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Merck

P2621

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

UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
MDL number:
Specific activity:
≥50 units/mg protein
Recombinant:
expressed in E. coli
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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.

Physical form

Supplied as a suspension in 3.2 M ammonium sulfate

Other Notes

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.


Storage Class

12 - Non Combustible Liquids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)



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Articles

硫酸アンモニウム懸濁液として提供される酵素の使用方法

Instructions for working with enzymes supplied as ammonium sulfate suspensions


Thangamani Rajesh et al.
Applied microbiology and biotechnology, 93(4), 1685-1693 (2011-09-29)
Phosphomannose isomerases (PMIs) in bacteria and fungi catalyze the reversible conversion of D-fructose-6-phosphate to D-mannose-6-phosphate during biosynthesis of GDP-mannose, which is the main intermediate in the mannosylation of important cell wall components, glycoproteins, and certain glycolipids. In the present study
Daisuke Tsuji et al.
Annals of neurology, 69(4), 691-701 (2011-04-27)
Novel recombinant human lysosomal β-hexosaminidase A (HexA) was developed for enzyme replacement therapy (ERT) for Tay-Sachs and Sandhoff diseases, ie, autosomal recessive GM2 gangliosidoses, caused by HexA deficiency. A recombinant human HexA (Om4HexA) with a high mannose 6-phosphate (M6P)-type-N-glycan content
Matthew R Amos et al.
Applied and environmental microbiology, 77(3), 776-785 (2010-12-15)
Extracellular polysaccharide (EPS) is produced by diverse bacterial pathogens and fulfills assorted roles, including providing a structural matrix for biofilm formation and more specific functions in virulence, such as protection against immune defenses. We report here the first investigation of