HEADER TOXIN 19-AUG-11 2LI3 TITLE STRUCTURAL AND FUNCTIONAL ANALYSIS OF A NOVEL POTASSIUM TOXIN TITLE 2 ARGENTINEAN SCORPION TITYUS TRIVITTATUS REVEALS A NEW KAPPA SUB- TITLE 3 FAMILY COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL TOXIN KAPPA-KTX3.1; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: TITYUS TRIVITTATUS; SOURCE 3 ORGANISM_COMMON: ARGENTINEAN SCORPION; SOURCE 4 ORGANISM_TAXID: 369776; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_VECTOR: PET32 MODIFIED KEYWDS ALPHA/ALPHA MOTIF, ALPHA SCORPION TOXIN, VOLTAGE GATED POTASSIUM KEYWDS 2 CHANNEL ALPHA TOXIN, TOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR A.SAUCEDO-YANEZ,F.DEL RIO-PORTILLA,R.HERNANDEZ-LOPEZ REVDAT 2 25-APR-12 2LI3 1 JRNL REVDAT 1 11-JAN-12 2LI3 0 JRNL AUTH A.L.SAUCEDO,D.FLORES-SOLIS,R.C.RODRIGUEZ DE LA VEGA, JRNL AUTH 2 B.RAMIREZ-CORDERO,R.HERNANDEZ-LOPEZ,P.CANO-SANCHEZ, JRNL AUTH 3 R.N.NAVARRO,J.GARCIA-VALDES,F.CORONAS-VALDERRAMA,A.DE ROODT, JRNL AUTH 4 L.G.BRIEBA,L.D.POSSANI,F.DEL RIO-PORTILLA JRNL TITL NEW TRICKS OF AN OLD PATTERN: STRUCTURAL VERSATILITY OF JRNL TITL 2 SCORPION TOXINS WITH COMMON CYSTEINE SPACING. JRNL REF J.BIOL.CHEM. V. 287 12321 2012 JRNL REFN ISSN 0021-9258 JRNL PMID 22238341 JRNL DOI 10.1074/JBC.M111.329607 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CYANA 2.1, AMBER REMARK 3 AUTHORS : D.A.CASE, ET AL. (CYANA), GUNTERT, MUMENTHALER AND REMARK 3 WUTHRICH (AMBER) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: STRUCTURE DETERMINATION WAS PERFORMED REMARK 3 USING CYANA 2.1.THE 20 STRUCTURES OF 200 WITH LOWEST TARGET REMARK 3 FUNCTION WERE REFINED BY MOLECULAR DYNAMICS WITH EXPLICIT SOLVENT REMARK 3 USING AMBER 9.0. REMARK 4 REMARK 4 2LI3 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-AUG-11. REMARK 100 THE RCSB ID CODE IS RCSB102411. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 3.5 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 2.3 MM KAPPA-KTX3.1 SCORPION REMARK 210 TOXIN, 95% H2O/5% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY; 2D 1H-1H TOCSY; 2D DQF-C REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : INOVA; UNITY REMARK 210 SPECTROMETER MANUFACTURER : VARIAN; VARIAN REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : NMRPIPE, XEASY, CARA1.5, AMBER REMARK 210 9, MOLMOL, CYANA 2.1 REMARK 210 METHOD USED : TORSION ANGLE DYNAMICS, REMARK 210 MOLECULAR DYNAMICS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 200 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : LOWEST TARGET FUNCTION REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL 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: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 1 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 1 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 2 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 3 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 3 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 4 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 4 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 5 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 5 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 6 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 6 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 7 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 7 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 8 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 4.4 DEGREES REMARK 500 9 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 10 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 4.6 DEGREES REMARK 500 10 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.9 DEGREES REMARK 500 10 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 10 ARG A 30 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 11 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 4.5 DEGREES REMARK 500 12 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 12 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 13 TYR A 21 CB - CG - CD1 ANGL. DEV. = -3.8 DEGREES REMARK 500 13 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 5.2 DEGREES REMARK 500 13 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 15 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 16 ARG A 14 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 16 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 17 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 17 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 18 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 4.5 DEGREES REMARK 500 18 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 19 ARG A 30 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 20 ARG A 27 NE - CZ - NH1 ANGL. DEV. = 4.6 DEGREES 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 GLN A 12 -30.54 -132.66 REMARK 500 1 LYS A 16 -32.32 -137.71 REMARK 500 2 LYS A 16 -53.40 -140.70 REMARK 500 3 LYS A 16 -44.77 -137.99 REMARK 500 3 ILE A 29 96.24 -65.34 REMARK 500 4 ASN A 25 -15.27 -145.17 REMARK 500 5 CYS A 4 48.45 -74.95 REMARK 500 5 GLN A 12 -39.15 -143.34 REMARK 500 5 LYS A 16 -45.47 -132.76 REMARK 500 5 CYS A 26 -11.75 56.66 REMARK 500 6 CYS A 4 79.37 53.49 REMARK 500 6 LYS A 16 -43.01 -144.05 REMARK 500 6 CYS A 26 -22.62 58.58 REMARK 500 7 LYS A 16 -51.72 -136.88 REMARK 500 8 SER A 2 -12.42 -149.77 REMARK 500 8 CYS A 26 19.18 50.83 REMARK 500 10 CYS A 4 30.49 -68.56 REMARK 500 12 CYS A 26 -22.24 58.28 REMARK 500 12 ILE A 29 -23.94 49.52 REMARK 500 13 CYS A 4 18.21 53.53 REMARK 500 13 LYS A 16 -37.66 -136.18 REMARK 500 14 CYS A 4 44.60 -151.76 REMARK 500 14 LYS A 16 -53.10 -134.46 REMARK 500 15 ILE A 29 97.05 -58.34 REMARK 500 16 LYS A 16 -51.55 -132.36 REMARK 500 16 CYS A 26 -13.38 56.66 REMARK 500 18 CYS A 26 13.77 57.13 REMARK 500 19 LYS A 16 -43.84 -139.42 REMARK 500 20 ILE A 29 93.98 -66.77 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 5 ARG A 27 0.09 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE REMARK 500 M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 12 ILE A 29 24.0 L L OUTSIDE RANGE REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 17876 RELATED DB: BMRB DBREF 2LI3 A 1 30 PDB 2LI3 2LI3 1 30 SEQRES 1 A 30 GLY SER GLY CYS MET PRO GLU TYR CYS ALA GLY GLN CYS SEQRES 2 A 30 ARG GLY LYS VAL SER GLN ASP TYR CYS LEU LYS ASN CYS SEQRES 3 A 30 ARG CYS ILE ARG HELIX 1 1 MET A 5 CYS A 13 1 9 HELIX 2 2 LYS A 16 CYS A 26 1 11 SSBOND 1 CYS A 4 CYS A 26 1555 1555 2.04 SSBOND 2 CYS A 9 CYS A 22 1555 1555 2.03 SSBOND 3 CYS A 13 CYS A 28 1555 1555 2.04 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