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:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
通讯作者:
GUILLEMIN, R
GUILLEMIN, R
中科院分区:
其他
文献类型:
--
作者:
LING, N;ESCH, F;GUILLEMIN, R

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促垂体肽,即生长激素释放因子(GRF),通过酸提取、免疫亲和层析、凝胶过滤以及两步反相高效液相色谱法从人下丘脑 - 垂体组织中分离出来。使用气相测序仪以及对天然肽及其合成复制品进行反相液相色谱分析来确定氨基酸序列,结果显示其一级结构如下:H - 酪氨酸 - 丙氨酸 - 天冬氨酸 - 丙氨酸 - 异亮氨酸 - 苯丙氨酸 - 苏氨酸 - 天冬酰胺 - 丝氨酸 - 酪氨酸 - 精氨酸 - 赖氨酸 - 缬氨酸 - 亮氨酸 - 甘氨酸 - 谷氨酰胺 - 亮氨酸 - 丝氨酸 - 丙氨酸 - 精氨酸 - 赖氨酸 - 亮氨酸 - 亮氨酸 - 谷氨酰胺 - 天冬氨酸 - 异亮氨酸 - 甲硫氨酸 - 丝氨酸 - 精氨酸 - 谷氨酰胺 - 谷氨酰胺 - 甘氨酸 - 谷氨酸 - 丝氨酸 - 天冬酰胺 - 谷氨酰胺 - 谷氨酸 - 精氨酸 - 甘氨酸 - 丙氨酸 - 精氨酸 - 丙氨酸 - 精氨酸 - 亮氨酸 - NH₂,这与最近从导致肢端肥大症的人胰腺肿瘤中分离并鉴定的GRF相同。当将人下丘脑GRF的一级结构与猪、牛、山羊和绵羊的下丘脑GRF进行比较时,显示出主要的同源性(分别为93%、89%和86%)。
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.