Prima1 Proline-rich membrane anchor 1 MLLRDLVLRHGCCWPSLLLHCALHPLWGLVQVTHAEPQKSCSKVTDSCQHICQCRPPPPLPPPPPPPPPPRLLSAPAPNSTSCPAEDSWWSGLVIIVAVVCASLVFLTVLVIICYKAIKRKPLRKDENGASVAEYPMSSSPSNKGVDVNAAVV Required to anchor acetylcholinesterase (ACHE) to the basal lamina of the neuromuscular junction and to the membrane of neuronal synapses in brain. Organizes ACHE into tetramers (By similarity). PRIMA_RAT 153