Identification of heterogeneous and microheterogeneous subunits of glutathione S-transferase in rat liver cytosol.

Identification of heterogeneous and microheterogeneous subunits of glutathione S-transferase in rat liver cytosol.
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大鼠肝细胞质中谷胱甘肽 S-转移酶异质和微异质亚基的鉴定。

DOI:
10.1016/0003-9861(85)90484-9
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发表时间:
1985
影响因子:
3.9
通讯作者:
Kiyomi Sato
Kiyomi Sato
中科院分区:
生物学3区
文献类型:
--
作者:
Kimihiko Satoh;A. Kitahara;Kiyomi Sato

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通过双向凝胶电泳(等电聚焦/十二烷基硫酸钠电泳),然后用考马斯亮蓝染料染色,分析了大鼠肝胞液中二聚谷胱甘肽S-转移酶的多种分子形式的亚基。Ya、Yb、Yb′、Yc和Yp这五个亚基(Mr分别为26,500、27,500、27,500、28,500和26,000)的七种分子形式,A2、AC、C2、B2、BL、L2和GST-P,通过与纯化分子形式的分子量和pI值进行比较以及通过免疫吸附分子形式鉴定,胞质溶胶以及那些在体外合成的针对七种形式的抗体。Yp是胎盘谷胱甘肽S-转移酶GST-P(YpYp)的亚基,其在致癌剂处理的大鼠肝脏中显著增加[A. Kitaharaet al. 44,2698-2703; K. Satohet al.等人(1985)Proc. Acad. Sci. USA82,3964-3968]。在Yb、Yb′和Yp亚基中可检测到微异质性,不同的形式,称为Yb 1、Yb 2、Yb′1、Yb′2和Yp 1、Yp 2,大小相似,但差异约为100%。0.3每个亚单位内的pI单位。在兔网织红细胞裂解物翻译系统中,从肝脏含poly(A)的RNA中体外扩增的多肽中也可检测到这些微异质形式,表明它们可从不同的mRNA中翻译。
Subunits of multiple molecular forms of dimeric glutathioneS-transferase in rat liver cytosol were analyzed by two-dimensional gel electrophoresis (isoelectric focusing/sodium dodecyl sulfate-electrophoresis) followed by staining with Coomassie blue dye. The five subunits, Ya, Yb, Yb′, Yc, and Yp (Mr's 26,500, 27,500, 27,500, 28,500, and 26,000, respectively) of seven molecular forms, A2, AC, C2, B2, BL, L2, and GST-P, were identified by comparison of molecular weights and pIvalues with those of purified molecular forms and by immunoadsorption of the molecular forms in the cytosol as well as those synthesizedin vitrousing antibodies against the seven forms. Yp is the subunit of placental glutathioneS-transferase, GST-P (YpYp), which is markedly increased in carcinogen-treated rat livers [A. Kitaharaet al.(1984)Cancer Res.44, 2698–2703; K. Satohet al.(1985)Proc. Natl. Acad. Sci. USA82, 3964–3968]. Microheterogeneity was detectable within Yb, Yb′, and Yp subunits, the different forms, termed Yb1, Yb2, Yb′1, Yb′2, and Yp1, Yp2, being similar in size but differing by approx. 0.3 pIunit within each subunit. These microheterogeneous forms were also detectable in the polypeptides translatedin vitroin a rabbit reticulocyte lysate translation system from liver poly(A)-containing RNAs, suggesting that they are translatable from distinct mRNAs.
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: Taylor,JM
含有聚腺苷酸的信使 RNA 体外翻译后,正常大鼠肝脏、再生大鼠肝脏和 Novikoff 腹水肝癌细胞的核仁抗原的表征。
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发表时间: 1983
期刊: Cancer research
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发表时间: 1982
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通讯作者: Reddy,CC
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DOI: 10.1016/0006-291x(84)90778-2
发表时间: 1984
影响因子: 3.1
作者:
Reddy,CC;Li,N;Tu,CP
通讯作者: Tu,CP
大鼠谷胱甘肽 S-转移酶的组织特异性表达。
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Tu,CP;Weiss,MJ;Li,NQ;Reddy,CC
通讯作者: Reddy,CC