Molecular weight (DA)
54kD
Immunogen
Purified recombinant human Mannose Phosphate Isomerase protein fragments expressed in E.coli.
Specificity
This antibody detects endogenous levels of Mannose Phosphate Isomerase and does not cross-react with related proteins.
Formulation
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Dilution rate
wb 1:1000 icc 1:300
Purification process (Immunogen)
The antibody was affinity-purified from mouse ascites by affinity-chromatography using epitope-specific immunogen.
Background
Phosphomannose isomerase catalyzes the interconversion of fructose-6-phosphate and mannose-6-phosphate and plays a critical role in maintaining the supply of D-mannose derivatives, which are required for most glycosylation reactions. Mutations in the MPI gene were found in patients with carbohydrate-deficient glycoprotein syndrome, type Ib. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014],
Function
catalytic activity:D-mannose 6-phosphate = D-fructose 6-phosphate.,cofactor:Binds 1 zinc ion per subunit.,disease:Defects in MPI are the cause of congenital disorder of glycosylation type 1B (CDG1B) [MIM:602579]; also known as carbohydrate-deficient glycoprotein syndrome type Ib (CDGS1B). Congenital disorders of glycosylation are metabolic deficiencies in glycoprotein biosynthesis that usually cause severe mental and psychomotor retardation. They are characterized by under-glycosylated serum glycoproteins. CDG1B is clinically characterized by protein-losing enteropathy.,function:Involved in the synthesis of the GDP-mannose and dolichol-phosphate-mannose required for a number of critical mannosyl transfer reactions.,pathway:Nucleotide-sugar biosynthesis; GDP-D-mannose biosynthesis; alpha-D-mannose 1-phosphate from D-fructose 6-phosphate: step 1/2.,similarity:Belongs to the mannose-6-phosp
Abbreviation
Mannose Phosphate Isomerase
Other name
PMI1;CDG1B;FLJ39201;Mannose 6 phosphate isomerase;Mannose-6-phosphate isomerase; MANNOSEPHOSPHATE ISOMERASE;MGC94106;MPI;MPI_HUMAN;Phosphohexomutase;phosphomannose isomerase 1;Phosphomannose isomerase;PMI;PMI1.
Fields
>>Fructose and mannose metabolism;>>Amino sugar and nucleotide sugar metabolism;>>Metabolic pathways;>>Biosynthesis of cofactors;>>Biosynthesis of nucleotide sugars
Human protein sequence Database
P34949
Mouse protein sequence database
Q924M7
Rat protein sequence database
Cellular localization
Cytoplasm .
Tissue expression
Expressed in all tissues, but more abundant in heart, brain and skeletal muscle.
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