http://linkedlifedata.com/r... | skos:definition | "The directed movement of an oligopeptide across a membrane by means of some agent such as a transporter or pore. Oligopeptides are molecules that contain a small number (2 to 20) of amino-acid residues connected by peptide linkages." [GOC:vw, ISBN:0198506732] | lld:geneontology |