Here is a sample PDB file. This is Peanut Peroxidase, PDB-ID: 1SCH (note: some sections were shortened):

TITLE SECTION

HEADER    OXIDOREDUCTASE                          23-JAN-96   1SCH              
TITLE     PEANUT PEROXIDASE                                                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PEANUT PEROXIDASE, MAJOR CATIONIC ISOZYME;                 
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: PNP;                                                        
COMPND   5 EC: 1.11.1.7;                                                        
COMPND   6 OTHER_DETAILS: CARBOHYDRATE PRESENT. ONE N-ACETYL                    
COMPND   7 GLUCOSAMINE SUGAR RESIDUE MODELED AT ASN 144 OF CHAIN B.             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ARACHIS HYPOGAEA;                               
SOURCE   3 ORGANISM_COMMON: PEANUT;                                             
SOURCE   4 CELLULAR_LOCATION: SECRETED, EXTRACELLULAR;                          
SOURCE   5 OTHER_DETAILS: CULTURED PEANUT CELLS                                 
KEYWDS    CALCIUM BINDING, GLYCOSYLATION, PEROXIDASE,                           
KEYWDS   2 OXIDOREDUCTASE                                                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    D.J.SCHULLER,T.L.POULOS                                               
REVDAT   1   11-JUL-96 1SCH    0                                                
JRNL        AUTH   D.J.SCHULLER,N.BAN,R.B.VANHUYSTEE,A.MCPHERSON,               
JRNL        AUTH 2 T.L.POULOS                                                   
JRNL        TITL   THE CRYSTAL STRUCTURE OF PEANUT PEROXIDASE                   
JRNL        REF    STRUCTURE (LONDON)            V.   4   311 1996              
JRNL        REFN   ASTM STRUE6  UK ISSN 0969-2126                 2005          
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION. 2.7  ANGSTROMS.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.56                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.0                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.0                            
REMARK   3   COMPLETENESS FOR RANGE        (%) : 85.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 19414                          
REMARK   3                                                                                           

PRIMARY STRUCTURE SECTION

SEQRES   1 A  294  PCA LEU SER SER ASN PHE TYR ALA THR LYS CYS PRO ASN          
SEQRES   2 A  294  ALA LEU SER THR ILE LYS SER ALA VAL ASN SER ALA VAL          
SEQRES   3 A  294  ALA LYS GLU ALA ARG MET GLY ALA SER LEU LEU ARG LEU          
SEQRES   4 A  294  HIS PHE HIS ASP CYS PHE VAL GLN GLY CYS ASP ALA SER          
SEQRES   5 A  294  VAL LEU LEU ASP ASP THR SER ASN PHE THR GLY GLU LYS          
SEQRES   6 A  294  THR ALA GLY PRO ASN ALA ASN SER ILE ARG GLY PHE GLU          
SEQRES   7 A  294  VAL ILE ASP THR ILE LYS SER GLN VAL GLU SER LEU CYS          
SEQRES   8 A  294  PRO GLY VAL VAL SER CYS ALA ASP ILE LEU ALA VAL ALA          
SEQRES   9 A  294  ALA ARG ASP SER VAL VAL ALA LEU GLY GLY ALA SER TRP          
SEQRES  10 A  294  ASN VAL LEU LEU GLY ARG ARG ASP SER THR THR ALA SER          
SEQRES  11 A  294  LEU SER SER ALA ASN SER ASP LEU PRO ALA PRO PHE PHE          
SEQRES  12 A  294  ASN LEU SER GLY LEU ILE SER ALA PHE SER ASN LYS GLY          
SEQRES  13 A  294  PHE THR THR LYS GLU LEU VAL THR LEU SER GLY ALA HIS          
SEQRES  14 A  294  THR ILE GLY GLN ALA GLN CYS THR ALA PHE ARG THR ARG          
SEQRES  15 A  294  ILE TYR ASN GLU SER ASN ILE ASP PRO THR TYR ALA LYS          
SEQRES  16 A  294  SER LEU GLN ALA ASN CYS PRO SER VAL GLY GLY ASP THR          
SEQRES  17 A  294  ASN LEU SER PRO PHE ASP VAL THR THR PRO ASN LYS PHE          
SEQRES  18 A  294  ASP ASN ALA TYR TYR ILE ASN LEU ARG ASN LYS LYS GLY          
SEQRES  19 A  294  LEU LEU HIS SER ASP GLN GLN LEU PHE ASN GLY VAL SER          
SEQRES  20 A  294  THR ASP SER GLN VAL THR ALA TYR SER ASN ASN ALA ALA          
SEQRES  21 A  294  THR PHE ASN THR ASP PHE GLY ASN ALA MET ILE LYS MET          
SEQRES  22 A  294  GLY ASN LEU SER PRO LEU THR GLY THR SER GLY GLN ILE          
SEQRES  23 A  294  ARG THR ASN CYS ARG LYS THR ASN                              
SEQRES   1 B  294  PCA LEU SER SER ASN PHE TYR ALA THR LYS CYS PRO ASN          
SEQRES   2 B  294  ALA LEU SER THR ILE LYS SER ALA VAL ASN SER ALA VAL          
SEQRES   3 B  294  ALA LYS GLU ALA ARG MET GLY ALA SER LEU LEU ARG LEU          
SEQRES   4 B  294  HIS PHE HIS ASP CYS PHE VAL GLN GLY CYS ASP ALA SER          
SEQRES   5 B  294  VAL LEU LEU ASP ASP THR SER ASN PHE THR GLY GLU LYS          
SEQRES   6 B  294  THR ALA GLY PRO ASN ALA ASN SER ILE ARG GLY PHE GLU          
SEQRES   7 B  294  VAL ILE ASP THR ILE LYS SER GLN VAL GLU SER LEU CYS          
SEQRES   8 B  294  PRO GLY VAL VAL SER CYS ALA ASP ILE LEU ALA VAL ALA          
SEQRES   9 B  294  ALA ARG ASP SER VAL VAL ALA LEU GLY GLY ALA SER TRP          
SEQRES  10 B  294  ASN VAL LEU LEU GLY ARG ARG ASP SER THR THR ALA SER          
SEQRES  11 B  294  LEU SER SER ALA ASN SER ASP LEU PRO ALA PRO PHE PHE          
SEQRES  12 B  294  ASN LEU SER GLY LEU ILE SER ALA PHE SER ASN LYS GLY          
SEQRES  13 B  294  PHE THR THR LYS GLU LEU VAL THR LEU SER GLY ALA HIS          
SEQRES  14 B  294  THR ILE GLY GLN ALA GLN CYS THR ALA PHE ARG THR ARG          
SEQRES  15 B  294  ILE TYR ASN GLU SER ASN ILE ASP PRO THR TYR ALA LYS          
SEQRES  16 B  294  SER LEU GLN ALA ASN CYS PRO SER VAL GLY GLY ASP THR          
SEQRES  17 B  294  ASN LEU SER PRO PHE ASP VAL THR THR PRO ASN LYS PHE          
SEQRES  18 B  294  ASP ASN ALA TYR TYR ILE ASN LEU ARG ASN LYS LYS GLY          
SEQRES  19 B  294  LEU LEU HIS SER ASP GLN GLN LEU PHE ASN GLY VAL SER          
SEQRES  20 B  294  THR ASP SER GLN VAL THR ALA TYR SER ASN ASN ALA ALA          
SEQRES  21 B  294  THR PHE ASN THR ASP PHE GLY ASN ALA MET ILE LYS MET          
SEQRES  22 B  294  GLY ASN LEU SER PRO LEU THR GLY THR SER GLY GLN ILE          
SEQRES  23 B  294  ARG THR ASN CYS ARG LYS THR ASN                               
HET    PCA  A   1       8                                                       
HET    HEM  A 300      43     PROTOPORPHYRIN IX CONTAINS FE(II)                 
HET     CA  A 301       1                                                       
HET     CA  A 302       1                                                       
HET    PCA  B   1       8                                                       
HETNAM     PCA  PYROGLUTAMIC ACID                                               
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM      CA CALCIUM ION                                                      
HETNAM     NAG N-ACETYL-D-GLUCOSAMINE                                           
HETSYN     HEM HEME                                                             

SECONDARY STRUCTURE SECTION

    
HELIX    1   A ALA A   14  LYS A   28  1                                  15    
HELIX    2   B ARG A   31  PHE A   45  1                                  15    
HELIX    3   C PHE A   77  LEU A   90  1                                  14    
HELIX    4   D ALA A   98  LEU A  112  1                                  15    
HELIX    5  D' LEU A  131  ASP A  137  1                                   7    
HELIX    6   E SER A  146  ASN A  154  1                                   9    
HELIX    7   F THR A  159  SER A  166  1                                   8    
HELIX    8  F' PHE A  179  ASN A  185  1                                   7    
HELIX    9  F" THR A  192  ASN A  200  1                                   9    
HELIX   10   G ALA A  224  ARG A  230  1                                   7    
HELIX   11   H HIS A  237  GLN A  241  1                                   5    
HELIX   12   I ASP A  249  ASN A  257  1                                   9    
HELIX   13   J ALA A  259  MET A  273  1                                  15    
HELIX   14   A ALA B   14  LYS B   28  1                                  15    
HELIX   15   B ARG B   31  PHE B   45  1                                  15    
HELIX   16   C PHE B   77  LEU B   90  1                                  14    
HELIX   17   D ALA B   98  LEU B  112  1                                  15    
HELIX   18  D' LEU B  131  ASP B  137  1                                   7    
HELIX   19   E SER B  146  ASN B  154  1                                   9    
HELIX   20   F THR B  159  SER B  166  1                                   8    
HELIX   21  F' PHE B  179  ASN B  185  1                                   7    
HELIX   22  F" THR B  192  ASN B  200  1                                   9    
HELIX   23   G ALA B  224  ARG B  230  1                                   7    
HELIX   24   H HIS B  237  GLN B  241  1                                   5    
HELIX   25   I ASP B  249  ASN B  257  1                                   9    
HELIX   26   J ALA B  259  MET B  273  1                                  15    
SHEET    1   A 2 GLN A 173  GLN A 175  0                                        
SHEET    2   A 2 LEU A 210  PRO A 212 -1  N  SER A 211   O  ALA A 174           
SHEET    1   B 2 GLN B 173  GLN B 175  0                                        
SHEET    2   B 2 LEU B 210  PRO B 212 -1  N  SER B 211   O  ALA B 174           


CONNECTIVITY ANNOTATION SECTION

SSBOND   1 CYS A   11    CYS A   91                                             
SSBOND   2 CYS A   44    CYS A   49                                             
SSBOND   3 CYS A   97    CYS A  290                                             
SSBOND   4 CYS A  176    CYS A  201                                             
SSBOND   5 CYS B   11    CYS B   91                                             
SSBOND   6 CYS B   44    CYS B   49                                             
SSBOND   7 CYS B   97    CYS B  290                                             
SSBOND   8 CYS B  176    CYS B  201                                             
LINK         C   PCA A   1                 N   LEU A   2                        
LINK        FE   HEM A 300                 NE2 HIS A 169                        
LINK        CA    CA A 301                 O   THR A 170                        
LINK        CA    CA A 301                 OG1 THR A 170                        
LINK        CA    CA A 301                 O   THR A 217                        
LINK        CA    CA A 301                 O   LYS A 220                        
LINK        CA    CA A 302                 O   ASP A  43                        
LINK        CA    CA A 302                 O   VAL A  46                        
LINK        CA    CA A 302                 O   GLY A  48                        
LINK         C   PCA B   1                 N   LEU B   2                        
LINK        FE   HEM B 300                 NE2 HIS B 169                        
LINK        CA    CA B 301                 O   THR B 170                        
LINK        CA    CA B 301                 O   THR B 217                        
LINK        CA    CA B 301                 OG1 THR B 217                        
LINK        CA    CA B 301                 O   LYS B 220                        
LINK        CA    CA B 302                 O   ASP B  43                        
LINK        CA    CA B 302                 O   VAL B  46                        
LINK        CA    CA B 302                 O   GLY B  48                        
LINK        CA    CA B 302                 OG  SER B  52                        
LINK         C1  NAG B 303                 ND2 ASN B 144                        


MISCELLANEOUS FEATURES SECTION


SITE     1 APC  5 THR A 170  ASP A 214  THR A 217  LYS A 220                    
SITE     2 APC  5 ASP A 222                                                     
SITE     1 ADC  6 ASP A  43  VAL A  46  GLY A  48  ASP A  50                    
SITE     2 ADC  6 SER A  52  GLU A  64                                          
SITE     1 ADH  4 HIS A  42  ARG A  38  PHE A  41  ASN A  70                    
SITE     1 APH  3 HIS A 169  PHE A 213  ASP A 239                               
SITE     1 BPC  5 THR B 170  ASP B 214  THR B 217  LYS B 220                    
SITE     2 BPC  5 ASP B 222                                                     
SITE     1 BDC  6 ASP B  43  VAL B  46  GLY B  48  ASP B  50                    
SITE     2 BDC  6 SER B  52  GLU B  64                                          
SITE     1 BDH  4 HIS B  42  ARG B  38  PHE B  41  ASN B  70                    
SITE     1 BPH  3 HIS B 169  PHE B 213  ASP B 239                               


CRYSTALLOGRAPHIC AND COORDINATE TRANSFORMATION SECTION


CRYST1   48.100   97.200  146.200  90.00  90.00  90.00 P 21 21 21    8          
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      0.020790  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010288  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006840        0.00000                         
MTRIX1   1  0.438990  0.642420 -0.628160       19.31394    1                    
MTRIX2   1  0.657570  0.246710  0.711850      -23.03639    1                    
MTRIX3   1  0.612280 -0.725560 -0.314130       48.73469    1                    

COORDINATE SECTION

HETATM    1  N   PCA A   1      21.053  53.031  41.428  1.00 64.66           N  
HETATM    2  CA  PCA A   1      21.281  54.416  41.795  1.00 64.66           C  
HETATM    3  C   PCA A   1      21.512  54.618  43.296  1.00 64.66           C  
HETATM    4  O   PCA A   1      21.449  55.742  43.797  1.00 97.31           O  
HETATM    5  CB  PCA A   1      19.978  55.081  41.329  1.00 97.31           C  
HETATM    6  CG  PCA A   1      18.952  53.983  41.455  1.00 97.31           C  
HETATM    7  CD  PCA A   1      19.776  52.710  41.396  1.00 97.31           C  
HETATM    8  OE  PCA A   1      19.322  51.556  41.252  1.00 97.31           O  
ATOM      9  N   LEU A   2      21.768  53.526  44.010  1.00 16.90           N  
ATOM     10  CA  LEU A   2      22.014  53.594  45.444  1.00 16.90           C  
ATOM     11  C   LEU A   2      23.393  54.216  45.651  1.00 16.90           C  
ATOM     12  O   LEU A   2      24.329  53.888  44.922  1.00  8.12           O  
ATOM     13  CB  LEU A   2      21.986  52.182  46.044  1.00  8.12           C  
ATOM     14  CG  LEU A   2      20.821  51.253  45.684  1.00  8.12           C  
ATOM     15  CD1 LEU A   2      20.926  49.982  46.501  1.00  8.12           C  
ATOM     16  CD2 LEU A   2      19.487  51.927  45.939  1.00  8.12           C  
ATOM     17  N   SER A   3      23.523  55.114  46.621  1.00  5.95           N  
ATOM     18  CA  SER A   3      24.804  55.760  46.897  1.00  5.95           C  
ATOM     19  C   SER A   3      25.108  55.755  48.394  1.00  5.95           C  
ATOM     20  O   SER A   3      24.192  55.755  49.224  1.00 18.79           O  
ATOM     21  CB  SER A   3      24.803  57.195  46.357  1.00 18.79           C  
ATOM     22  OG  SER A   3      23.704  57.943  46.853  1.00 18.79           O  
ATOM     23  N   SER A   4      26.394  55.771  48.738  1.00  6.04           N  
ATOM     24  CA  SER A   4      26.831  55.756  50.131  1.00  6.04           C  
ATOM     25  C   SER A   4      26.546  57.062  50.876  1.00  6.04           C  


CONNECTIVITY SECTION

CONECT    1    2    7                                                           
CONECT    1    2    7                                                           
CONECT    2    1    3    5                                                      
CONECT    2    1    3    5                                                      
CONECT    3    2    4    9                                                      
CONECT    7    1    6    8                                                      
CONECT    8    7                                                                
CONECT    8    7                                                                
CONECT    9    3   10                                                           
CONECT   86   85  677                                                           
CONECT  320  319 2234                                                           
CONECT  330  329  367                                                           
CONECT  345  344 2234                                                           

BOOKEEPING SECTION

MASTER      252    0    9   26    4    0   12    9 4579    2  174   46          
END