Accession Protein accession Protein ID (EMBL/GenBank/DDBJ) beta13 EMBL/GENBANK/DDBJ coding feature protein identifier, issued by International collaborators. This qualifier consists of a stable ID portion (3+5 format with 3 position letters and 5 numbers) plus a version number after the decimal point. When the protein sequence encoded by the CDS changes, only the version number of the /protein_id value is incremented; the stable part of the /protein_id remains unchanged and as a result will permanently be associated with a given protein; this qualifier is valid only on CDS features which translate into a valid protein.