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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:
5.3.1.8 (BRENDA, IUBMB)
MDL number:
MFCD00131899
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in E. coli

Quality Level

200

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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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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
Wenxia Fang et al.
Microbiology (Reading, England), 155(Pt 10), 3281-3293 (2009-07-04)
Phosphomannose isomerase (PMI) is an enzyme catalysing the interconversion of mannose 6-phosphate (Man-6-P) and fructose 6-phosphate (Fru-6-P). The reaction catalysed by PMI is the first committed step in the synthesis of mannose-containing sugar chains and provides a link between glucose
Susanne Brunner et al.
Plant biotechnology journal, 9(8), 897-910 (2011-03-29)
Plant resistance (R) genes are highly effective in protecting plants against diseases, but pathogens can overcome such genes relatively easily by adaptation. Consequently, in many cases R genes do not confer durable resistance in agricultural environments. One possible strategy to
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How to Work with Enzymes Supplied as Ammonium Sulfate Suspensions

Instructions for working with enzymes supplied as ammonium sulfate suspensions

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