Suppr超能文献

异常汉逊酵母黄素细胞色素b2(黄素脱氢酶和b2核心)的黄素和血红素结构域在大肠杆菌中的表达及重组蛋白的表征

Expression in Escherichia coli of the flavin and the haem domains of Hansenula anomala flavocytochrome b2 (flavodehydrogenase and b2 core) and characterization of the recombinant proteins.

作者信息

Silvestrini M C, Tegoni M, Célerier J, Desbois A, Gervais M

机构信息

Dipartimento di Scienze Biochimiche, Università di Roma La Sapienza, Italy.

出版信息

Biochem J. 1993 Oct 15;295 ( Pt 2)(Pt 2):501-8. doi: 10.1042/bj2950501.

Abstract

The flavin and haem domains of Hansenula anomala flavocytochrome b2 have been independently expressed in Escherichia coli. The flavin domain activity, studied only in the total cellular extract, owing to its instability, has characteristics very similar to those of the flavin domain obtained by proteolysis. The haem domain (r-core) has been purified to homogeneity and characterized in detail from spectroscopic and functional points of view. Spectral differences with respect to the domain produced by proteolysis (p-core) were found using resonance Raman and c.d. spectroscopy and have been interpreted in terms of changes in haem-protein interactions. However, this structural difference is functionally silent, since the r-core is able to reduce cytochrome c with the same efficiency as the proteolytic domain.

摘要

异常汉逊酵母黄素细胞色素b2的黄素结构域和血红素结构域已在大肠杆菌中独立表达。由于黄素结构域不稳定,仅在全细胞提取物中研究了其活性,其特性与通过蛋白水解获得的黄素结构域非常相似。血红素结构域(r-核心)已纯化至同质,并从光谱学和功能角度进行了详细表征。使用共振拉曼光谱和圆二色光谱发现了与蛋白水解产生的结构域(p-核心)相比的光谱差异,并根据血红素-蛋白质相互作用的变化进行了解释。然而,这种结构差异在功能上是沉默的,因为r-核心能够以与蛋白水解结构域相同的效率还原细胞色素c。

相似文献

5
Interaction between cytochrome b2 core and flavodehydrogenase from the yeast Hansenula anomala.
Photochem Photobiol. 1997 Jul;66(1):72-5. doi: 10.1111/j.1751-1097.1997.tb03140.x.

本文引用的文献

1
Spectrum of horse-heart cytochrome c.马心细胞色素c的光谱
Biochem J. 1959 Mar;71(3):570-2. doi: 10.1042/bj0710570.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验