HEADER    ACETYLCHOLINE RECEPTOR                  09-MAR-99   1CEK              
TITLE     THREE-DIMENSIONAL STRUCTURE OF THE MEMBRANE-EMBEDDED M2 CHANNEL-LINING
TITLE    2 SEGMENT FROM THE NICOTINIC ACETYLCHOLINE RECEPTOR BY SOLID-STATE NMR 
TITLE    3 SPECTROSCOPY                                                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (ACETYLCHOLINE RECEPTOR M2);                       
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: M2 DOMAIN;                                                 
COMPND   5 SYNONYM: ACHR M2;                                                    
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS;                              
SOURCE   3 ORGANISM_COMMON: NORWAY RAT;                                         
SOURCE   4 ORGANISM_TAXID: 10116;                                               
SOURCE   5 ORGAN: BRAIN;                                                        
SOURCE   6 CELL: NEURON;                                                        
SOURCE   7 CELLULAR_LOCATION: POST-SYNAPTIC MEMBRANE;                           
SOURCE   8 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21;                            
SOURCE   9 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE  10 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE  11 EXPRESSION_SYSTEM_VECTOR_TYPE: BACTERIAL;                            
SOURCE  12 EXPRESSION_SYSTEM_PLASMID: PGEX FUSION                               
KEYWDS    ACETYLCHOLINE RECEPTOR, M2, LIPID BILAYERS, ION-CHANNEL               
EXPDTA    SOLID-STATE NMR                                                       
AUTHOR    F.M.MARASSI,J.J.GESELL,Y.KIM,A.P.VALENTE,M.OBLATT-MONTAL,M.MONTAL,    
AUTHOR   2 S.J.OPELLA                                                           
REVDAT   5   27-DEC-23 1CEK    1       REMARK                                   
REVDAT   4   16-FEB-22 1CEK    1       REMARK SEQADV                            
REVDAT   3   24-FEB-09 1CEK    1       VERSN                                    
REVDAT   2   09-APR-99 1CEK    1       JRNL                                     
REVDAT   1   11-MAR-99 1CEK    0                                                
JRNL        AUTH   S.J.OPELLA,F.M.MARASSI,J.J.GESELL,A.P.VALENTE,Y.KIM,         
JRNL        AUTH 2 M.OBLATT-MONTAL,M.MONTAL                                     
JRNL        TITL   STRUCTURES OF THE M2 CHANNEL-LINING SEGMENTS FROM NICOTINIC  
JRNL        TITL 2 ACETYLCHOLINE AND NMDA RECEPTORS BY NMR SPECTROSCOPY.        
JRNL        REF    NAT.STRUCT.BIOL.              V.   6   374 1999              
JRNL        REFN                   ISSN 1072-8368                               
JRNL        PMID   10201407                                                     
JRNL        DOI    10.1038/7610                                                 
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   F.M.MARASSI,J.J.GESELL,A.P.VALENTE,Y.KIM,M.OBLATT-MONTAL,    
REMARK   1  AUTH 2 M.MONTAL,S.J.OPELLA                                          
REMARK   1  TITL   DILUTE SPIN-EXCHANGE ASSIGNMENT OF SOLID-STATE NMR SPECTRA   
REMARK   1  TITL 2 OF ORIENTED PROTEINS: ACETYLCHOLINE RECEPTOR M2 PEPTIDE IN   
REMARK   1  TITL 3 BILAYERS                                                     
REMARK   1  REF    TO BE PUBLISHED                                              
REMARK   1  REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : FISI, RESTRICT                                       
REMARK   3   AUTHORS     : NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1CEK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB.                               
REMARK 100 THE DEPOSITION ID IS D_1000000606.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : 295                                
REMARK 210  PH                             : 6.0                                
REMARK 210  IONIC STRENGTH                 : NULL                               
REMARK 210  PRESSURE                       : NULL                               
REMARK 210  SAMPLE CONTENTS                : DMPC                               
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : 15N SHIFT/1H-15N DIPOLAR           
REMARK 210                                   COUPLING PISEMA; 15N SHIFT/15N     
REMARK 210                                   SHIFT HETCOR; 1H SHIFT/15N SHIFT/  
REMARK 210                                   1H-15N DIPOLAR COUPLING            
REMARK 210                                   CORRELATION                        
REMARK 210  SPECTROMETER FIELD STRENGTH    : 400 MHZ; 550 MHZ                   
REMARK 210  SPECTROMETER MODEL             : HOMEBUILT; CMX400                  
REMARK 210  SPECTROMETER MANUFACTURER      : HOME-BUILT; CHEMAGNETICS           
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : BACKTOR, RESTRICT                  
REMARK 210   METHOD USED                   : ORIENTATIONAL CONSTRAINTS          
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : 24                                 
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 1                                  
REMARK 210 CONFORMERS, SELECTION CRITERIA  : LOWEST ENERGY                      
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL                
REMARK 210                                                                      
REMARK 210 REMARK: LOWEST ENERGY. SAMPLE: DMPC BILAYERS ORIENTED ON GLASS       
REMARK 210  SLIDES 15N CHEMICAL SHIFT, 1H CHEMICAL SHIFT AND 1H-15N DIPOLAR     
REMARK 210  COUPLING FREQUENCIES WERE MEASURED FROM PISEMA AND                  
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: 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 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     RES C SSSEQI                                                     
REMARK 465     GLY A     1                                                      
REMARK 465     SER A     2                                                      
REMARK 465     GLU A     3                                                      
REMARK 465     LYS A     4                                                      
REMARK 465     MET A     5                                                      
REMARK 465     SER A     6                                                      
REMARK 465     THR A    22                                                      
REMARK 465     SER A    23                                                      
REMARK 465     GLN A    24                                                      
REMARK 465     ARG A    25                                                      
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     RES CSSEQI  ATOMS                                                
REMARK 470     THR A   7    N    CB   OG1  CG2                                  
REMARK 470     ALA A   8    CB                                                  
REMARK 470     ILE A   9    CB   CG1  CG2  CD1                                  
REMARK 470     SER A  10    CB   OG                                             
REMARK 470     VAL A  11    CB   CG1  CG2                                       
REMARK 470     LEU A  12    CB   CG   CD1  CD2                                  
REMARK 470     LEU A  13    CB   CG   CD1  CD2                                  
REMARK 470     ALA A  14    CB                                                  
REMARK 470     GLN A  15    CB   CG   CD   OE1  NE2                             
REMARK 470     ALA A  16    CB                                                  
REMARK 470     VAL A  17    CB   CG1  CG2                                       
REMARK 470     PHE A  18    CB   CG   CD1  CD2  CE1  CE2  CZ                    
REMARK 470     LEU A  19    CB   CG   CD1  CD2                                  
REMARK 470     LEU A  20    CB   CG   CD1  CD2                                  
REMARK 470     LEU A  21    C    O    CB   CG   CD1  CD2                        
DBREF  1CEK A    1    25  UNP    P25110   ACHD_RAT       274    298             
SEQADV 1CEK GLY A    1  UNP  P25110    CYS   274 CLONING ARTIFACT               
SEQADV 1CEK SER A    2  UNP  P25110    GLY   275 CLONING ARTIFACT               
SEQADV 1CEK MET A    5  UNP  P25110    THR   278 CONFLICT                       
SEQADV 1CEK THR A    7  UNP  P25110    VAL   280 CONFLICT                       
SEQADV 1CEK ALA A   16  UNP  P25110    SER   289 CONFLICT                       
SEQADV 1CEK THR A   22  UNP  P25110    ILE   295 CONFLICT                       
SEQADV 1CEK GLN A   24  UNP  P25110    LYS   297 CONFLICT                       
SEQRES   1 A   25  GLY SER GLU LYS MET SER THR ALA ILE SER VAL LEU LEU          
SEQRES   2 A   25  ALA GLN ALA VAL PHE LEU LEU LEU THR SER GLN ARG              
HELIX    1   1 THR A    7  LEU A   21  1SEE REMARK 650                    15    
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                         
ATOM      1  CA  THR A   7      -0.360   0.941  -2.200  1.00  0.00           C  
ATOM      2  C   THR A   7       0.085  -0.223  -1.315  1.00  0.00           C  
ATOM      3  O   THR A   7       0.492  -1.284  -1.812  1.00  0.00           O  
ATOM      4  N   ALA A   8       0.000   0.000   0.000  1.00  0.00           N  
ATOM      5  CA  ALA A   8       0.389  -1.016   0.957  1.00  0.00           C  
ATOM      6  C   ALA A   8      -0.592  -2.186   0.907  1.00  0.00           C  
ATOM      7  O   ALA A   8      -0.344  -3.253   1.487  1.00  0.00           O  
ATOM      8  H   ALA A   8      -0.339   0.884   0.375  1.00  0.00           H  
ATOM      9  N   ILE A   9      -1.707  -1.957   0.203  1.00  0.00           N  
ATOM     10  CA  ILE A   9      -2.726  -2.977   0.071  1.00  0.00           C  
ATOM     11  C   ILE A   9      -2.500  -3.779  -1.209  1.00  0.00           C  
ATOM     12  O   ILE A   9      -2.971  -4.917  -1.341  1.00  0.00           O  
ATOM     13  H   ILE A   9      -1.880  -1.066  -0.261  1.00  0.00           H  
ATOM     14  N   SER A  10      -1.769  -3.159  -2.142  1.00  0.00           N  
ATOM     15  CA  SER A  10      -1.475  -3.800  -3.407  1.00  0.00           C  
ATOM     16  C   SER A  10      -0.471  -4.934  -3.196  1.00  0.00           C  
ATOM     17  O   SER A  10      -0.521  -5.966  -3.880  1.00  0.00           O  
ATOM     18  H   SER A  10      -1.396  -2.221  -2.002  1.00  0.00           H  
ATOM     19  N   VAL A  11       0.436  -4.717  -2.238  1.00  0.00           N  
ATOM     20  CA  VAL A  11       1.449  -5.706  -1.930  1.00  0.00           C  
ATOM     21  C   VAL A  11       0.792  -6.983  -1.406  1.00  0.00           C  
ATOM     22  O   VAL A  11       1.234  -8.097  -1.708  1.00  0.00           O  
ATOM     23  H   VAL A  11       0.448  -3.855  -1.694  1.00  0.00           H  
ATOM     24  N   LEU A  12      -0.268  -6.793  -0.617  1.00  0.00           N  
ATOM     25  CA  LEU A  12      -0.988  -7.915  -0.048  1.00  0.00           C  
ATOM     26  C   LEU A  12      -1.426  -8.871  -1.157  1.00  0.00           C  
ATOM     27  O   LEU A  12      -1.260 -10.040  -1.075  1.00  0.00           O  
ATOM     28  H   LEU A  12      -0.065  -5.862  -0.388  1.00  0.00           H  
ATOM     29  N   LEU A  13      -1.985  -8.345  -2.190  1.00  0.00           N  
ATOM     30  CA  LEU A  13      -2.448  -9.137  -3.314  1.00  0.00           C  
ATOM     31  C   LEU A  13      -1.289  -9.948  -3.894  1.00  0.00           C  
ATOM     32  O   LEU A  13      -1.480 -11.064  -4.398  1.00  0.00           O  
ATOM     33  H   LEU A  13      -2.108  -7.378  -2.227  1.00  0.00           H  
ATOM     34  N   ALA A  14      -0.089  -9.359  -3.811  1.00  0.00           N  
ATOM     35  CA  ALA A  14       1.099 -10.012  -4.321  1.00  0.00           C  
ATOM     36  C   ALA A  14       1.590 -11.062  -3.322  1.00  0.00           C  
ATOM     37  O   ALA A  14       2.231 -12.052  -3.699  1.00  0.00           O  
ATOM     38  H   ALA A  14       0.032  -8.439  -3.390  1.00  0.00           H  
ATOM     39  N   GLN A  15       1.272 -10.818  -2.044  1.00  0.00           N  
ATOM     40  CA  GLN A  15       1.671 -11.728  -0.988  1.00  0.00           C  
ATOM     41  C   GLN A  15       0.813 -12.992  -1.034  1.00  0.00           C  
ATOM     42  O   GLN A  15       1.327 -14.114  -1.007  1.00  0.00           O  
ATOM     43  H   GLN A  15       0.741  -9.993  -1.767  1.00  0.00           H  
ATOM     44  N   ALA A  16      -0.502 -12.781  -1.104  1.00  0.00           N  
ATOM     45  CA  ALA A  16      -1.437 -13.889  -1.154  1.00  0.00           C  
ATOM     46  C   ALA A  16      -1.343 -14.591  -2.510  1.00  0.00           C  
ATOM     47  O   ALA A  16      -1.864 -15.702  -2.690  1.00  0.00           O  
ATOM     48  H   ALA A  16      -0.894 -11.844  -1.125  1.00  0.00           H  
ATOM     49  N   VAL A  17      -0.669 -13.918  -3.451  1.00  0.00           N  
ATOM     50  CA  VAL A  17      -0.501 -14.465  -4.783  1.00  0.00           C  
ATOM     51  C   VAL A  17       0.619 -15.504  -4.784  1.00  0.00           C  
ATOM     52  O   VAL A  17       0.488 -16.586  -5.376  1.00  0.00           O  
ATOM     53  H   VAL A  17      -0.252 -13.006  -3.269  1.00  0.00           H  
ATOM     54  N   PHE A  18       1.720 -15.149  -4.109  1.00  0.00           N  
ATOM     55  CA  PHE A  18       2.864 -16.036  -4.026  1.00  0.00           C  
ATOM     56  C   PHE A  18       2.470 -17.334  -3.319  1.00  0.00           C  
ATOM     57  O   PHE A  18       2.741 -18.434  -3.806  1.00  0.00           O  
ATOM     58  H   PHE A  18       1.796 -14.250  -3.633  1.00  0.00           H  
ATOM     59  N   LEU A  19       1.824 -17.176  -2.164  1.00  0.00           N  
ATOM     60  CA  LEU A  19       1.390 -18.320  -1.386  1.00  0.00           C  
ATOM     61  C   LEU A  19       0.495 -19.222  -2.237  1.00  0.00           C  
ATOM     62  O   LEU A  19       0.551 -20.395  -2.184  1.00  0.00           O  
ATOM     63  H   LEU A  19       1.617 -16.257  -1.791  1.00  0.00           H  
ATOM     64  N   LEU A  20      -0.326 -18.647  -3.018  1.00  0.00           N  
ATOM     65  CA  LEU A  20      -1.231 -19.383  -3.879  1.00  0.00           C  
ATOM     66  C   LEU A  20      -0.446 -20.069  -4.998  1.00  0.00           C  
ATOM     67  O   LEU A  20      -0.758 -21.201  -5.396  1.00  0.00           O  
ATOM     68  H   LEU A  20      -0.347 -17.678  -3.038  1.00  0.00           H  
ATOM     69  N   LEU A  21       0.575 -19.356  -5.492  1.00  0.00           N  
ATOM     70  CA  LEU A  21       1.405 -19.882  -6.557  1.00  0.00           C  
ATOM     71  H   LEU A  21       0.805 -18.427  -5.142  1.00  0.00           H  
TER      72      LEU A  21                                                      
MASTER      114    0    0    1    0    0    0    6   57    1    0    2          
END