Abstract
1. Purified cow mammary gland fatty acid synthetase synthesized long-chain unesterified and short-chain esterified fatty acids. 2. A direct relationship was observed between the amount of short-chain products synthesized and the concentration of acetyl-CoA in the incubation medium. 3. The short-chain products were identified as butyryl-CoA and hexanoyl-CoA. 4. Inhibition of the terminating thioester hydrolase of the fatty acid synthetase complex with phenylmethanesulphonyl fluoride did not inhibit the synthesis of short-chain products. 5. It is suggested that the synthesis of short-chain fatty acids involves the reverse of the 'loading' reaction.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- Carey E. M., Dils R. Fatty acid biosynthesis. V. Purification and characterisation of fatty acid synthetase from lactating-rabbit mammary gland. Biochim Biophys Acta. 1970 Sep 8;210(3):371–387. doi: 10.1016/0005-2760(70)90033-0. [DOI] [PubMed] [Google Scholar]
- Carey E. M., Dils R. Fatty acid biosynthesis. VI. Specificity for termination of fatty acid biosynthesis by fatty acid synthetase from lactating-rabbit mammary gland. Biochim Biophys Acta. 1970 Sep 8;210(3):388–399. doi: 10.1016/0005-2760(70)90034-2. [DOI] [PubMed] [Google Scholar]
- DeKay D. E., Bauman D. E., Davis C. L. Characterization of fatty acid synthesis by cow mammary subcellular fractions. J Dairy Sci. 1976 Aug;59(8):1513–1517. doi: 10.3168/jds.S0022-0302(76)84394-9. [DOI] [PubMed] [Google Scholar]
- EGGERER H., LYNEN F. [On the biosynthesis of fatty acids. II. Synthesis and properties of S-malonyl-coenzyme A]. Biochem Z. 1962;335:540–547. [PubMed] [Google Scholar]
- Grunnet I., Knudsen J. Medium chain acyl-thioester hydrolase activity in goat and rabbit mammary gland fatty acid synthetase complexes. Biochem Biophys Res Commun. 1978 Feb 28;80(4):745–749. doi: 10.1016/0006-291x(78)91308-6. [DOI] [PubMed] [Google Scholar]
- Hansen H. J., Carey E. M., Dils R. Fatty acid biosynthesis. VII. Substrate control of chain-length of products synthesised by rat liver fatty acid synthetase. Biochim Biophys Acta. 1970 Sep 8;210(3):400–410. doi: 10.1016/0005-2760(70)90035-4. [DOI] [PubMed] [Google Scholar]
- Knudsen J., Clark S., Dils R. Acyl-CoA hydrolase(s) in rabbit mammary gland which control the chain length of fatty acids synthesised. Biochem Biophys Res Commun. 1975 Aug 4;65(3):921–926. doi: 10.1016/s0006-291x(75)80473-6. [DOI] [PubMed] [Google Scholar]
- Knudsen J. Fatty acid synthetase from cow mammary gland tissue cells. Biochim Biophys Acta. 1972 Nov 30;280(3):408–414. doi: 10.1016/0005-2760(72)90246-9. [DOI] [PubMed] [Google Scholar]
- Knudsen J. The role of particulate esterification in chain length control of de novo synthesized fatty acids in liver and mammary gland. Comp Biochem Physiol B. 1976;53(1):3–7. doi: 10.1016/0305-0491(76)90086-9. [DOI] [PubMed] [Google Scholar]
- Kumar S. Functional deacylases of pigeon liver fatty acid synthetase complex. J Biol Chem. 1975 Jul 10;250(13):5150–5158. [PubMed] [Google Scholar]
- Maitra S. K., Kumar S. Crotonyl coenzyme A reductase activity of bovine mammary fatty acid synthetase. J Biol Chem. 1974 Jan 10;249(1):111–117. [PubMed] [Google Scholar]
- Marshall M. O., Knudsen J. Biosynthesis of triacylglycerols containing short-chain fatty acids in lactating cow mammary gland. Activity of diacylglycerol acyltransferase towards short-chain acyl-CoA esters. Eur J Biochem. 1977 Dec 1;81(2):259–266. doi: 10.1111/j.1432-1033.1977.tb11947.x. [DOI] [PubMed] [Google Scholar]
- Pullman M. E. A convenient and versatile method for the purification of CoA thiol esters. Anal Biochem. 1973 Jul;54(1):188–198. doi: 10.1016/0003-2697(73)90262-5. [DOI] [PubMed] [Google Scholar]