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P2621

Sigma-Aldrich

Phosphomannose Isomerase from Escherichia coli

recombinant, expressed in E. coli, ammonium sulfate suspension, ≥50 units/mg protein

Synonym(s):

D-Mannose-6-phosphate ketol-isomerase, Mannose Phosphate Isomerase, PMI

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About This Item

Enzyme Commission number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in E. coli

Quality Level

form

ammonium sulfate suspension

specific activity

≥50 units/mg protein

storage temp.

2-8°C

Application

PMI is used to study cell wall synthesis and energy production. PMI has been used to study how EDTA and metal ions, such as Zn++, Co++, Fe++, Mn++ and Cu++., can affect recovery and thermal stability. It may be used to study PMI′s effect on various alginate biosynthetic enzymes such as phosphomannomutase (PMM), GDP-mannose pyrophosphorylase (GMP), and GDP-mannose dehydrogenase (GMD).

Biochem/physiol Actions

Phosphomannose Isomerase (PMI) catalyses the interconversion of mannose 6-phosphate (Man-6-P) and fructose 6-phosphate (Fru-6-P), which provides a link between glucose metabolism and mannosylation.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Unit Definition

One unit will convert 1.0 μmole of D-mannose 6-phosphate to D-fructose 6-phosphate per min at pH 7.6 at 25 °C, using a coupled enzyme system with phosphoglucose isomerase and glucose-6-phosphate dehydrogenase.

Physical form

Supplied as a suspension in 3.2 M ammonium sulfate

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Stéphanie Desvergnes et al.
Bioorganic & medicinal chemistry, 20(4), 1511-1520 (2012-01-25)
In the design of inhibitors of phosphosugar metabolizing enzymes and receptors with therapeutic interest, malonate has been reported in a number of cases as a good and hydrolytically-stable surrogate of the phosphate group, since both functions are dianionic at physiological
Michael Newcomb et al.
Applied microbiology and biotechnology, 90(2), 625-634 (2011-02-15)
Clostridium thermocellum, an anaerobic, thermophilic, and ethanogenic bacterium produces a large cellulase complex termed the cellulosome and many free glycosyl hydrolases. Most cellulase genes scatter around the genome. We mapped the transcripts of the six-gene cluster celC-glyR3-licA-orf4-manB-celT and determined their
Studies on the phosphomannose isomerase of Amorphophallus konjac C. Koch II. Effect of divalent metal ions on the EDTA-treated enzyme
Takao Murata
Plant & Cell Physiology, 16, 963-970 (1975)
Craig T Narasaki et al.
PloS one, 6(10), e25514-e25514 (2011-11-09)
Coxiella burnetii, the etiologic agent of human Q fever, is a gram-negative and naturally obligate intracellular bacterium. The O-specific polysaccharide chain (O-PS) of the lipopolysaccharide (LPS) of C. burnetii is considered a heteropolymer of the two unusual sugars β-D-virenose and
Russell Dahl et al.
Journal of medicinal chemistry, 54(10), 3661-3668 (2011-05-05)
We report the discovery and validation of a series of benzoisothiazolones as potent inhibitors of phosphomannose isomerase (PMI), an enzyme that converts mannose-6-phosphate (Man-6-P) into fructose-6-phosphate (Fru-6-P) and, more importantly, competes with phosphomannomutase 2 (PMM2) for Man-6-P, diverting this substrate

Articles

Instructions for working with enzymes supplied as ammonium sulfate suspensions

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