Please use this identifier to cite or link to this item:
Title: Sugar transport systems in Kluyveromyces marxianus CCT 7735.
Authors: Silveira, Fernando Augusto da
Diniz, Raphael Hermano Santos
Sampaio, Geraldo Magela Santos
Brandão, Rogélio Lopes
Silveira, Wendel Batista da
Castro, Ieso de Miranda
Keywords: Glucose
K marxianus
Metabolism regulation
Issue Date: 2019
Citation: SILVEIRA, F. A. da et al. Sugar transport systems in Kluyveromyces marxianus CCT 7735. Antonie van Leeuwenhoek, v. 112, n. 2, p. 211–223, fev. 2019. Disponível em: <>. Acesso em: 25 fev. 2019.
Abstract: The pattern of glucose repression in most Kluyveromyces marxianus strains does not correlate with fermentative behaviour; however, glucose repression and fermentative metabolism appear to be linked to the kinetics of sugar uptake. In this work, we show that lactose transport in K. marxianus CCT 7735 by lactose-grown cells is mediated by a low-affinity H+-sugar symporter. This system is glucose repressed and able to transport galactose with low affinity. We also observed the activity of a distinct lactose transporter in response to raffinose. Regarding glucose uptake, specificities of at least three low-affinity systems rely on the carbon source available in a given growth medium. Interestingly, it was observed only one high-affinity system is able to transport both glucose and galactose. We also showed that K. marxianus CCT 7735 regulates the expression of sugar transport systems in response to glucose availability.
ISSN: 1572-9699
Appears in Collections:DEFAR - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_SugarTransportSystems.pdf997,15 kBAdobe PDFView/Open    Request a copy

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.