HEADER TOXIN 28-MAR-02 1LA4 TITLE SOLUTION STRUCTURE OF SGTX1 COMPND MOL_ID: 1; COMPND 2 MOLECULE: SGTX1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: VOLTAGE-GATED POTASSIUM CHANNEL BLOCKER; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE IS CHEMICALLY SYNTHESIZED. KEYWDS TRIPLE-STRANDED ANTIPARALLEL BETA-SHEET, INHIBITORY CYSTINE KNOT, KEYWDS 2 PEPTIDE NEUROTOXIN, TOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR C.W.LEE,S.H.ROH,S.KIM,H.ENDOH,Y.KODERA,T.MAEDA,K.J.SWARTZ,J.I.KIM REVDAT 4 23-FEB-22 1LA4 1 REMARK REVDAT 3 24-FEB-09 1LA4 1 VERSN REVDAT 2 09-MAR-04 1LA4 1 JRNL REVDAT 1 11-NOV-03 1LA4 0 JRNL AUTH C.W.LEE,S.KIM,S.H.ROH,H.ENDOH,Y.KODERA,T.MAEDA,T.KOHNO, JRNL AUTH 2 J.M.WANG,K.J.SWARTZ,J.I.KIM JRNL TITL SOLUTION STRUCTURE AND FUNCTIONAL CHARACTERIZATION OF SGTX1, JRNL TITL 2 A MODIFIER OF KV2.1 CHANNEL GATING JRNL REF BIOCHEMISTRY V. 43 890 2004 JRNL REFN ISSN 0006-2960 JRNL PMID 14744131 JRNL DOI 10.1021/BI0353373 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : UXNMR 2.6, X-PLOR 3.851 REMARK 3 AUTHORS : BRUKER (UXNMR), A.T.BRUNGER (X-PLOR) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 ADDITIONAL COMMENTS ABOUT THE NMR REFINEMENT CAN BE PLACED HERE, REMARK 3 E.G. REMARK 3 THE STRUCTURES ARE BASED ON A TOTAL OF 499 RESTRAINTS, 449 ARE NOE- REMARK 3 DERIVED REMARK 3 DISTANCE CONSTRAINTS, 27 DIHEDRAL ANGLE RESTRAINTS,14 DISTANCE REMARK 3 RESTRAINTS REMARK 3 FROM HYDROGEN BONDS, AND 9 DISTANCE RESTRAINTS FROM DISULFIDE REMARK 3 BONDS. REMARK 4 REMARK 4 1LA4 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 29-MAR-02. REMARK 100 THE DEPOSITION ID IS D_1000015786. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 310 REMARK 210 PH : 3.5 REMARK 210 IONIC STRENGTH : 0 REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 2MM SGTX1; 90% H2O, 10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY; DQF-COSY; PE-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : DMX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : UXNMR 2.6, X-PLOR 3.851 REMARK 210 METHOD USED : DISTANCE GEOMETRY, SIMULATED REMARK 210 ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LEAST REMARK 210 RESTRAINT VIOLATIONS,STRUCTURES REMARK 210 WITH THE LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 16 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 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 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (RES=RESIDUE NAME; REMARK 470 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 470 MODELS 1-20 REMARK 470 RES CSSEQI ATOMS REMARK 470 PHE A 34 O 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 TYR A 4 -164.00 -124.72 REMARK 500 1 LEU A 5 140.80 -39.65 REMARK 500 1 CYS A 16 -166.76 -77.03 REMARK 500 1 LYS A 17 43.09 -84.30 REMARK 500 1 HIS A 18 -31.00 -161.75 REMARK 500 1 CYS A 21 92.26 -52.34 REMARK 500 2 LEU A 5 154.56 -40.57 REMARK 500 2 PHE A 6 34.11 37.33 REMARK 500 2 CYS A 16 -164.13 -73.26 REMARK 500 2 LYS A 17 41.35 -87.55 REMARK 500 2 HIS A 18 -32.83 -160.43 REMARK 500 2 THR A 33 -82.13 -104.90 REMARK 500 3 CYS A 2 -169.38 -127.55 REMARK 500 3 LEU A 5 152.26 -40.38 REMARK 500 3 LYS A 17 45.72 -84.57 REMARK 500 3 HIS A 18 -34.84 -159.22 REMARK 500 3 CYS A 21 102.79 -51.78 REMARK 500 4 TYR A 4 -160.20 -76.59 REMARK 500 4 LEU A 5 158.91 -44.19 REMARK 500 4 PHE A 6 36.33 34.88 REMARK 500 4 CYS A 16 -165.13 -76.06 REMARK 500 4 LYS A 17 39.94 -85.90 REMARK 500 4 HIS A 18 -35.17 -160.43 REMARK 500 4 CYS A 21 104.41 -48.92 REMARK 500 4 THR A 33 -127.42 -93.58 REMARK 500 5 CYS A 2 -169.00 -125.04 REMARK 500 5 LEU A 5 150.47 -48.06 REMARK 500 5 LYS A 17 44.19 -82.72 REMARK 500 5 HIS A 18 -35.43 -161.21 REMARK 500 6 PHE A 6 29.67 48.79 REMARK 500 6 CYS A 16 -167.99 -75.41 REMARK 500 6 LYS A 17 43.60 -85.79 REMARK 500 6 HIS A 18 -31.33 -160.03 REMARK 500 6 THR A 33 -141.41 -125.02 REMARK 500 7 CYS A 2 -175.41 -53.84 REMARK 500 7 LEU A 5 154.76 -32.53 REMARK 500 7 PHE A 6 36.91 38.14 REMARK 500 7 LYS A 17 45.33 -84.07 REMARK 500 7 HIS A 18 -35.24 -159.65 REMARK 500 7 CYS A 21 90.70 -56.22 REMARK 500 7 THR A 33 -76.54 -120.66 REMARK 500 8 TYR A 4 -158.33 -105.76 REMARK 500 8 LEU A 5 138.91 -36.99 REMARK 500 8 PHE A 6 28.82 37.12 REMARK 500 8 LYS A 17 45.87 -82.13 REMARK 500 8 HIS A 18 -37.40 -161.33 REMARK 500 8 THR A 33 -60.31 -102.19 REMARK 500 9 CYS A 2 -161.04 33.70 REMARK 500 9 TYR A 4 -160.27 -102.65 REMARK 500 9 CYS A 16 -166.26 -75.95 REMARK 500 REMARK 500 THIS ENTRY HAS 123 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 3 0.25 SIDE CHAIN REMARK 500 1 ARG A 22 0.26 SIDE CHAIN REMARK 500 2 ARG A 3 0.32 SIDE CHAIN REMARK 500 2 ARG A 22 0.23 SIDE CHAIN REMARK 500 3 ARG A 3 0.28 SIDE CHAIN REMARK 500 3 ARG A 22 0.11 SIDE CHAIN REMARK 500 4 ARG A 3 0.30 SIDE CHAIN REMARK 500 4 ARG A 22 0.30 SIDE CHAIN REMARK 500 5 ARG A 3 0.26 SIDE CHAIN REMARK 500 5 ARG A 22 0.13 SIDE CHAIN REMARK 500 6 ARG A 3 0.25 SIDE CHAIN REMARK 500 7 ARG A 3 0.14 SIDE CHAIN REMARK 500 7 ARG A 22 0.13 SIDE CHAIN REMARK 500 8 ARG A 3 0.19 SIDE CHAIN REMARK 500 8 ARG A 22 0.32 SIDE CHAIN REMARK 500 9 ARG A 3 0.28 SIDE CHAIN REMARK 500 9 ARG A 22 0.32 SIDE CHAIN REMARK 500 10 ARG A 3 0.31 SIDE CHAIN REMARK 500 10 ARG A 22 0.15 SIDE CHAIN REMARK 500 11 ARG A 3 0.24 SIDE CHAIN REMARK 500 11 ARG A 22 0.30 SIDE CHAIN REMARK 500 12 ARG A 3 0.32 SIDE CHAIN REMARK 500 12 ARG A 22 0.31 SIDE CHAIN REMARK 500 13 ARG A 3 0.24 SIDE CHAIN REMARK 500 13 ARG A 22 0.14 SIDE CHAIN REMARK 500 14 ARG A 3 0.29 SIDE CHAIN REMARK 500 14 ARG A 22 0.28 SIDE CHAIN REMARK 500 15 ARG A 3 0.32 SIDE CHAIN REMARK 500 15 ARG A 22 0.32 SIDE CHAIN REMARK 500 16 ARG A 3 0.19 SIDE CHAIN REMARK 500 16 ARG A 22 0.30 SIDE CHAIN REMARK 500 17 ARG A 3 0.23 SIDE CHAIN REMARK 500 17 ARG A 22 0.31 SIDE CHAIN REMARK 500 18 ARG A 3 0.29 SIDE CHAIN REMARK 500 19 ARG A 3 0.23 SIDE CHAIN REMARK 500 19 ARG A 22 0.20 SIDE CHAIN REMARK 500 20 ARG A 3 0.14 SIDE CHAIN REMARK 500 20 ARG A 22 0.23 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL DBREF 1LA4 A 1 34 UNP P56855 TX1_SCOGR 1 34 SEQRES 1 A 34 THR CYS ARG TYR LEU PHE GLY GLY CYS LYS THR THR ALA SEQRES 2 A 34 ASP CYS CYS LYS HIS LEU ALA CYS ARG SER ASP GLY LYS SEQRES 3 A 34 TYR CYS ALA TRP ASP GLY THR PHE HELIX 1 1 THR A 11 CYS A 15 5 5 SHEET 1 A 3 GLY A 7 GLY A 8 0 SHEET 2 A 3 TYR A 27 CYS A 28 -1 O CYS A 28 N GLY A 7 SHEET 3 A 3 CYS A 21 ARG A 22 -1 N ARG A 22 O TYR A 27 SSBOND 1 CYS A 2 CYS A 16 1555 1555 2.02 SSBOND 2 CYS A 9 CYS A 21 1555 1555 2.02 SSBOND 3 CYS A 15 CYS A 28 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