Polypeptides, their production and use
View Patent ↗This invention relates to a novel polypeptide involving in the modulation of central nervous system function, circulatory function, immune function, gastrointestinal function, metabolic function, reproductive function, etc., it can be used as a drug for treating or preventing a variety of diseases, e.g. HIV infection or AIDS (acquired immune deficiency syndrome) or the like.
1. An isolated DNA comprising a nucleotide sequence coding for a ligand polypeptide capable of binding to a receptor protein, wherein the receptor protein comprises the amino acid sequence of SEQ ID NO: 3, and wherein the ligand polypeptide comprises the amino acid sequence of SEQ ID NO: 40.
2. A recombinant vector which comprises the DNA as claimed in claim 1 .
3. A transformant carrying the DNA as claimed in claim 1 or the recombinant vector as claimed in claim 2 .
4. A method for producing a polypeptide, a precursor polypeptide thereof or a salt thereof which comprises cultivating the transformant as claimed in claim 3 .