PDB Short entry for 2M9A
HEADER    METAL BINDING PROTEIN                   05-JUN-13   2M9A              
TITLE     SOLUTION NMR STRUCTURE OF E3 UBIQUITIN-PROTEIN LIGASE ZFP91 FROM HOMO 
TITLE    2 SAPIENS, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM (NESG) TARGET      
TITLE    3 HR7784A                                                              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: E3 UBIQUITIN-PROTEIN LIGASE ZFP91;                         
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: UNP RESIDUES 370-456;                                      
COMPND   5 SYNONYM: ZINC FINGER PROTEIN 757, ZINC FINGER PROTEIN 91 HOMOLOG,    
COMPND   6 ZFP-91;                                                              
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: FKSG11, ZFP91, ZNF757;                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR: PET15_NESG                                 
KEYWDS    PSI:BIOLOGY, C2H2, HR7784A, PSI-BIOLOGY, NORTHEAST STRUCTURAL         
KEYWDS   2 GENOMICS CONSORTIUM, NESG, METAL BINDING PROTEIN                     
EXPDTA    SOLUTION NMR                                                          
NUMMDL    20                                                                    
AUTHOR    K.PEDERSON,R.SHASTRY,E.KOHAN,H.JANJUA,R.XIAO,T.B.ACTON,J.K.EVERETT,   
AUTHOR   2 G.T.MONTELIONE,J.H.PRESTEGARD,NORTHEAST STRUCTURAL GENOMICS          
AUTHOR   3 CONSORTIUM (NESG)                                                    
REVDAT   1   24-JUL-13 2M9A    0                                                
JRNL        AUTH   K.PEDERSON,G.T.MONTELIONE,J.H.PRESTEGARD                     
JRNL        TITL   SOLUTION STRUCTURE OF HR7784A                                
JRNL        REF    TO BE PUBLISHED                                              
JRNL        REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.3                                              
REMARK   3   AUTHORS     : BRUNGER, ADAMS, CLORE, GROS, NILGES AND READ         
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2M9A COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-JUN-13.                  
REMARK 100 THE RCSB ID CODE IS RCSB103370.                                      
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : 298                                
REMARK 210  PH                             : 6.5                                
REMARK 210  IONIC STRENGTH                 : 100                                
REMARK 210  PRESSURE                       : AMBIENT                            
REMARK 210  SAMPLE CONTENTS                : 1.17 MM [U-100% 13C; U-100% 15N]   
REMARK 210                                   HR7784A, 20 MM MES, 100 MM SODIUM  
REMARK 210                                   CHLORIDE, 5 MM CALCIUM CHLORIDE,   
REMARK 210                                   10 MM DTT, 0.02 % SODIUM AZIDE,    
REMARK 210                                   50 UM DSS, 95% H2O/5% D2O; 0.66    
REMARK 210                                   MM [U-100% 15N] HR7784A, 20 MM     
REMARK 210                                   MES, 100 MM SODIUM CHLORIDE, 5 MM  
REMARK 210                                   CALCIUM CHLORIDE, 10 MM DTT, 4.2   
REMARK 210                                   % C12E5, 0.02 % SODIUM AZIDE, 50   
REMARK 210                                   UM DSS, 95% H2O/5% D2O; 0.66 MM    
REMARK 210                                   [U-100% 13C; U-100% 15N] HR7784A,  
REMARK 210                                   20 MM MES, 100 MM SODIUM           
REMARK 210                                   CHLORIDE, 5 MM CALCIUM CHLORIDE,   
REMARK 210                                   10 MM DTT, 0.02 % SODIUM AZIDE,    
REMARK 210                                   50 UM DSS, 5 % POSITIVELY CHARGED  
REMARK 210                                   POLYACRYLAMIDE GEL, 95% H2O/5% D2O 
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : 2D 1H-15N HSQC; 2D 1H-13C HSQC     
REMARK 210                                   AROMATIC; 3D CBCA(CO)NH; 3D        
REMARK 210                                   HNCACB; 3D HNCO; 3D H(CCO)NH; 3D   
REMARK 210                                   HCCH-TOCSY; 3D 1H-15N NOESY; 3D    
REMARK 210                                   1H-13C NOESY ALIPHATIC; 3D 1H-13C  
REMARK 210                                   NOESY AROMATIC; 2D CB(CGCD)HD; 2D  
REMARK 210                                   CB(CGCDCE)HE; 2D 1H-15N J-         
REMARK 210                                   MODULATION HSQC                    
REMARK 210  SPECTROMETER FIELD STRENGTH    : 600 MHZ                            
REMARK 210  SPECTROMETER MODEL             : INOVA                              
REMARK 210  SPECTROMETER MANUFACTURER      : VARIAN                             
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : CYANA 3.0, NMRPIPE, SPARKY         
REMARK 210                                   3.113, PSVS 1.4                    
REMARK 210   METHOD USED                   : SIMULATED ANNEALING                
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : 50                                 
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 20                                 
REMARK 210 CONFORMERS, SELECTION CRITERIA  : STRUCTURES WITH THE LEAST          
REMARK 210                                   RESTRAINT VIOLATIONS               
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 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 1-20                                                        
REMARK 465     RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     GLY A     2                                                      
REMARK 465     HIS A     3                                                      
REMARK 465     HIS A     4                                                      
REMARK 465     HIS A     5                                                      
REMARK 465     HIS A     6                                                      
REMARK 465     HIS A     7                                                      
REMARK 465     HIS A     8                                                      
REMARK 465     SER A     9                                                      
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 MET A  11      -55.16   -138.67                                   
REMARK 500  1 CYS A  16       52.81    -90.13                                   
REMARK 500  1 GLU A  17      -53.12     56.76                                   
REMARK 500  1 TYR A  18      -45.23   -134.44                                   
REMARK 500  1 ALA A  22      130.06   -172.55                                   
REMARK 500  1 ARG A  33        6.82    -68.76                                   
REMARK 500  1 MET A  34      -15.67    -45.91                                   
REMARK 500  1 LYS A  40       99.80     67.17                                   
REMARK 500  1 PRO A  41     -147.76    -69.87                                   
REMARK 500  1 GLU A  45       29.31    -79.52                                   
REMARK 500  1 CYS A  47     -134.29   -175.97                                   
REMARK 500  1 PHE A  49      113.37    176.90                                   
REMARK 500  1 ASP A  67       71.68     57.76                                   
REMARK 500  1 TYR A  70      -96.98   -125.54                                   
REMARK 500  1 GLN A  71      -82.67   -118.23                                   
REMARK 500  1 LYS A  80      122.34     75.11                                   
REMARK 500  2 GLU A  17      -53.75    172.15                                   
REMARK 500  2 TYR A  18      -45.69   -140.59                                   
REMARK 500  2 ARG A  21      -81.16    -68.65                                   
REMARK 500  2 MET A  34      -15.19    -43.97                                   
REMARK 500  2 GLU A  39      -30.23   -169.74                                   
REMARK 500  2 LYS A  40       97.92     66.53                                   
REMARK 500  2 GLU A  45       40.63    -88.25                                   
REMARK 500  2 CYS A  47     -124.33   -175.57                                   
REMARK 500  2 PHE A  49      115.95    177.57                                   
REMARK 500  2 ASP A  67      -36.01     75.99                                   
REMARK 500  2 LYS A  80      116.81     72.54                                   
REMARK 500  3 MET A  11      -54.03   -128.19                                   
REMARK 500  3 GLU A  17      -20.53     97.59                                   
REMARK 500  3 TYR A  18      -51.50   -135.90                                   
REMARK 500  3 ARG A  21     -168.23    -77.13                                   
REMARK 500  3 ARG A  33        2.37    -65.29                                   
REMARK 500  3 MET A  34      -19.48    -44.81                                   
REMARK 500  3 LYS A  40       98.30     66.42                                   
REMARK 500  3 CYS A  47     -107.15   -119.65                                   
REMARK 500  3 PHE A  49      111.26    168.45                                   
REMARK 500  3 ASP A  67       17.71     57.57                                   
REMARK 500  3 TYR A  70      -86.53    -79.30                                   
REMARK 500  3 GLN A  71      -95.33   -112.33                                   
REMARK 500  3 LYS A  80      116.69     74.13                                   
REMARK 500  4 MET A  11      -41.12   -165.44                                   
REMARK 500  4 ASP A  13      103.51   -172.95                                   
REMARK 500  4 TYR A  18      -50.48   -136.16                                   
REMARK 500  4 ARG A  21      -77.95    -70.30                                   
REMARK 500  4 MET A  34      -12.91    -47.44                                   
REMARK 500  4 GLU A  39       76.87   -103.80                                   
REMARK 500  4 GLU A  45       42.26    -87.11                                   
REMARK 500  4 CYS A  47     -136.79    173.71                                   
REMARK 500  4 PHE A  49      112.02    179.70                                   
REMARK 500  4 GLN A  71      -81.68    -79.57                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     247 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 HIS A   36     THR A   37          9      -149.74                    
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 15 HIS A  64         0.10    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                           1  ZN A 102  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  60   NE2                                                    
REMARK 620 2 HIS A  64   NE2 109.0                                              
REMARK 620 3 CYS A  47   SG  109.5 112.2                                        
REMARK 620 4 CYS A  44   SG  105.4 110.5 109.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                           1  ZN A 103  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  90   NE2                                                    
REMARK 620 2 HIS A  95   NE2 112.6                                              
REMARK 620 3 CYS A  77   SG  108.2 110.7                                        
REMARK 620 4 CYS A  74   SG  106.8 107.9 110.6                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                           1  ZN A 101  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  32   NE2                                                    
REMARK 620 2 HIS A  36   NE2 115.5                                              
REMARK 620 3 CYS A  16   SG  106.6 108.6                                        
REMARK 620 4 CYS A  19   SG  108.0 107.2 111.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 101                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 103                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 102                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 19288   RELATED DB: BMRB                                 
REMARK 900 RELATED ID: NESG-HR7784A   RELATED DB: TARGETTRACK                   
DBREF  2M9A A   12    98  UNP    Q96JP5   ZFP91_HUMAN    370    456             
SEQADV 2M9A MET A    1  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A GLY A    2  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    3  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    4  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    5  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    6  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    7  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A    8  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A SER A    9  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A HIS A   10  UNP  Q96JP5              EXPRESSION TAG                 
SEQADV 2M9A MET A   11  UNP  Q96JP5              EXPRESSION TAG                 
SEQRES   1 A   98  MET GLY HIS HIS HIS HIS HIS HIS SER HIS MET ARG ASP          
SEQRES   2 A   98  TYR ILE CYS GLU TYR CYS ALA ARG ALA PHE LYS SER SER          
SEQRES   3 A   98  HIS ASN LEU ALA VAL HIS ARG MET ILE HIS THR GLY GLU          
SEQRES   4 A   98  LYS PRO LEU GLN CYS GLU ILE CYS GLY PHE THR CYS ARG          
SEQRES   5 A   98  GLN LYS ALA SER LEU ASN TRP HIS MET LYS LYS HIS ASP          
SEQRES   6 A   98  ALA ASP SER PHE TYR GLN PHE SER CYS ASN ILE CYS GLY          
SEQRES   7 A   98  LYS LYS PHE GLU LYS LYS ASP SER VAL VAL ALA HIS LYS          
SEQRES   8 A   98  ALA LYS SER HIS PRO GLU VAL                                  
HET     ZN  A 101       1                                                       
HET     ZN  A 103       1                                                       
HET     ZN  A 102       1                                                       
HETNAM      ZN ZINC ION                                                         
FORMUL   2   ZN    3(ZN 2+)                                                     
HELIX    1   1 SER A   25  ARG A   33  1                                   9    
HELIX    2   2 MET A   34  HIS A   36  5                                   3    
HELIX    3   3 GLN A   53  ALA A   66  1                                  14    
HELIX    4   4 LYS A   83  HIS A   95  1                                  13    
SHEET    1   A 2 LEU A  42  GLN A  43  0                                        
SHEET    2   A 2 THR A  50  CYS A  51 -1  O  CYS A  51   N  LEU A  42           
LINK         NE2 HIS A  60                ZN    ZN A 102     1555   1555  2.05  
LINK         NE2 HIS A  90                ZN    ZN A 103     1555   1555  2.05  
LINK         NE2 HIS A  64                ZN    ZN A 102     1555   1555  2.07  
LINK         NE2 HIS A  95                ZN    ZN A 103     1555   1555  2.08  
LINK         NE2 HIS A  32                ZN    ZN A 101     1555   1555  2.10  
LINK         NE2 HIS A  36                ZN    ZN A 101     1555   1555  2.10  
LINK         SG  CYS A  16                ZN    ZN A 101     1555   1555  2.33  
LINK         SG  CYS A  19                ZN    ZN A 101     1555   1555  2.33  
LINK         SG  CYS A  77                ZN    ZN A 103     1555   1555  2.33  
LINK         SG  CYS A  47                ZN    ZN A 102     1555   1555  2.33  
LINK         SG  CYS A  74                ZN    ZN A 103     1555   1555  2.33  
LINK         SG  CYS A  44                ZN    ZN A 102     1555   1555  2.34  
SITE     1 AC1  4 CYS A  16  CYS A  19  HIS A  32  HIS A  36                    
SITE     1 AC2  4 CYS A  74  CYS A  77  HIS A  90  HIS A  95                    
SITE     1 AC3  4 CYS A  44  CYS A  47  HIS A  60  HIS A  64                    
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