Defined in file seqloc.asn
C++ class: CPDB_seq_id
PDB-seq-id ::= SEQUENCE { --
mol PDB-mol-id , -- the molecule name
chain INTEGER DEFAULT 32 , -- Deprecated: 'chain' can't support multiple character
-- PDB chain identifiers (introduced in 2015).
-- 'chain-id' stores chain identifiers of any length.
rel Date OPTIONAL , -- release date, month and year
chain-id VisibleString OPTIONAL } -- chain identifier; length-independent generalization of 'chain'