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谷氨酸或天冬氨酸在体外及分离的肝细胞中对氨基氧乙酸抑制的天冬氨酸转氨酶的再激活作用。

Re-activation by glutamate or aspartate of amino-oxyacetate-inhibited aspartate aminotransferase in vitro and in isolated hepatocytes.

作者信息

Cornell N W, Crow K E, Whitefoot R P

出版信息

Biochem J. 1981 Jul 15;198(1):219-23. doi: 10.1042/bj1980219.

DOI:10.1042/bj1980219
PMID:7325996
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1163230/
Abstract

Experiments with isolated rat hepatocytes and with cell extracts indicate, in contrast with previous reports, that pyruvate does not block or reverse the inhibition of aspartate aminotransferase (EC 2.6.1.1) by amino-oxyacetate. That inhibition, however, is partially overcome by glutamate or aspartate either in cell extracts or in whole cells incubated with substrate combinations that cause accumulation of those amino acids.

摘要

与之前的报道相反,对分离的大鼠肝细胞和细胞提取物进行的实验表明,丙酮酸不会阻止或逆转氨基氧乙酸对天冬氨酸转氨酶(EC 2.6.1.1)的抑制作用。然而,无论是在细胞提取物中,还是在用导致这些氨基酸积累的底物组合孵育的完整细胞中,谷氨酸或天冬氨酸都能部分克服这种抑制作用。

相似文献

1
Re-activation by glutamate or aspartate of amino-oxyacetate-inhibited aspartate aminotransferase in vitro and in isolated hepatocytes.谷氨酸或天冬氨酸在体外及分离的肝细胞中对氨基氧乙酸抑制的天冬氨酸转氨酶的再激活作用。
Biochem J. 1981 Jul 15;198(1):219-23. doi: 10.1042/bj1980219.
2
Selective inhibition of alanine aminotransferase and aspartate aminotransferase in rat hepatocytes.大鼠肝细胞中丙氨酸氨基转移酶和天冬氨酸氨基转移酶的选择性抑制
Biochem J. 1984 Jun 15;220(3):707-16. doi: 10.1042/bj2200707.
3
Re-evaluation of amino-oxyacetate as an inhibitor.对氨基氧乙酸作为一种抑制剂的重新评估。
Biochem J. 1977 Feb 15;162(2):453-5. doi: 10.1042/bj1620453.
4
Hyperammonemic alterations in the metabolism of glutamate and aspartate in rat cerebellar astrocytes.大鼠小脑星形胶质细胞中谷氨酸和天冬氨酸代谢的高氨血症改变
Neurosci Lett. 1992 Apr 13;138(1):107-10. doi: 10.1016/0304-3940(92)90483-n.
5
Effects of inhibition of ornithine aminotransferase or of general aminotransferases on urea and citrulline synthesis and on the levels of acetylglutamate in isolated rat hepatocytes.抑制鸟氨酸转氨酶或一般转氨酶对离体大鼠肝细胞中尿素和瓜氨酸合成以及乙酰谷氨酸水平的影响。
Mol Cell Biochem. 1988 Feb;79(2):107-12. doi: 10.1007/BF02424551.
6
Rate-limiting steps for protein synthesis in isolated rat liver cells. Role of aspartate availability.大鼠离体肝细胞中蛋白质合成的限速步骤。天冬氨酸可用性的作用。
Biochem J. 1987 Mar 1;242(2):485-92. doi: 10.1042/bj2420485.
7
Nitrogen-13 flux from L-[13N]glutamate in the isolated rabbit heart: effect of substrates and transaminase inhibition.离体兔心脏中L-[¹³N]谷氨酸的氮-13通量:底物和转氨酶抑制的影响。
Biochim Biophys Acta. 1986 Dec 10;884(3):531-44. doi: 10.1016/0304-4165(86)90205-9.
8
Inhibition by cycloserine of mitochondrial and cytosolic aspartate aminotransferase in isolated rat hepatocytes.环丝氨酸对分离的大鼠肝细胞中线粒体和胞质天冬氨酸氨基转移酶的抑制作用。
Biochem J. 1981 Mar 15;194(3):1027-30. doi: 10.1042/bj1941027.
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Use of beta-methylene-D,L-aspartate to assess the role of aspartate aminotransferase in cerebral oxidative metabolism.使用β-亚甲基-D,L-天冬氨酸评估天冬氨酸转氨酶在脑氧化代谢中的作用。
J Neurochem. 1983 Nov;41(5):1370-83. doi: 10.1111/j.1471-4159.1983.tb00835.x.
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Modulation of amino acid and 2-oxo acid pools in Trichomonas vaginalis by aspartate aminotransferase inhibitors.天冬氨酸转氨酶抑制剂对阴道毛滴虫中氨基酸和2-氧代酸库的调节作用。
Mol Biochem Parasitol. 1986 Oct;21(1):17-24. doi: 10.1016/0166-6851(86)90074-5.

引用本文的文献

1
Aspartate aminotransferases ofPanicum miliaceum L. andPanicum antidotale retz. : Inactivation and reconstitution.黑麦和狗尾草天冬氨酸转氨酶:失活与复性。
Planta. 1982 Sep;154(5):477-84. doi: 10.1007/BF01267817.
2
Selective inhibition of alanine aminotransferase and aspartate aminotransferase in rat hepatocytes.大鼠肝细胞中丙氨酸氨基转移酶和天冬氨酸氨基转移酶的选择性抑制
Biochem J. 1984 Jun 15;220(3):707-16. doi: 10.1042/bj2200707.
3
Rate-limiting steps for protein synthesis in isolated rat liver cells. Role of aspartate availability.大鼠离体肝细胞中蛋白质合成的限速步骤。天冬氨酸可用性的作用。
Biochem J. 1987 Mar 1;242(2):485-92. doi: 10.1042/bj2420485.

本文引用的文献

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Acceleration of gluconeogenesis from lactate by lysine (Short Communication).赖氨酸促进乳酸的糖异生(简短通讯)。
Biochem J. 1973 Jun;134(2):671-2. doi: 10.1042/bj1340671.
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Tissue sulfhydryl groups.组织巯基
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Inhibition of hepatic gluconeogenesis by ethanol.乙醇对肝脏糖异生的抑制作用。
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A new assay for glutamate-oxaloacetate transaminase.一种用于检测谷氨酸草酰乙酸转氨酶的新检测方法。
Anal Biochem. 1970 Jun;35(2):405-10. doi: 10.1016/0003-2697(70)90202-2.
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A rapid enzymatic method for estimating ethanol in body fluids.一种用于估算体液中乙醇含量的快速酶法。
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9
Gluconeogenesis in the kidney cortex. Effects of D-malate and amino-oxyacetate.肾皮质中的糖异生作用。D-苹果酸和氨基氧乙酸的影响。
Biochem J. 1970 Feb;116(3):483-91. doi: 10.1042/bj1160483.
10
Paths of carbon in gluconeogenesis and lipogenesis: the role of mitochondria in supplying precursors of phosphoenolpyruvate.糖异生和脂肪生成过程中的碳代谢途径:线粒体在提供磷酸烯醇式丙酮酸前体中的作用。
Proc Natl Acad Sci U S A. 1965 Jun;53(6):1410-5. doi: 10.1073/pnas.53.6.1410.