Abstract:
:The characterization of a 20 kilodalton (20 kD) variant of rat growth hormone is reported. The 20 kD variant from rat pituitary gland extracts was identified on Western immunoblots of polyacrylamide gels. It was also shown that pituitary tissue maintained in culture secretes the 20 kD form. A rat growth hormone cDNA fragment was used as a probe in S1 nuclease mapping experiments of rat pituitary poly (A) mRNA to detect the presence of two growth hormone mRNAs in the rat pituitary gland. The protected mRNAs correspond to the predicted sizes that would encode the 22 kD and 20 kD forms of growth hormone. The site of variation between the mRNAs maps to a potential alternative 3' splice site in the 5' end of exon 3 of the coding sequence. The results support the hypothesis that the 20 kD variant in rat is the product of an mRNA alternatively spliced in exon 3, as is the case for the human growth hormone.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Howland DS,Farrington MA,Taylor WD,Hymer WCdoi
10.1016/0006-291x(87)90980-6subject
Has Abstractpub_date
1987-09-15 00:00:00pages
650-7issue
2eissn
0006-291Xissn
1090-2104pii
0006-291X(87)90980-6journal_volume
147pub_type
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