A process in which a protein is transported to, or maintained in, a location within a membrane raft. [ GOC:TermGenie GOC:dl http://purl.obolibrary.org/obo/go/references/0000087 http://www.ncbi.nlm.nih.gov/pubmed/19414744 ]
Synonyms: protein localization in membrane raft protein localisation to membrane raft protein localisation in membrane raft