Cloning and functional expression of cholecystokinin/gastrin receptor-encoding DNA

摘要

An unconventional approach to purifying CCK receptor protein to sequenceable-grade homogeneity has been discovered. By this approach, CCK receptor protein can be obtained and sequenced routinely from a variety sources, and from the sequence information thus obtained it is possible to prepare oligonucleotides suitable for cloning CCK receptor genes. "CCK receptor" in this context denotes, any from a group of proteins that displays a characteristic CCK binding affinity and that is encoded by a nucleotide sequence which hybridizes a oligonucleotide probe designed in accordance with the criteria elaborated herein.