Amino terminal amino acid sequence of the major polypeptide subunit of Torpedo californica acetylcholine receptor

The amino terminal sequence of the 40,000 dalton polypeptide subunit of $\text{Torpedo}\text{californica}$ acetylcholine receptor has been determined for twenty-five cycles using automatic microsequencing procedures. The results demonstrate a unique polypeptide sequence for this receptor subunit and quantitation of amino acid recoveries shows that no significant amounts of polypeptides with blocked amino terminii are present.