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Folding of homologous proteinsm : The refolding of different ribonucleases is independent of sequence variations, proline content and glycosylation

Title data

Krebs, Herbert ; Schmid, Franz X. ; Jaenicke, Rainer:
Folding of homologous proteinsm : The refolding of different ribonucleases is independent of sequence variations, proline content and glycosylation.
In: Journal of Molecular Biology. Vol. 169 (15 September 1983) Issue 2 . - pp. 619-635.
ISSN 0022-2836
DOI: https://doi.org/10.1016/S0022-2836(83)80067-9

Official URL: Volltext

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Abstract in another language

The refolding kinetics of four different pancreatic ribonucleases have been compared. Bovine and ovine RNAase contain 4 proline residues, red deer RNAase has 5 prolines, the enzyme from roe deer 6 prolines. Despite the variation in the amount of prolines, all four proteins show a constant value of 20% fast refolding species UF. The extra proline residues of the deer enzymes do not increase the amount of slow refolding species US. Consequently these residues may be non-essential for folding. Despite many differences in the amino acid sequence, the rates if the fast and slow refolding reactions are very similar for all investigated ribonucleases. This indicates that the pathway of refolding has been conserved during evolution, i.e. the positions where amino acid substitutions occur are not critically important for the rate-determining steps of the folding process. A carbohydrate chain attached to ribonuclease does not alter the folding properties of the protein: RNAase A and RNAase B from roe deer show identical refolding kinetics.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: PubMed-ID: 6620387
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Professorship Biochemistry - Univ.-Prof. Dr. Franz Xaver Schmid
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professorship Biochemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 29 Apr 2015 11:52
Last Modified: 10 Sep 2015 12:55
URI: https://eref.uni-bayreuth.de/id/eprint/11209