RRC ID 6644
Author Saito T, Ochiai H.
Title Identification of Delta5-fatty acid desaturase from the cellular slime mold dictyostelium discoideum.
Journal Eur J Biochem
Abstract cDNA fragments putatively encoding amino acid sequences characteristic of the fatty acid desaturase were obtained using expressed sequence tag (EST) information of the Dictyostelium cDNA project. Using this sequence, we have determined the cDNA sequence and genomic sequence of a desaturase. The cloned cDNA is 1489 nucleotides long and the deduced amino acid sequence comprised 464 amino acid residues containing an N-terminal cytochrome b5 domain. The whole sequence was 38.6% identical to the initially identified Delta5-desaturase of Mortierella alpina. We have confirmed its function as Delta5-desaturase by over expression mutation in D. discoideum and also the gain of function mutation in the yeast Saccharomyces cerevisiae. Analysis of the lipids from transformed D. discoideum and yeast demonstrated the accumulation of Delta5-desaturated products. This is the first report concering fatty acid desaturase in cellular slime molds.
Volume 265(2)
Pages 809-14
Published 1999-10-1
DOI 10.1046/j.1432-1327.1999.00789.x
PII ejb789
PMID 10504413
MeSH Amino Acid Sequence Animals Base Sequence Cloning, Molecular Delta-5 Fatty Acid Desaturase Dictyostelium / enzymology* Fatty Acid Desaturases / chemistry Fatty Acid Desaturases / genetics* Fatty Acids / analysis Gene Expression Regulation, Fungal Molecular Sequence Data Mutation Polymorphism, Restriction Fragment Length Saccharomyces cerevisiae / chemistry Saccharomyces cerevisiae / genetics Sequence Alignment Transformation, Genetic
Times Cited 16
Cellular slime molds G02083