Matrix protein. Nucleocapsid protein p14: Nucleocapsid protein. Binds to single-stranded DNA. Capsid protein. Late-budding domains (L domains) are short sequence motifs essential for viral particle budding. They recruit proteins of the host ESCRT machinery (Endosomal Sorting Complex Required for Transport) or ESCRT-associated proteins. Gag-p27 contains one L domain: a PTAP/PSAP motif, which interacts with the UEV domain of TSG101 (Potential). p10 is myristoylated.