HEADER TOXIN 07-NOV-01 1KC4 TITLE NMR STRUCTURAL ANALYSIS OF THE COMPLEX FORMED BETWEEN ALPHA- TITLE 2 BUNGAROTOXIN AND THE PRINCIPAL ALPHA-NEUROTOXIN BINDING SEQUENCE ON TITLE 3 THE ALPHA7 SUBUNIT OF A NEURONAL NICOTINIC ACETYLCHOLINE RECEPTOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-BUNGAROTOXIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: LONG NEUROTOXIN 1; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: NEURONAL ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA-7 CHAIN; COMPND 7 CHAIN: B; COMPND 8 FRAGMENT: ALPHA-NEUROTOXIN BINDING SITE; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BUNGARUS MULTICINCTUS; SOURCE 3 ORGANISM_COMMON: MANY-BANDED KRAIT; SOURCE 4 ORGANISM_TAXID: 8616; SOURCE 5 MOL_ID: 2; SOURCE 6 ORGANISM_SCIENTIFIC: GALLUS GALLUS; SOURCE 7 ORGANISM_COMMON: CHICKEN; SOURCE 8 ORGANISM_TAXID: 9031; SOURCE 9 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 10 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 11 EXPRESSION_SYSTEM_STRAIN: BLR(DE3)PLYSS; SOURCE 12 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 13 EXPRESSION_SYSTEM_PLASMID: PET31B(+) KEYWDS ALPHA-BUNGAROTOXIN, NICOTINIC ACETYLCHOLINE RECEPTOR ALPHA 7 SUBUNIT, KEYWDS 2 ALPHA-NEUROTOXIN, LIGAND-GATED ION CHANNELS, PROTEIN-PROTEIN KEYWDS 3 INTERACTIONS, PROTEIN-PEPTIDE COMPLEX, TOXIN EXPDTA SOLUTION NMR NUMMDL 10 AUTHOR L.MOISE,A.PISERCHIO,V.J.BASUS,E.HAWROT REVDAT 4 27-OCT-21 1KC4 1 REMARK SEQADV REVDAT 3 24-FEB-09 1KC4 1 VERSN REVDAT 2 17-APR-02 1KC4 1 JRNL REVDAT 1 13-MAR-02 1KC4 0 JRNL AUTH L.MOISE,A.PISERCHIO,V.J.BASUS,E.HAWROT JRNL TITL NMR STRUCTURAL ANALYSIS OF ALPHA-BUNGAROTOXIN AND ITS JRNL TITL 2 COMPLEX WITH THE PRINCIPAL ALPHA-NEUROTOXIN-BINDING SEQUENCE JRNL TITL 3 ON THE ALPHA 7 SUBUNIT OF A NEURONAL NICOTINIC ACETYLCHOLINE JRNL TITL 4 RECEPTOR. JRNL REF J.BIOL.CHEM. V. 277 12406 2002 JRNL REFN ISSN 0021-9258 JRNL PMID 11790782 JRNL DOI 10.1074/JBC.M110320200 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.M.LEVANDOSKI,Y.LIN,L.MOISE,J.T.MCLAUGHLIN,E.COOPER, REMARK 1 AUTH 2 E.HAWROT REMARK 1 TITL CHIMERIC ANALYSIS OF A NEURONAL NICOTINIC ACETYLCHOLINE REMARK 1 TITL 2 RECEPTOR REVEALS AMINO ACIDS CONFERRING SENSITIVITY TO REMARK 1 TITL 3 ALPHA-BUNGAROTOXIN. REMARK 1 REF J.BIOL.CHEM. V. 274 26113 1999 REMARK 1 REFN ISSN 0021-9258 REMARK 1 DOI 10.1074/JBC.274.37.26113 REMARK 1 REFERENCE 2 REMARK 1 AUTH K.E.MCLANE,X.D.WU,R.SCHOEPFER,J.M.LINDSTROM, REMARK 1 AUTH 2 B.M.CONTI-TRONCONI REMARK 1 TITL IDENTIFICATION OF SEQUENCE SEGMENTS FORMING THE REMARK 1 TITL 2 ALPHA-BUNGAROTOXIN BINDING SITES ON TWO NICOTINIC REMARK 1 TITL 3 ACETYLCHOLINE RECEPTOR ALPHA SUBUNITS FROM THE AVIAN BRAIN. REMARK 1 REF J.BIOL.CHEM. V. 266 15230 1991 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 3 REMARK 1 AUTH V.J.BASUS,M.BILLETER,R.A.LOVE,R.M.STROUD,I.D.KUNTZ REMARK 1 TITL STRUCTURAL STUDIES OF ALPHA-BUNGAROTOXIN. 1. REMARK 1 TITL 2 SEQUENCE-SPECIFIC 1H NMR RESONANCE ASSIGNMENTS. REMARK 1 REF BIOCHEMISTRY V. 27 2763 1988 REMARK 1 REFN ISSN 0006-2960 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : XWINNMR 2.1, CNS 1.0 REMARK 3 AUTHORS : BRUNGER, A.T., ET AL. (CNS) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: RMS DEVIATIONS FROM IDEAL VALUES: BOND REMARK 3 LENGTH(A) 0.0039, ANGLES(DEG) 0.61, IMPROPERS(DEG) 0.53 REMARK 4 REMARK 4 1KC4 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-NOV-01. REMARK 100 THE DEPOSITION ID IS D_1000014797. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 308 REMARK 210 PH : 5.5 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 1.6 MM ALPHA-BUNGAROTOXIN/[U REMARK 210 -15N]-ALPHA 7 19MER COMPLEX 30 REMARK 210 MM SODIUM PHOSPHATE, PH 5.5 50 REMARK 210 MICROMOLAR SODIUM AZIDE 50 REMARK 210 MICROMOLAR TMSP; 1.6 MM ALPHA- REMARK 210 BUNGAROTOXIN/[U-15N]-ALPHA 7 REMARK 210 19MER COMPLEX 30 MM SODIUM REMARK 210 PHOSPHATE, PH 5.5 50 MICROMOLAR REMARK 210 SODIUM AZIDE 50 MICROMOLAR TMSP REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY; 2D TOCSY; 3D_15N REMARK 210 -SEPARATED_NOESY; 3D_15N- REMARK 210 SEPARATED_TOCSY; 2D 1H-15N HSQC; REMARK 210 HNHA REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ; 400 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : NMRPIPE 1.8, SPARKY 3.87 REMARK 210 METHOD USED : DISTANCE GEOMETRY DYNAMICAL REMARK 210 SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : NULL REMARK 210 CONFORMERS, NUMBER SUBMITTED : 10 REMARK 210 CONFORMERS, SELECTION CRITERIA : THE SUBMITTED CONFORMER MODELS REMARK 210 ARE THE 10 WITH THE LOWEST REMARK 210 ENERGY FROM A POOL OF OVER 100 REMARK 210 ACCEPTED STRUCTURES THAT HAD NO REMARK 210 RESTRAINT VIOLATIONS. REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: THE WELL-DEFINED REGIONS IN THE COMPLEX, EXHIBITING REMARK 210 EXTENSIVE LONG RANGE NOES, ARE: BGTX: 1-16, 22-28, 39-48, AND 54- REMARK 210 68 ALPHA 7 19MER: 185-194 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 465 SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 MODELS 1-10 REMARK 465 RES C SSSEQI REMARK 465 HSL B 197 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 O LYS B 191 H TYR B 194 1.52 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 HIS A 4 166.57 -45.45 REMARK 500 1 ALA A 7 45.14 76.08 REMARK 500 1 SER A 9 -61.05 -177.47 REMARK 500 1 ILE A 11 106.98 -53.71 REMARK 500 1 ALA A 13 125.54 82.82 REMARK 500 1 CYS A 16 65.23 -160.23 REMARK 500 1 PRO A 17 49.10 -105.14 REMARK 500 1 ASN A 21 67.02 -159.81 REMARK 500 1 LEU A 22 -174.40 -66.90 REMARK 500 1 CYS A 29 -55.64 -144.38 REMARK 500 1 ASP A 30 149.95 62.43 REMARK 500 1 ALA A 31 68.80 75.78 REMARK 500 1 PHE A 32 88.87 53.04 REMARK 500 1 CYS A 33 21.42 -143.98 REMARK 500 1 SER A 34 -99.33 179.47 REMARK 500 1 SER A 35 -56.44 -141.45 REMARK 500 1 ARG A 36 51.85 -92.11 REMARK 500 1 VAL A 40 50.86 -161.56 REMARK 500 1 GLU A 41 85.67 -62.74 REMARK 500 1 LEU A 42 178.69 -58.04 REMARK 500 1 CYS A 48 60.46 -112.98 REMARK 500 1 PRO A 49 -170.64 -49.36 REMARK 500 1 SER A 50 131.98 -176.60 REMARK 500 1 LYS A 51 -159.80 -176.14 REMARK 500 1 LYS A 52 75.37 -105.24 REMARK 500 1 TYR A 54 -0.06 66.85 REMARK 500 1 GLU A 55 86.82 154.90 REMARK 500 1 GLU A 56 -150.80 -161.16 REMARK 500 1 CYS A 60 102.36 175.32 REMARK 500 1 SER A 61 -143.13 -78.87 REMARK 500 1 THR A 62 -88.85 81.82 REMARK 500 1 ASP A 63 136.93 175.09 REMARK 500 1 HIS A 68 -57.62 104.71 REMARK 500 1 LYS B 181 85.52 -157.66 REMARK 500 1 THR B 183 71.19 -160.13 REMARK 500 1 GLU B 184 -72.24 -107.93 REMARK 500 1 TYR B 187 -147.20 -126.34 REMARK 500 1 CYS B 189 -25.86 170.62 REMARK 500 1 CYS B 190 20.67 -146.63 REMARK 500 1 TYR B 194 -77.56 15.15 REMARK 500 1 PRO B 195 99.16 -55.40 REMARK 500 2 HIS A 4 166.74 -49.98 REMARK 500 2 THR A 5 -55.24 -164.94 REMARK 500 2 THR A 6 75.24 -35.08 REMARK 500 2 SER A 9 -63.72 -173.11 REMARK 500 2 SER A 12 -152.37 -123.61 REMARK 500 2 PRO A 17 164.08 -42.92 REMARK 500 2 CYS A 29 -58.95 138.41 REMARK 500 2 ASP A 30 -169.85 46.23 REMARK 500 2 ALA A 31 -72.10 68.37 REMARK 500 REMARK 500 THIS ENTRY HAS 413 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1ABT RELATED DB: PDB REMARK 900 1ABT IS ALPHA-BUNGAROTOXIN COMPLEXED WITH THE 185 - 196 FRAGMENT OF REMARK 900 THE -SUBUNIT OF THE TORPEDO NICOTINIC ACETYLCHOLINE RECEPTOR (NMR, REMARK 900 4 STRUCTURES) REMARK 900 RELATED ID: 1IDH RELATED DB: PDB REMARK 900 1IDH IS THE NMR SOLUTION STRUCTURE OF THE COMPLEX FORMED BETWEEN REMARK 900 ALPHA-BUNGAROTOXIN AND AN 18MER COGNATE PEPTIDE REMARK 900 RELATED ID: 2ABX RELATED DB: PDB REMARK 900 1ABX IS THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 A REMARK 900 RESOLUTION: RELATION TO SOLUTION STRUCTURE AND BINDING TO REMARK 900 ACETYLCHOLINE RECEPTOR. REMARK 900 RELATED ID: 1I9B RELATED DB: PDB REMARK 900 1I9B IS THE X-RAY STRUCTURE OF ACETYLCHOLINE BINDING PROTEIN (ACHBP) REMARK 900 RELATED ID: 1HAJ RELATED DB: PDB REMARK 900 1HAJ IS A BETA-HAIRPIN STRUCTURE IN A 13-MER PEPTIDE THAT BINDS A- REMARK 900 BUNGAROTOXIN WITH HIGH AFFINITY AND NEUTRALIZES ITS TOXICITY. REMARK 900 RELATED ID: 1HC9 RELATED DB: PDB REMARK 900 1HC9 IS A-BUNGAROTOXIN COMPLEXED WITH HIGH AFFINITY PEPTIDE. REMARK 900 RELATED ID: 1BXP RELATED DB: PDB REMARK 900 1BXP IS THE SOLUTION NMR STRUCTURE OF THE COMPLEX OF ALPHA- REMARK 900 BUNGAROTOXIN WITH A LIBRARY DERIVED PEPTIDE, 20 STRUCTURES. REMARK 900 RELATED ID: 1JBD RELATED DB: PDB REMARK 900 1JBD IS THE NMR STRUCTURE OF THE COMPLEX BETWEEN ALPHA-BUNGAROTOXIN REMARK 900 AND A MIMOTOPE OF THE NICOTINIC ACETILCHOLINE RECEPTOR. REMARK 900 RELATED ID: 1IKC RELATED DB: PDB REMARK 900 1IKC IS THE NMR STRUCTURE OF ALPHA-BUNGAROTOXIN. REMARK 900 RELATED ID: 1KFH RELATED DB: PDB REMARK 900 1KFH IS THE SOLUTION STRUCTURE OF ALPHA-BUNGAROTOXIN BY NMR REMARK 900 SPECTROSCOPY. REMARK 900 RELATED ID: 1KL8 RELATED DB: PDB REMARK 900 1KL8 IS THE NMR STRUCTURAL ANALYSIS OF THE COMPLEX FORMED BETWEEN REMARK 900 ALPHA-BUNGAROTOXIN AND THE PRINCIPAL ALPHA-NEUROTOXIN BINDING REMARK 900 SEQUENCE ON THE ALPHA7 SUBUNIT OF A NEURONAL NICOTINIC REMARK 900 ACETYLCHOLINE RECEPTOR DBREF 1KC4 A 1 74 UNP P60615 NXL1A_BUNMU 1 74 DBREF 1KC4 B 178 196 UNP P22770 ACHA7_CHICK 201 219 SEQADV 1KC4 HSL B 197 UNP P22770 ENGINEERED MUTATION SEQRES 1 A 74 ILE VAL CYS HIS THR THR ALA THR SER PRO ILE SER ALA SEQRES 2 A 74 VAL THR CYS PRO PRO GLY GLU ASN LEU CYS TYR ARG LYS SEQRES 3 A 74 MET TRP CYS ASP ALA PHE CYS SER SER ARG GLY LYS VAL SEQRES 4 A 74 VAL GLU LEU GLY CYS ALA ALA THR CYS PRO SER LYS LYS SEQRES 5 A 74 PRO TYR GLU GLU VAL THR CYS CYS SER THR ASP LYS CYS SEQRES 6 A 74 ASN PRO HIS PRO LYS GLN ARG PRO GLY SEQRES 1 B 20 ILE PRO GLY LYS ARG THR GLU SER PHE TYR GLU CYS CYS SEQRES 2 B 20 LYS GLU PRO TYR PRO ASP HSL SHEET 1 A 3 GLU A 41 ALA A 45 0 SHEET 2 A 3 LEU A 22 LYS A 26 -1 N LEU A 22 O ALA A 45 SHEET 3 A 3 VAL A 57 THR A 58 -1 O THR A 58 N ARG A 25 SSBOND 1 CYS A 3 CYS A 23 1555 1555 2.03 SSBOND 2 CYS A 16 CYS A 44 1555 1555 2.03 SSBOND 3 CYS A 29 CYS A 33 1555 1555 2.03 SSBOND 4 CYS A 48 CYS A 59 1555 1555 2.03 SSBOND 5 CYS A 60 CYS A 65 1555 1555 2.03 SSBOND 6 CYS B 189 CYS B 190 1555 1555 2.06 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