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Published on: June 13, 2021
Cloning and characterization of a gene encoding HMG-CoA reductase from Ganoderma lucidum and its functional
Chang-Hua Shang1, Fen Zhu, Na Li
1College of Life Sciences, Nanjing Agricultural University Key Laboratory for Microbiological Engineering of the Agricultural Environment, Ministry of Agriculture.
Abstract:
A gene encoding 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR) was isolated from a triterpene-producing fungus, Ganoderma lucidum (Reishi or Lingzhi). This report provides the complete nucleotide sequence of the full-length cDNA encoding HMGR and its genomic DNA sequence. The cDNA of the HMGR (GenBank Accession no., EU263989) was found to contain an open reading frame (ORF) of 3,681 bp encoding a 1,226-amino-acid polypeptide, whereas the HMGR genomic DNA sequence (GenBank Accession no., EU263990) consisted of 4,262 bp and contained seven exons and six introns. The deduced amino acid sequence of G. lucidum HMGR showed significant homology to the known HMGRs from Ustilago maydis and Cryptococcus neoformans, and contained four conserved domains. Gene expression analysis showed that the expression level was relatively low in mycelia incubated for 10, 12, and 14 d, and reached the highest level in the primordia. Functional complementation of Gl-HMGR in a HMGR-deficient mutant yeast strain indicated that the cloned cDNA encoded a HMG-CoA reductase.
