期刊论文详细信息
FEBS Letters
On the localization of FKBP25 in T‐lymphocytes
Rivière, Sylvie1  Ménez, André1  Galat, Andrzej1 
[1] Département d'Ingénierie et d'Etudes des Protéines (DIEP), Centre d'Etudes de Saclay, Bat. 152, F-91191 Gif-sur-Yvette Cedex, France
关键词: PPIase;    FKBP25;    FKBP12;    DNA binding;   
DOI  :  10.1016/0014-5793(93)81173-W
学科分类:生物化学/生物物理
来源: John Wiley & Sons Ltd.
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【 摘 要 】

Using polyclonal rabbit antibodies against bovine FKBP25, NEPHGE/SDS-PAGE and Western blotting we demonstrate that the rapamycin-specific immunophilin FKBP25 is present in T-lymphoma Jurkat cells. Subsequent fractionations of the soluble Jurkat cell proteins have revealed that FKBP25 predominantly occurs in the nuclear fraction. FKBP25 has the ability to bind to DNA. The FKBP25/DNA complex can be dissociated in the presence of a high salt concentration. FKBP12, which shares high amino acid sequence homology to the C-tenninal domain of FKBP25, has no tendency to bind to DNA. CD-constrained predictions of the secondary structures in FKBP25 suggest that an amphipathic helix-loop-helix occurs in the N-terminal part of the protein and may account for its binding to DNA.

【 授权许可】

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