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Isolation of a Δ5-Fatty Acid Desaturase Gene fromMortierella alpina

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Michaelson, Louise V., Lazarus, Colin M., Griffiths, Gareth, Napier, Johnathan A., Stobart, A. Keith·1998·Journal of Biological Chemistry

Abstract

Arachidonic acid (C20:4 Delta5,8,11,14) is a polyunsaturated fatty acid synthesized by the Delta5-fatty acid desaturation of di-homo-gamma-linolenic acid (C20:3 Delta8,11,14). In mammals, it is known to be a precursor of the prostaglandins and the leukotrienes but it is also accumulated by the filamentous fungus Mortierella alpina. We have isolated a cDNA encoding the Delta5-fatty acid desaturase from M. alpina via a polymerase chain reaction-based strategy using primers designed to the conserved histidine box regions of microsomal desaturases, and confirmed its function by expression in the yeast Saccharomyces cerevisiae. Analysis of the lipids from the transformed yeast demonstrated the accumulation of arachidonic acid. The M. alpina Delta5-desaturase is the first example of a cloned Delta5-desaturase, and differs from other fungal desaturases previously characterized by the presence of an N-terminal domain related to cytochrome b5.

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Metadata

Authors
Michaelson, L. V., Lazarus, C. M., Griffiths, G., Napier, J. A., & Stobart, A. K.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-07
Volume
273
Issue
30
Pages
19055-19059
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2050630630
Cited by
161
References
0
FWCI
6.97
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Isolation of a Δ5-Fatty Acid Desaturase Gene fromMortierella alpina. https://app.cochat.ai/papers/10.1074/jbc.273.30.19055
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Michaelson, L. V., Lazarus, C. M., Griffiths, G., Napier, J. A., & Stobart, A. K. (1998). Isolation of a Δ5-Fatty Acid Desaturase Gene fromMortierella alpina. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.273.30.19055

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