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International Journal of Medicinal Mushrooms
Импакт фактор: 1.423 5-летний Импакт фактор: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Печать: 1521-9437
ISSN Онлайн: 1940-4344

Выпуски:
Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v16.i2.20
pages 115-124

Three Types of Geranylgeranyl Diphosphate Synthases from the Medicinal Caterpillar Fungus, Cordyceps militaris (Ascomycetes)

Tiantian Lian
College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China; State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
Caihong Dong
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
Tao Yang
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Junde Sun
College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China

Краткое описание

Geranylgeranyl diphosphate synthase (GGPPS) is a key enzyme in the carotenoid biosynthetic pathway, catalyzing the synthesis of its C20 precursor. In the present study, three types of ggpps genes were cloned and analyzed from the Caterpillar Medicinal Fungus Cordyceps militaris, a valued carotenoid-producing species. The sequences were named as ggpps727, ggpps191, and ggpps595. The open reading frame codes for predicted polypeptides of 464, 550, and 431 aa. Three predicted GGPPSs had a high similarity to that from Beauveria bassiana ARSEF 2860 with identity of 73%, 71%, and 56%, respectively. Homology comparison of the deduced peptide sequences of the various GGPPSs revealed highly conserved domains. Both GGPPS727 and GGPPS191 from C. militaris contained all five domains highly conserved among prenyltransferases as well as two aspartate-rich DDXX(XX)D motifs in domains II and V, which have been proven essential for prenyltransferase activity. By constructing the phylogenetic tree of fungal GGPPSs, it was found that fungi-derived GGPPSs could be divided into three clusters, suggesting there were three types of GGPPSs in fungi. Each type may be responsible for a different metabolism. Three types of GGPPSs from C. militaris belonged to the different clusters separately. Expression analysis of three ggpps genes during the fruit body cultivation of C. militaris by real-time polymerase chain reaction (PCR) suggested the ggpps 191 gene may be involved in the synthesis of carotenoids and ggpps 727 may be responsible for primary metabolism. This is the first report of the GGPPS from C. militaris, a valued edible and medicinal fungus.


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