Function
Catalyzes the phosphorylation of pantothenate the first step in CoA biosynthesis. May play a role in the physiological regulation of the intracellular CoA concentration. Functionally redudant with PANK1 (PubMed:16897480). The phosphatase activity shows preference for normal or oxidatively damaged intermediates of 4'-phosphopantetheine, which provides strong indirect evidence that the phosphatase activity pre-empts damage in the CoA pathway (PubMed:27322068). Hydrolyzing excess 4'-phosphopantetheine could constitute a directed overflow mechanism to prevent its oxidation to the S-sulfonate, sulfonate, or other forms (PubMed:27322068). Hydrolyzing 4'-phosphopantetheine sulfonate or S-sulfonate would forestall their conversion to inactive forms of CoA and acyl carrier protein (PubMed:27322068).
Sequence
MAGQEDEYDPILDNKREAEAKSQVSVAADKNMAPSTSGTPIHRSGSRPQLDLSKAEIQGNLEERDPTILLPNQSDDISHLALDIGGSLIKLLYFSRHEDYSNDDDKRKRTIKERLGITNGNLRSYPVLGGRLHFVKFETHKINECLDFIHSKQLHRRDPYPWSSKTLPLGTGVIKVTGGGAFKFADLFKERLGVSIEKEDEMHCLVSGANFLLKAIRHEAFTHMEGEKEFVQIDPNDLYPYLLVNVGSGVSIIKVDGEGKFERVSGTNVGGGTYWGLGRLLTKCKSFDELLELSQKGDNSAIDMLVGDIYGGMDYSKIGLSASTIASSFGKAISENKELDDYRPEDISLSLLRMISYNIGQISYLNALRFGLKRIFFGGFFIRGHAYTMDTISFAVHFWSKGEMQAMFLRHEGFLGALGAFMSYEKHGLDDLMSHQLVERFPMGAPYTGGNIHGPPLGDLDEKISWMEKFVRRGTEITAPVPMTPSKTTGLGGFEVPSSRGSALRSDASALNVGVLHLVPTLEVFPLLADPKTYEPNTIDLSDQGEREYWLKVLSEHLPDLVDTAVASEGGTEDAKRRGDAFARAFSAHLARLMEEPAAYGKLGLANLLELREECLREFQFVDAYRSIKQRENEASLAVLPDLLEELDSMSEEARLLTLIEGVLAANIFDWGSRACVDLYHKGTIIEIYRMSRNKMQRPWRVDDFDAFKERMLGSGGKQPHRHKRALLFVDNSGADVILGMLPLAREFLRRGTEVVLVANSLPALNDVTAMELPDIVAGAAKHCDILRRAAEMGGLLVDAMVNPGDGSKKDSTSAPLMVVENGCGSPCIDLRQVSSELAAAAKDADLVVLEGMGRALHTNFNAQFQCEALKLAMVKNQRLAEKLIKGNIYDCVCRYEPPSL