Endorphin has been isolated from an acid acetone extract of the pituitary of the salmon Oncorhynchus keta by ion exchange chromatography and gel filtration. Sequence analysis revealed it to be a nonacosapeptide with following primary structure: Ac-Tyr-Gly-Gly-Phe-Met-Lys-Pro-Tyr-Thr-Lys-Gln-Ser-His-Lys-Pro-Leu-Ile-Thr-Leu-Leu-Lys-His- Ile-Thr-Leu-Lys-Asn-Glu-Gln-OH. It appears that the amino terminal segment which is necessary for analgesic activity is conserved through the evolution of vertebrate except for the blocking of the amino terminal of salmon endorphin.
|Number of pages||6|
|Journal||Biochemical and biophysical research communications|
|Publication status||Published - 1979 Jun 27|
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology