For a polymer entity, the sequence number in the second of
the two entities containing the linkage.
This data item is a pointer to _entity_poly_seq.num in the
ENTITY_POLY_SEQ category.
This HTML dictionary was created using the CIFLIB C Language Application Program Interface
at the
Resource Collaboratory for Structural Bioinformatics
Rutgers University, Department of Chemistry
New Brunswick, New Jersey help@rcsb.rutgers.edu