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Pathway Description
Fatty Acid Elongation (Saturated)
Escherichia coli W
Category:
Metabolite Pathway
Sub-Category:
Metabolic
Created: 2024-12-16
Last Updated: 2024-12-16
The fatty acid elongation pathway shows an elongation cycle of an acyl-ACP chain by adding two carbons. Acetoacetyl-acp is produced from interaction of 3-oxoacyl-acp synthase 3 with malonyl-acp and Acetyl-CoA, and then Acetoacetyl-acp produce a 3-oxoacyl acp spontaneously. 3-oxoacyl acp will undergo the cycles of the elongation. The first step is converting the oxoacyl acp into a (3R) 3-hydroxyacyl(acp) through a 3-oxoacyl[acp] reductase.This second step converts the hydroxyacyl into a trans 2 enoyl acp through a protein complex conformed of a hydroxomyristoyl dehydratase and a hydroxydecanoyl dehydratase. The third step can be reached through two different reactions with a enoyl-acp reductase, involving NADPH or NADH. This leads to the production of a 2,3,4-saturated fatty acyl acp. For the final step the 2,3,4 fatty acyl acp is turned into a oxoacyl acp through a 3-oxoacyl acp synthase protein complex. The products of multiple of the elongation cycle are phospholipids, lipoproteins (saturated fatty acids), lauric and other fatty acid-containing compounds.
References
Fatty Acid Elongation (Saturated) References
Lai CY, Cronan JE: Isolation and characterization of beta-ketoacyl-acyl carrier protein reductase (fabG) mutants of Escherichia coli and Salmonella enterica serovar Typhimurium. J Bacteriol. 2004 Mar;186(6):1869-78. doi: 10.1128/jb.186.6.1869-1878.2004.
Pubmed: 14996818
Rawlings M, Cronan JE Jr: The gene encoding Escherichia coli acyl carrier protein lies within a cluster of fatty acid biosynthetic genes. J Biol Chem. 1992 Mar 25;267(9):5751-4.
Pubmed: 1556094
Oshima T, Aiba H, Baba T, Fujita K, Hayashi K, Honjo A, Ikemoto K, Inada T, Itoh T, Kajihara M, Kanai K, Kashimoto K, Kimura S, Kitagawa M, Makino K, Masuda S, Miki T, Mizobuchi K, Mori H, Motomura K, Nakamura Y, Nashimoto H, Nishio Y, Saito N, Horiuchi T, et al.: A 718-kb DNA sequence of the Escherichia coli K-12 genome corresponding to the 12.7-28.0 min region on the linkage map. DNA Res. 1996 Jun 30;3(3):137-55. doi: 10.1093/dnares/3.3.137.
Pubmed: 8905232
Coleman J, Raetz CR: First committed step of lipid A biosynthesis in Escherichia coli: sequence of the lpxA gene. J Bacteriol. 1988 Mar;170(3):1268-74. doi: 10.1128/jb.170.3.1268-1274.1988.
Pubmed: 3277952
Blattner FR, Plunkett G 3rd, Bloch CA, Perna NT, Burland V, Riley M, Collado-Vides J, Glasner JD, Rode CK, Mayhew GF, Gregor J, Davis NW, Kirkpatrick HA, Goeden MA, Rose DJ, Mau B, Shao Y: The complete genome sequence of Escherichia coli K-12. Science. 1997 Sep 5;277(5331):1453-62. doi: 10.1126/science.277.5331.1453.
Pubmed: 9278503
Hayashi K, Morooka N, Yamamoto Y, Fujita K, Isono K, Choi S, Ohtsubo E, Baba T, Wanner BL, Mori H, Horiuchi T: Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110. Mol Syst Biol. 2006;2:2006.0007. doi: 10.1038/msb4100049. Epub 2006 Feb 21.
Pubmed: 16738553
Heath RJ, Rock CO: Enoyl-acyl carrier protein reductase (fabI) plays a determinant role in completing cycles of fatty acid elongation in Escherichia coli. J Biol Chem. 1995 Nov 3;270(44):26538-42. doi: 10.1074/jbc.270.44.26538.
Pubmed: 7592873
Bergler H, Hogenauer G, Turnowsky F: Sequences of the envM gene and of two mutated alleles in Escherichia coli. J Gen Microbiol. 1992 Oct;138(10):2093-100. doi: 10.1099/00221287-138-10-2093.
Pubmed: 1364817
Kater MM, Koningstein GM, Nijkamp HJ, Stuitje AR: The use of a hybrid genetic system to study the functional relationship between prokaryotic and plant multi-enzyme fatty acid synthetase complexes. Plant Mol Biol. 1994 Aug;25(5):771-90. doi: 10.1007/bf00028873.
Pubmed: 8075395
Kauppinen S, Siggaard-Andersen M, von Wettstein-Knowles P: beta-Ketoacyl-ACP synthase I of Escherichia coli: nucleotide sequence of the fabB gene and identification of the cerulenin binding residue. Carlsberg Res Commun. 1988;53(6):357-70.
Pubmed: 3076376
Yamamoto Y, Aiba H, Baba T, Hayashi K, Inada T, Isono K, Itoh T, Kimura S, Kitagawa M, Makino K, Miki T, Mitsuhashi N, Mizobuchi K, Mori H, Nakade S, Nakamura Y, Nashimoto H, Oshima T, Oyama S, Saito N, Sampei G, Satoh Y, Sivasundaram S, Tagami H, Horiuchi T, et al.: Construction of a contiguous 874-kb sequence of the Escherichia coli -K12 genome corresponding to 50.0-68.8 min on the linkage map and analysis of its sequence features. DNA Res. 1997 Apr 28;4(2):91-113. doi: 10.1093/dnares/4.2.91.
Pubmed: 9205837
Magnuson K, Carey MR, Cronan JE Jr: The putative fabJ gene of Escherichia coli fatty acid synthesis is the fabF gene. J Bacteriol. 1995 Jun;177(12):3593-5. doi: 10.1128/jb.177.12.3593-3595.1995.
Pubmed: 7768872
Jackowski S, Rock CO: Altered molecular form of acyl carrier protein associated with beta-ketoacyl-acyl carrier protein synthase II (fabF) mutants. J Bacteriol. 1987 Apr;169(4):1469-73. doi: 10.1128/jb.169.4.1469-1473.1987.
Pubmed: 3549687
Edwards P, Nelsen JS, Metz JG, Dehesh K: Cloning of the fabF gene in an expression vector and in vitro characterization of recombinant fabF and fabB encoded enzymes from Escherichia coli. FEBS Lett. 1997 Jan 27;402(1):62-6. doi: 10.1016/s0014-5793(96)01437-8.
Pubmed: 9013860
This pathway was propagated using PathWhiz -
Pon, A. et al. Pathways with PathWhiz (2015) Nucleic Acids Res. 43(Web Server issue): W552–W559.
Propagated from SMP0000819
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