Crystallographic Information Framework

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Index

Macromolecular dictionary (mmCIF) version 2.0.09

_struct_ref.seq_dif

Name:
'_struct_ref.seq_dif'

Definition:

   A flag to indicate the presence ('yes') or absence ('no') of
   point differences between the sequence of the entity or
   biological unit described in the data block and that in
   the referenced database entry. This data item may also
   take the value '.', indicating that the reference is not to a
   sequence.

Type: ucode

Mandatory item: no


The data value must be one of the following:


no 		there are no point differences

n 		abbreviation for "no"

yes 		there are point difference

y 		abbreviation for "yes"

. 		reference is not to a sequence

Category: struct_ref


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.