ISOLATION, PRIMARY STRUCTURE, AND SYNTHESIS OF HUMAN HYPOTHALAMIC SOMATOCRININ - GROWTH HORMONE-RELEASING FACTOR
ISOLATION, PRIMARY STRUCTURE, AND SYNTHESIS OF HUMAN HYPOTHALAMIC SOMATOCRININ - GROWTH HORMONE-RELEASING FACTOR
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DOI:
10.1073/pnas.81.14.4302
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发表时间:
1984-01-01
期刊:
影响因子:
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通讯作者:
GUILLEMIN, R
中科院分区:
文献类型:
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作者:
LING, N;ESCH, F;GUILLEMIN, R
The hypophysiotropic peptide, growth hormone-releasing factor (GRF), was isolated from human hypothalamic-hypophyseal tissues by means of acid extraction, immunoaffinity chromatography, gel filtration and 2 steps of reverse-phase high-performance liquid chromatography. Amino acid sequence determination using a gas-phase sequencer and reverse-phase liquid chromatography of the native peptide and its synthetic replicate showed its primary structure to be as follows: H-Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg-Gln-Gln-Gly-Glu-Ser-Asn-Gln-Glu-Arg-Gly-Ala-Arg-Ala-Arg-Leu-NH2, which is identical to that of the GRF recently isolated and characterized from a human pancreatic tumor that had caused acromegaly. Human hypothalamic GRF shows major homologies (93%, 89% and 86%, respectively) when its primary structure is compared to that of the hypothalamic GRF from the porcine, bovine, caprine and ovine species.