Miscellaneous Features Section

The miscellaneous features section may describe properties in the molecule such as environments surrounding a non-standard residue or the assembly of an active site. Other features may be described in the remarks section but are not given a specific record type so far.


SITE

Overview

Record Format

COLUMNS        DATA  TYPE    FIELD         DEFINITION
---------------------------------------------------------------------------------
 1 -  6        Record name   "SITE  "
 8 - 10        Integer       seqNum        Sequence number.
12 - 14        LString(3)    siteID        Site name.
16 - 17        Integer       numRes        Number of residues that compose the site.
19 - 21        Residue name  resName1      Residue name for first residue that 
                                           creates the site.
23             Character     chainID1      Chain identifier for first residue of site.
24 - 27        Integer       seq1          Residue sequence number for first residue
                                           of the  site.
28             AChar         iCode1        Insertion code for first residue of the site.
30 - 32        Residue name  resName2      Residue name for second residue that 
                                           creates the site.
34             Character     chainID2      Chain identifier for second residue of
                                           the  site.
35 - 38        Integer       seq2          Residue sequence number for second
                                           residue of the site.
39             AChar         iCode2        Insertion code for second residue
                                           of the  site.
41 - 43        Residue name  resName3      Residue name for third residue that 
                                           creates  the site.
45             Character     chainID3      Chain identifier for third residue
                                           of the site.
46 - 49        Integer       seq3          Residue sequence number for third
                                           residue of the site.
50             AChar         iCode3        Insertion code for third residue
                                           of the site.
52 - 54        Residue name  resName4      Residue name for fourth residue that 
                                           creates  the site.
56             Character     chainID4      Chain identifier for fourth residue
                                           of the site.
57 - 60        Integer       seq4          Residue sequence number for fourth
                                           residue of the site.
61             AChar         iCode4        Insertion code for fourth residue
                                           of the site.

Details

Verification/Validation/Value Authority Control

Every SITE must have a corresponding description in remark 800. The numbering of sequential SITE records and format of each one is verified, as well as the existence of each residue in the ATOM records.

Relationships to Other Record Types

Each listed SITE needs a corresponding REMARK 800 that details its significance.

Example

         1         2         3         4         5         6         7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
SITE     1 AC1  3 HIS A  94  HIS A  96  HIS A 119                               
SITE     1 AC2  5 ASN A  62  GLY A  63  HIS A  64  HOH A 328                    
SITE     2 AC2  5 HOH A 634                                                     
SITE     1 AC3  5 GLN A 136  GLN A 137  PRO A 138  GLU A 205                    
SITE     2 AC3  5 CYS A 206                                                     
SITE     1 AC4 11 HIS A  64  HIS A  94  HIS A  96  HIS A 119                    
SITE     2 AC4 11 LEU A 198  THR A 199  THR A 200  TRP A 209                    
SITE     3 AC4 11 HOH A 572  HOH A 582  HOH A 635           


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