Age‐dependent deamidation of chicken αA‐crystallin

Age‐dependent deamidation of chicken αA‐crystallin
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鸡 αA-晶状体蛋白的年龄依赖性脱酰胺作用

DOI:
10.1016/0014-5793(87)80935-3
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发表时间:
1987
期刊:
影响因子:
3.5
通讯作者:
W. D. de Jong
W. D. de Jong
中科院分区:
生物学3区
文献类型:
--
作者:
C. Voorter;E. Roersma;H. Bloemendal;W. D. de Jong

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来自鸡眼晶状体的αA-晶状体蛋白的主要翻译后修饰产物比相应的初级基因产物多一个负电荷。这些多肽在胰蛋白酶消化和溴化氰裂解后通过肽图谱进行比较,电荷差异可以定位于包含αA-晶状体蛋白氨基酸序列的残基146-150的肽。随后用氨肽酶进行的酶水解显示,初级基因产物的149位的天冬酰胺被天冬氨酸取代。不同年龄鸡的总透镜匀浆的二维凝胶电泳显示脱酰胺αA亚基呈年龄依赖性增加。
The major posttranslational modification product of αA‐crystallin from chicken eye lenses has one more negative charge than the corresponding primary gene product. These polypeptides were compared by peptide mapping after tryptic digestion and cyanogen bromide cleavage, and the charge difference could be located in a peptide, comprising residues 146–150 of the amino acid sequence of αA‐crystallin. Subsequent enzymatic hydrolysis with aminopeptidase showed that asparagine at position 149 of the primary gene product is replaced by aspartic acid. Two‐dimensional gel electrophoresis of total lens homogenates from chickens of different ages revealed an age‐dependent increase of the deamidated αA‐subunit.
蛋白质羧基甲基转移酶对猪促肾上腺皮质激素的化学计量甲基化需要天冬酰胺的脱酰胺作用 25。非典型 L-异天冬氨酰残基的 α-羧基甲基化的证据。
DOI: --
发表时间: 1984
期刊: The Journal of biological chemistry
影响因子: --
作者:
Aswad,DW
通讯作者: Aswad,DW
DOI: 10.1016/s0021-9258(19)75855-4
发表时间: 1987-01
期刊: The Journal of biological chemistry
影响因子: --
作者:
T. Geiger;S. Clarke
通讯作者: T. Geiger;S. Clarke