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'