Variant cDNA sequences of human ATP:citrate lyase: cloning, expression, and purification from baculovirus-infected insect cells.
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Lord KA, Wang XM, Simmons SJ, Bruckner RC, Loscig J, O'Connor B, Bentley R, Smallwood A, Chadwick CC, Stevis PE, Ciccarelli RB
Variant cDNA sequences of human ATP:citrate lyase: cloning, expression, and purification from baculovirus-infected insect cells.
Protein Expr Purif. 1997 Feb;9(1):133-41.
- PubMed ID
- 9116495 [ View in PubMed]
- Abstract
ATP:citrate lyase (ACL) is a major generator of cytosolic acetyl-coenzymeA, which is required for both fatty acid and cholesterol biosynthesis. The human ACL (hACL) cDNA was cloned by RT-PCR, and our results indicate the existence of previously unknown sequence variations in hACL. Expression of the hACL cDNA in Spodoptera frugiperda 9 insect cells resulted in the production of high levels of soluble, active enzyme. The recombinant protein (re-hACL) was purified to homogeneity from the soluble lysate of infected cells and was observed to exist as a tetramer by gel filtration chromatography. Kinetic analyses indicated that the re-hACL and rat ACL have very similar enzymological properties. The facile preparation of milligram quantities of purified, active re-hACL affords the opportunity to characterize the enzyme for structure-based design of hypolipidemic drugs, and to further examine the functional significance of the sequence variations.