Prolyl isomerases in gene transcription.
In: Biochimica et biophysica acta, Jg. 1850 (2015-10-01), Heft 10, S. 2017-34
academicJournal
Zugriff:
Background: Peptidyl-prolyl isomerases (PPIases) are enzymes that assist in the folding of newly-synthesized proteins and regulate the stability, localization, and activity of mature proteins. They do so by catalyzing reversible (cis-trans) rotation about the peptide bond that precedes proline, inducing conformational changes in target proteins.
Scope of Review: This review will discuss how PPIases regulate gene transcription by controlling the activity of (1) DNA-binding transcription regulatory proteins, (2) RNA polymerase II, and (3) chromatin and histone modifying enzymes.
Major Conclusions: Members of each family of PPIase (cyclophilins, FKBPs, and parvulins) regulate gene transcription at multiple levels. In all but a few cases, the exact mechanisms remain elusive. Structure studies, development of specific inhibitors, and new methodologies for studying cis/trans isomerization in vivo represent some of the challenges in this new frontier that merges two important fields.
General Significance: Prolyl isomerases have been found to play key regulatory roles in all phases of the transcription process. Moreover, PPIases control upstream signaling pathways that regulate gene-specific transcription during development, hormone response and environmental stress. Although transcription is often rate-limiting in the production of enzymes and structural proteins, post-transcriptional modifications are also critical, and PPIases play key roles here as well (see other reviews in this issue). This article is part of a Special Issue entitled Proline-directed Foldases: Cell Signaling Catalysts and Drug Targets.
(Copyright © 2014. Published by Elsevier B.V.)
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Prolyl isomerases in gene transcription.
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Autor/in / Beteiligte Person: | Hanes, SD |
Zeitschrift: | Biochimica et biophysica acta, Jg. 1850 (2015-10-01), Heft 10, S. 2017-34 |
Veröffentlichung: | Amsterdam : Elsevier Pub. Co., 2015 |
Medientyp: | academicJournal |
ISSN: | 0006-3002 (print) |
DOI: | 10.1016/j.bbagen.2014.10.028 |
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