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Comparative Study
. 1992 Jun 15;284 ( Pt 3)(Pt 3):749-54.
doi: 10.1042/bj2840749.

cDNA cloning of human and rat brain myo-inositol monophosphatase. Expression and characterization of the human recombinant enzyme

G McAllister  1 , P Whiting, E A Hammond, M R Knowles, J R Atack, F J Bailey, R Maigetter, C I Ragan
Affiliations
Comparative Study

cDNA cloning of human and rat brain myo-inositol monophosphatase. Expression and characterization of the human recombinant enzyme

G McAllister et al. Biochem J. .

Abstract

Inositol monophosphatase (EC 3.1.3.25) is a key enzyme in the phosphoinositide cell-signalling system. Its role is to provide inositol required for the resynthesis of phosphatidylinositol and polyphosphoinositides. It is the probable pharmacological target for lithium action in brain. Using probes derived from the bovine inositol monophosphatase cDNA we have isolated cDNA clones encoding the human and rat brain enzymes. The enzyme is highly conserved in all three species (79% identical). The coding region of the human cDNA was inserted into a bacterial expression vector. The expressed recombinant enzyme was purified and its biochemical properties examined. The human enzyme is very similar to the bovine enzyme.

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