Difference between revisions of "Part:BBa K3038003"

Revision as of 08:34, 19 October 2019

Description

FadM is for E. coli long-chain acyl CoA thioesterase that is Thioesterase III.
Thioesterase III (FadM) is a long-chain acyl-CoA thioesterase that is involved in the β-oxidation of fatty acids.

https://biocyc.org/gene?orgid=ECOLI&id=G6244

For the competition, FadM is tagged in Cterm by a FLAG tag. This tag allows the purification of the protein in order to test the activity.

GenBank

FadM : GenBank: P77712
https://www.uniprot.org/uniprot/P77712

Protein Sequence

Without the Flag-tag :
MQTQIKVRGY HLDVYQHVNN ARYLEFLEEA RWDGLENSDS FQWMTAHNIA FVVVNININY RRPAVLSDLL TITSQLQQLN GKSGILSQVI TLEPEGQVVA DALITFVCID LKTQKALALE GELREKLEQM VK

Molecular size : 15.088 kDa (from nucleotide sequence)

Reference

Engineering of Bacterial Methyl Ketone Synthesis for Biofuels. Ee-Been Goh,a,c Edward E. K. Baidoo,a,c Jay D. Keasling,a,c,d and Harry R. Beller. Appl Environ Microbiol. 2012 Jan; 78(1): 70–80. doi: 10.1128/AEM.06785-11. PMCID: PMC3255637. PMID: 22038610

Usage and Biology

The enzyme is able to hydrolyze a number of related substrates. The best substrate is 3,5-tetradecadienoyl-CoA, which is a minor side product of oleate β-oxidation that is resistant to further degradation. The hydrolysis product, 3,5-tetradecadienoate, is released into the growth medium [Ren04a, Nie08]. Thioesterase III is expressed upon growth on oleic acid as the sole source of carbon [Ren04a, Nie08]. FadM is a member of the fad regulon; expression is induced by a number of fatty acids, with C18:1 as the best inducer [Feng09b]. Reports disagree on whether [Nie08a] or not [Feng09b] conjugated linoleic acid (CLA) induces an even higher level of expression of fadM.

Activity

Sequence and Features