An accession number is a unique identifier assigned to something, like a book or an artifact, that helps track and locate it within a collection or database. It's like a code used to find and reference specific items easily. Full definition
The structure has been deposited in the Protein Data Bank with accession number 5HRZ. (newscenter.lbl.gov)
Possible resuscitation - promoting factor RpfA of M. tuberculosis Genebank accession number: AFN48747.1 (nibsc.org)
Reads are mapped to the previously sequenced XMRV genome corresponding to each of the samples, with the exception of reads from LNCaP, which are mapped to the 22Rv1 - associated genome (Genbank accession number FN692043). (journals.plos.org)