Modification of the targeting presequence of the bovine cytochrome P-450scc precursor lifting tissue-specific restrictions on its mitochondrial import.
It has been found that a recombinant cytochrome P-450scc precursor supplemented with an extra MRGSH6GIR sequence at the NH2-terminus (6His-pP450scc) is imported into isolated rat liver and heart mitochondria as well as into yeast mitochondria. The import is coupled with proteolytic processing of the precursor resulting in the mature size form of cytochrome P-450scc. Modification of the targeting presequence responsible for its increased positive charge is supposed to lift the previously suggested tissue-specific restrictions on the pP450scc import into mitochondria.
A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Russian Federation.
L A
LA
Novikova
A S
AS
Savel'ev
R A
RA
Zvyagil'skaya
V N
VN
Luzikov
D000302:Adrenal Cortex / Q000201:enzymology; D000595:Amino Acid Sequence; D000818:Animals; D001692:Biological Transport; D002175:Candida / Q000648:ultrastructure; D002417:Cattle; D002786:Cholesterol Side-Chain Cleavage Enzyme / Q000737:chemistry* / Q000378:metabolism*; D008928:Mitochondria / Q000378:metabolism; D008929:Mitochondria, Heart / Q000378:metabolism*; D008930:Mitochondria, Liver / Q000378:metabolism*; D008969:Molecular Sequence Data; D009928:Organ Specificity; D011498:Protein Precursors / Q000737:chemistry* / Q000378:metabolism*; D051381:Rats; D011994:Recombinant Proteins / Q000378:metabolism
D011498:Protein Precursors; D011994:Recombinant Proteins; D002786:Cholesterol Side-Chain Cleavage Enzyme