Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/55280
Type: Artigo de periódico
Title: Bacterial Secretion Chaperones
Author: Fattori, J
Prando, A
Martins, AM
Rodrigues, FHD
Tasic, L
Abstract: Many Gram-negative bacteria are able to invade hosts by translocation of effectors directly into target cells in processes usually mediated by two very complex secretion systems (SSs), named type III (T3) and type IV (T4) SSs. These syringe-needle injection devices work with intervention of specialized secretion chaperones that, unlike traditional molecular chaperones, do not assist in protein folding and are not energized by ATP. Controversy still surrounds secretion chaperones primary role, but we can say that these chaperones act as: (i) bodyguards to prevent premature aggregation, or as (ii) pilots to direct substrate secretion through the correct secretion system. This family of chaperones does not share primary structure similarity but amazingly equal 3D folds. This mini review has the intent to present updated structural and functional data for several important secretion chaperones, either alone or in complex with their cognate substrates, as well to report on the common features and roles of T3, T4 and flagellar chaperones.
Subject: Secretion chaperones
protein and DNA transport
protein-protein interactions
spectrometry and spectroscopy
Country: Emirados Árabes Unidos
Editor: Bentham Science Publ Ltd
Rights: fechado
Identifier DOI: 10.2174/092986611794475048
Date Issue: 2011
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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