PDBx/mmCIF
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Data Item _entity_poly.ndb_chain_id

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General

Item name
_entity_poly.ndb_chain_id
Category name
entity_poly
Attribute name
ndb_chain_id
Required in PDB entries
Used in currrent PDB entries
No

Item Description

The chain_id(s) corresponding to this polymer entity.

Additional Descriptive Information for Depositors 

 
The chain_id(s) in your PDB format coordinate file which correspond to this 
polymer entity.


A single entity may have multiple chain_ids if there are multiple molecules 
of the same sequence in the deposited coordinate set. Separate multiple chain_ids 
by commas.

Additional Item Example for Depositors

View/hide Example 
 
For a single polymer in the deposited coordinates, the chain identifier is A.
For a homodimerin the deposited coordinate set, the chain identifiers are A and B.

Data Type

Data type code
line
Data type detail
char item types / multi-word items ...
Primitive data type code
char
Regular expression
[][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*