SCHMIDT, M and RUTKAT, K and RACHEL, R and PFEIFER, G and JAENICKE, R and VIITANEN, P and LORIMER, G and BUCHNER, J (1994) SYMMETRICAL COMPLEXES OF GROE CHAPERONINS AS PART OF THE FUNCTIONAL CYCLE. SCIENCE, 265 (5172). pp. 656-659. ISSN 0036-8075,
Full text not available from this repository.Abstract
The particular structural arrangement of chaperonins probably contributes to their ability to assist in the folding of proteins. The interaction of the oligomeric bacterial chaperonin GroEL and its cochaperonin, GroES, in the presence of adenosine diphosphate (ADP) forms an asymmetric complex. However, in the presence of adenosine triphosphate (ATP) or its nonhydrolyzable analogs, symmetric complexes were found by electron microscopy and image analysis. The existence of symmetric chaperonin complexes is not predicted by current models of the functional cycle for GroE-mediated protein folding. Because complete folding of a nonnative substrate protein in the presence of GroEL and GroES only occurs in the presence of ATP, but not with ADP, the symmetric chaperonin complexes formed during the GroE cycle are proposed to be functionally significant.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ESCHERICHIA-COLI; ELECTRON-MICROSCOPY; ATP HYDROLYSIS; CENTRAL CAVITY; PROTEIN; COOPERATIVITY; PURIFICATION; INTERACTS; SURFACE; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53190 |
Actions (login required)
 |
View Item |
