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| Content Provider | PubMed Central |
|---|---|
| Author | Baird, A. Ling, N. Böhlen, P. Benoit, R. Klepper, R. Guillemin, R. |
| Abstract | A highly specific radioimmunoassay for one of the putative adrenomedullary [Met]enkephalin precursors, BAM-12P (Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu-OH), has been developed. The BAM-12P antibodies recognize the COOH-terminal fragment of the peptide from Arg7 to Glu12 and do not crossreact with [Met5]- or [Leu5]enkephalin or any of their COOH-terminal lysine or arginine extended analogs. Specificity for the COOH-terminal Glu-OH is suggested by the 100% crossreactivity with BAM-12P5-12 and 0.3% crossreactivity with BAM-12P5-12 amide. Using these antibodies, we have measured three forms of BAM-12P-like immunoreactivity in extracts of bovine adrenal medulla, of which the major form (greater than 90%) corresponds to BAM-12P by molecular weight. Extracts of bovine adrenal cortex contain 1% the amount of a BAM-12P-like material (Mr approximately 1400; 20 ng per gland), possibly due to crosscontamination with adrenomedullary tissue. The major form of BAM-12P-like material in extracts of bovine neurointermediate pituitaries is of higher molecular weight than authentic BAM-12P (Mr approximately 4000); the remaining material (10%) corresponds to BAM-12P by molecular weight. There is no detectable BAM-12P-like immunoreactivity in crude or purified extracts of bovine anterior pituitaries. Extracts of bovine hypothalamic tissues contain small amounts of BAM-12P immunoreactivity (approximately 2 ng per fragment) which can be detected as one molecular form corresponding to a 1400-dalton molecule. The results indicate that the enkephalin precursor found in the adrenal medulla also may be present in the pituitary and hypothalamus. Furthermore, the processing of this molecule appears to be tissue-specific. |
| Starting Page | 2023 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 79 |
| Language | English |
| Publisher Date | 1982-03-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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