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Information on EC 2.3.1.85 - fatty-acid synthase system and Organism(s) Bos taurus and UniProt Accession Q71SP7
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2.3.1.85 fatty-acid synthase systemIUBMB Comments
The animal enzyme is a multi-functional protein catalysing the reactions of EC 2.3.1.38 [acyl-carrier-protein] S-acetyltransferase, EC 2.3.1.39 [acyl-carrier-protein] S-malonyltransferase, EC 2.3.1.41 beta-ketoacyl-[acyl-carrier-protein] synthase I, EC 1.1.1.100 3-oxoacyl-[acyl-carrier-protein] reductase, EC 4.2.1.59 3-hydroxyacyl-[acyl-carrier-protein] dehydratase, EC 1.3.1.39 enoyl-[acyl-carrier-protein] reductase (NADPH, Re-specific) and EC 3.1.2.14 oleoyl-[acyl-carrier-protein] hydrolase. cf. EC 2.3.1.86, fatty-acyl-CoA synthase system.
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Word Map
- 2.3.1.85
- mycobacterium
- tuberculosis
-
mycolic
-
lipogenic
-
enoyl
-
fasciclin
- cerulenin
-
beta-ketoacyl-acyl
- malonyl-coa
- triclosan
- isoniazid
-
transacylase
-
enoyl-acyl
-
beta-ketoacyl
- thiolactomycin
- malonyl-acp
-
condensing
- acyl-acps
-
malonyl
- srebp-1c
-
fabgs
- medicine
- apicoplast
-
boutons
-
phosphopantetheinylation
- 4'-phosphopantetheine
-
ketoacyl
-
antituberculous
- thiacetazone
- nutrition
- analysis
The taxonomic range for the selected organisms is: Bos taurus
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Reaction Schemes
+
7
+
14
+
14
=
+
8
+
7
+
14
+
6
Synonyms
fasii, fatty-acid synthase, fas-ii, type ii fatty acid synthase, yeast fatty acid synthase, fatty acid synthase ii, fatty acid synthase i, type 2 fatty acid synthase, fatty acid synthase type 2, f09e10.3 protein, 
more
topSYNONYM 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
FAS
-
-
-
-
fatty-acid synthase
-
-
-
-
yeast fatty acid synthase
-
-
-
-
REACTION
REACTION DIAGRAM
COMMENTARY
ORGANISM
UNIPROT
LITERATURE
acetyl-CoA + n malonyl-CoA + 2n NADPH + 2n H+ = a long-chain fatty acid + (n+1) CoA + n CO2 + 2n NADP+
acetyl-CoA + n malonyl-CoA + 2n NADPH + 2n H+ = a long-chain fatty acid + (n+1) CoA + n CO2 + 2n NADP+
reaction mechanism
-
acetyl-CoA + n malonyl-CoA + 2n NADPH + 2n H+ = a long-chain fatty acid + (n+1) CoA + n CO2 + 2n NADP+
structure and regulation
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
decarboxylation
-
-
-
-
redox reaction
-
-
-
-
Acyl group transfer
-
-
-
-
thioester hydrolysis
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
acyl-CoA:malonyl-CoA C-acyltransferase (decarboxylating, oxoacyl- and enoyl-reducing and thioester-hydrolysing)
The animal enzyme is a multi-functional protein catalysing the reactions of EC 2.3.1.38 [acyl-carrier-protein] S-acetyltransferase, EC 2.3.1.39 [acyl-carrier-protein] S-malonyltransferase, EC 2.3.1.41 beta-ketoacyl-[acyl-carrier-protein] synthase I, EC 1.1.1.100 3-oxoacyl-[acyl-carrier-protein] reductase, EC 4.2.1.59 3-hydroxyacyl-[acyl-carrier-protein] dehydratase, EC 1.3.1.39 enoyl-[acyl-carrier-protein] reductase (NADPH, Re-specific) and EC 3.1.2.14 oleoyl-[acyl-carrier-protein] hydrolase. cf. EC 2.3.1.86, fatty-acyl-CoA synthase system.
CAS REGISTRY NUMBER
COMMENTARY
9045-77-6
-
SUBSTRATE
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
-
-
-
?
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
-
-
-
-
?
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
-
-
C20 and C22 fatty acids in the absence of thioesterase activity
?
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
-
multifunctional enzyme, involved in animal fat synthesis
-
-
?
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
acetyl-CoA + 7 malonyl-CoA + 14 NADPH + 14 H+
palmitate + 8 CoA + 7 CO2 + 14 NADP+ + 6 H2O
-
multifunctional enzyme, involved in animal fat synthesis
-
-
?
COFACTOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
iodoacetamide
-
beta-ketoacyl synthetase activity, acetyl-CoA but not malonyl-CoA protects
ORGANISM
COMMENTARY
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
physiological function
-
fatty acid synthase is a key enzyme regulating de novo fatty acid synthesis
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION
The reliability class of the localization prediction ranges from 1 (very reliable) to 5 (not reliable).
The reliability class of the localization prediction ranges from 1 (very reliable) to 5 (not reliable). FAS_BOVIN
2513
0
274554
Swiss-Prot
other Location (Reliability: 2)
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
0°C, inactivation after 12 h, reactivation after 2 h at 25°C in the presence of NADPH, not acetyl-CoA or NADH
-
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
relative FASN mRNA expression is upregulated by 9 and 5fold, respectively, for high-concentrate diet (85% concentrate: 15% roughage) and diet on endophyte-free tall fescue pastures with corn grain supplement compared with pasture diet, grain feeding upregulates FASN mRNA expression
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APPLICATION
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
analysis
simple mass spectrometry-based assay that affords monitoring of FASN activity and its product specificity. Purified FASN is incubated with 13C-labeled malonyl-CoA, acetyl-CoA, and NADPH, at defined time points the reaction mixture is spiked with an internal non-esterified palmitic acid standard and extracted, and the extract is analyzed directly, without vacuum evaporation and chemical derivatization, by direct-infusion high-resolution mass spectrometry in negative ion mode. The assay supports essentially noise-free detection and absolute quantification of de novo synthetized 13C-labeled non-esterified fatty acids
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Wakil, S.J.; Stoops, J.K.; Joshi, V.C.
Fatty acid synthesis and its regulation
Annu. Rev. Biochem.
52
537-579
1983
Anser sp., Bos taurus, Canis lupus familiaris, Gallus gallus, Columba sp., Oryctolagus cuniculus, Homo sapiens, Mus musculus, Rattus norvegicus
Duckett, S.K.; Pratt, S.L.; Pavan, E.
Corn oil or corn grain supplementation to steers grazing endophyte-free tall fescue. II. Effects on subcutaneous fatty acid content and lipogenic gene expression
J. Anim. Sci.
87
1120-1128
2009
Bos taurus
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