期刊
FEMS MICROBIOLOGY REVIEWS
卷 33, 期 5, 页码 917-941出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1574-6976.2009.00183.x
关键词
cyanobacteria; exopolysaccharides; extracellular polymeric substance biosynthesis; extracellular polymeric substances; released polysaccharides
类别
资金
- Fundacao Calouste Gulbenkian: Programa Ambiente e Saude [76910]
- FCT [SFRH/BD/22733/2005, SFRH/BPD/37045/2007]
- POCI 2010 (III Quadro Comunitario de Apoio)
- Acordo de Cooperacao Cientifica e Tecnologica GRICES/CNR [4.1.1.]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/22733/2005] Funding Source: FCT
Cyanobacterial extracellular polymeric substances (EPS) are mainly composed of high-molecular-mass heteropolysaccharides, with variable composition and roles according to the microorganism and the environmental conditions. The number of constituents - both saccharidic and nonsaccharidic - and the complexity of structures give rise to speculations on how intricate their biosynthetic pathways could be, and how many genes may be involved in their production. However, little is known regarding the cyanobacterial EPS biosynthetic pathways and regulating factors. This review organizes available information on cyanobacterial EPS, including their composition, function and factors affecting their synthesis, and from the in silico analysis of available cyanobacterial genome sequences, proposes a putative mechanism for their biosynthesis.
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