HEADER MEMBRANE PROTEIN 08-JUN-06 2H95 TITLE STRUCTURE OF THE AMANTADINE-BLOCKED INFLUENZA A M2 PROTON CHANNEL TITLE 2 TRANS-MEMBRANE DOMAIN BY SOLID-STATE NMR SPECTROSCOPY COMPND MOL_ID: 1; COMPND 2 MOLECULE: MATRIX PROTEIN 2; COMPND 3 CHAIN: A, B, C, D; COMPND 4 FRAGMENT: TRANSMEMBRANE DOMAIN (RESIDUES 26-43); COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THE PEPTIDE WAS SYNTHESIZED USING SOLID PHASE PEPTIDE SOURCE 4 SYNTHESIS. THIS SEQUENCE OCCURS NATURALLY IN THE INFLUENZA A VIRUS SOURCE 5 (UDORN/72). KEYWDS ALPHA HELIX, PROTEIN-LIGAND, MEMBRANE PROTEIN EXPDTA SOLID-STATE NMR AUTHOR J.HU,T.ASBURY,T.A.CROSS REVDAT 5 29-MAY-24 2H95 1 REMARK REVDAT 4 09-MAR-22 2H95 1 REMARK REVDAT 3 24-FEB-09 2H95 1 VERSN REVDAT 2 26-JUN-07 2H95 1 JRNL REVDAT 1 24-APR-07 2H95 0 JRNL AUTH J.HU,T.ASBURY,S.ACHUTHAN,C.LI,R.BERTRAM,J.R.QUINE,R.FU, JRNL AUTH 2 T.A.CROSS JRNL TITL BACKBONE STRUCTURE OF THE AMANTADINE-BLOCKED TRANS-MEMBRANE JRNL TITL 2 DOMAIN M2 PROTON CHANNEL FROM INFLUENZA A VIRUS. JRNL REF BIOPHYS.J. V. 92 4335 2007 JRNL REFN ISSN 0006-3495 JRNL PMID 17384070 JRNL DOI 10.1529/BIOPHYSJ.106.090183 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : XPLOR-NIH 2.9.9 REMARK 3 AUTHORS : SCHWIETERS, KUSZEWSKI, TJANDRA, CLORE REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REFINEMENT WAS CARRIED OUT IN VACUO ON REMARK 3 INITIAL MONOMER COORDINATES CONSISTING OF TWO ALPHA-HELICAL REMARK 3 FRAGMENTS (3.6 RESIDUES PER TURN) HAVING TILT AND ROTATIONAL REMARK 3 ORIENTATIONS WITH RESPECT TO THE BILAYER DERIVED FROM PISEMA REMARK 3 DIPOLAR WAVE ANALYSIS. ENERGY MINIMIZATION USED A GLOBAL PENALTY REMARK 3 FUNCTION INCORPORATING ORIENTATIONAL RESTRAINTS, HYDROGEN REMARK 3 BONDING AND THE CHARMM EMPIRICAL FUNCTION. THE ORIENTATIONAL REMARK 3 RESTRAINTS IMPOSED ON THE STRUCTURE DURING REFINEMENT ARE 16 15N REMARK 3 CHEMICAL SHIFTS AND 16 15N-1H DIPOLAR COUPLINGS FROM PISEMA REMARK 3 EXPERIMENTS. A SYMMETRIC, TETRAMERIC BUNDLE MODEL OF M2-TMD WAS REMARK 3 CONSTRUCTED BY A SERIES OF RIGID-BODY TRANSFORMATIONS OF THE REMARK 3 REFINED M2-TMD MONOMER. THE RESULTING HOMO-TETRAMER IS THE REMARK 3 LOWEST FREE ENERGY CONFORMER BASED ON ROTATIONAL CONFORMATIONAL REMARK 3 SEARCH. NOTE THAT THE HIS37 AND TRP41 SIDECHAIN POSITIONS ARE REMARK 3 CONSISTENT WITH MEASURED ORIENTATIONAL CONSTRAINTS. THE REMARK 3 ROTAMERIC STATES OF OTHER RESIDUES ARE TAKEN FROM A BACKBONE REMARK 3 DEPENDENT SIDECHAIN ROTAMER LIBRARY (SCRWL). REMARK 4 REMARK 4 2H95 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-JUN-06. REMARK 100 THE DEPOSITION ID IS D_1000038085. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 308 REMARK 210 PH : 8.8 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : M2-TMD (~120 MG) AND DMPC (~75 REMARK 210 MG) WERE FIRST CO-DISSOLVED IN REMARK 210 10 ML TFE, FOLLOWED BY THE REMARK 210 REMOVAL OF THE SOLVENT UNDER REMARK 210 VACUUM. THE PEPTIDE/LIPID REMARK 210 MIXTURE WAS REHYDRATED AND REMARK 210 SONICATED TO MAKE LIPOSOMES IN A REMARK 210 CITRATE-BORATE-PHOSPHATE (CBP) REMARK 210 BUFFER (PH 8.8) WITH 1 MM EDTA REMARK 210 AND 10 MM AMANTADINE AT 310 K. REMARK 210 THE LIPOSOMES WERE PELLETED BY REMARK 210 ULTRACENTRIFUGATION . THEN THE REMARK 210 PELLET WAS SPREAD ON GLASS REMARK 210 SLIDES AND DEHYDRATED IN A 75% REMARK 210 HUMIDITY CHAMBER. THE DEHYDRATED REMARK 210 SLIDES WERE REHYDRATED WITH 1.5 REMARK 210 MICROL LITER CBP BUFFER PER REMARK 210 SLIDE FOLLOWED BY BEING STACKED REMARK 210 INTO A GLASS TUBE AND INCUBATED REMARK 210 AT 316 K FOR 24 HOURS IN 96% REMARK 210 RELATIVE HUMIDITY. FINALLY, THE REMARK 210 GLASS TUBE WAS SEALED AT BOTH REMARK 210 ENDS WITH EPOXY AND TWO REMARK 210 GLASSCAPS. REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : SOLID-STATE NMR PISEMA REMARK 210 SPECTROMETER FIELD STRENGTH : 400 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : NULL REMARK 210 METHOD USED : ENERGY MINIMIZATION WITH REMARK 210 ORIENTATIONAL CONSTRAINTS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 72 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 1 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST REMARK 210 ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL REMARK 217 REMARK 217 SOLID STATE NMR STUDY REMARK 217 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLID REMARK 217 STATE NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 217 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 217 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: TETRAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D 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 DBREF 2H95 A 26 43 UNP P35938 M2_IAUSS 26 43 DBREF 2H95 B 26 43 UNP P35938 M2_IAUSS 26 43 DBREF 2H95 C 26 43 UNP P35938 M2_IAUSS 26 43 DBREF 2H95 D 26 43 UNP P35938 M2_IAUSS 26 43 SEQRES 1 A 18 LEU VAL VAL ALA ALA SER ILE ILE GLY ILE LEU HIS LEU SEQRES 2 A 18 ILE LEU TRP ILE LEU SEQRES 1 B 18 LEU VAL VAL ALA ALA SER ILE ILE GLY ILE LEU HIS LEU SEQRES 2 B 18 ILE LEU TRP ILE LEU SEQRES 1 C 18 LEU VAL VAL ALA ALA SER ILE ILE GLY ILE LEU HIS LEU SEQRES 2 C 18 ILE LEU TRP ILE LEU SEQRES 1 D 18 LEU VAL VAL ALA ALA SER ILE ILE GLY ILE LEU HIS LEU SEQRES 2 D 18 ILE LEU TRP ILE LEU HELIX 1 1 LEU A 26 LEU A 43 1 18 HELIX 2 2 LEU B 26 LEU B 43 1 18 HELIX 3 3 LEU C 26 LEU C 43 1 18 HELIX 4 4 LEU D 26 LEU D 43 1 18 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