 15 ARG A 8 0.12 SIDE_CHAIN REMARK 500 16 ARG A 8 0.26 SIDE_CHAIN REMARK 500 17 ARG A 8 0.17 SIDE_CHAIN REMARK 500 18 ARG A 8 0.16 SIDE_CHAIN REMARK 500 19 ARG A 8 0.32 SIDE_CHAIN REMARK 500 20 ARG A 8 0.12 SIDE_CHAIN REMARK 500 21 ARG A 8 0.31 SIDE_CHAIN REMARK 500 22 ARG A 8 0.29 SIDE_CHAIN REMARK 500 23 ARG A 8 0.19 SIDE_CHAIN REMARK 500 24 ARG A 8 0.28 SIDE_CHAIN REMARK 500 25 ARG A 8 0.18 SIDE_CHAIN REMARK 500 26 ARG A 8 0.32 SIDE_CHAIN REMARK 500 27 ARG A 8 0.20 SIDE_CHAIN REMARK 500 28 ARG A 8 0.15 SIDE_CHAIN REMARK 500 29 ARG A 8 0.27 SIDE_CHAIN REMARK 500 30 ARG A 8 0.32 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL
DBREF 1HP2 A 1 37 UNP P46114 SCKA_TITSE 1 37
SEQRES 1 A 37 VAL PHE ILE ASN ALA LYS CYS ARG GLY SER PRO GLU CYS SEQRES 2 A 37 LEU PRO LYS CYS LYS GLU ALA ILE GLY LYS ALA ALA GLY SEQRES 3 A 37 LYS CYS MET ASN GLY LYS CYS LYS CYS TYR PRO
HELIX 1 1 GLY A 9 ILE A 21 1 13
SHEET 1 A 3 PHE A 2 ILE A 3 0 SHEET 2 A 3 LYS A 32 CYS A 35 -1 N CYS A 33 O ILE A 3 SHEET 3 A 3 GLY A 26 MET A 29 -1 O LYS A 27 N LYS A 34
SSBOND 1 CYS A 7 CYS A 28 1555 1555 2.02 SSBOND 2 CYS A 13 CYS A 33 1555 1555 2.02 SSBOND 3 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