Crystallographic Information Framework

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Index

Macromolecular dictionary (mmCIF) version 2.0.09

Category ENTITY_KEYWORDS

Name:
'entity_keywords'

Description:

   Data items in the ENTITY_KEYWORDS category specify keywords
   relevant to the molecular entities. Note that this list of
   keywords is separate from the list that is used for the
   STRUCT_BIOL data items and is intended to provide only the
   information that one would know about the molecular entity *if
   one did not know its structure*. Hence polypeptides are simply
   polypeptides, not cytokines or beta-alpha-barrels, and
   polyribonucleic acids are simply poly-RNA, not transfer-
   RNA.

Example:

Example 1 - based on PDB entry 5HVP and laboratory records for the structure corresponding to PDB entry 5HVP. 
 
    loop_
    _entity_keywords.entity_id
    _entity_keywords.text
      1  'polypeptide'
      2  'natural product, inhibitor, reduced peptide'


Category groups:
    inclusive_group
    entity_group
Category keys:
    _entity_keywords.entity_id
    _entity_keywords.text

Mandatory category: no


International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

First online edition (2006)

Edited by S. R. Hall and B. McMahon

An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.