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Localization and regulation of mouse pantothenate kinase 2
Author(s) -
Leonardi Roberta,
Zhang Yong-Mei,
Lykidis Athanasios,
Rock Charles O.,
Jackowski Suzanne
Publication year - 2007
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2007.08.056
Subject(s) - palmitoylcarnitine , coenzyme a , gene isoform , cytosol , biology , mitochondrion , subcellular localization , carnitine , biochemistry , kinase , microbiology and biotechnology , gene , enzyme , reductase
Coenzyme A (CoA) biosynthesis is initiated by pantothenate kinase (PanK) and CoA levels are controlled through differential expression and feedback regulation of PanK isoforms. PanK2 is a mitochondrial protein in humans, but comparative genomics revealed that acquisition of a mitochondrial targeting signal was limited to primates. Human and mouse PanK2 possessed similar biochemical properties, with inhibition by acetyl‐CoA and activation by palmitoylcarnitine. Mouse PanK2 localized in the cytosol, and the expression of PanK2 was higher in human brain compared to mouse brain. Differences in expression and subcellular localization should be considered in developing a mouse model for human PanK2 deficiency.