Tags: Protein.
A late protein is a viral protein that is formed after replication of the virus. One example is VP4 from simian virus 40 (SV40).In Human papillomavirus two late proteins are involved in capsid formation: a major (L1) and a minor (L2) protein in the approximate proportion 95:5%. L1 forms a pentameric assembly unit of the viral shell in a manner that closely resembles VP1 from polyomaviruses. Intermolecular disulphide bonding holds the L1 capsid proteins together.