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SRE0024

Sigma-Aldrich

Glyceraldehyde-3-phosphate dehydrogenase human

recombinant, expressed in Escherichia coli

Synonym(s):

D-Glyceraldehyde-3-phosphate: NAD+ oxidoreductase (phosphorylating), GAPDH, Triosephosphate dehydrogenase

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About This Item

Enzyme Commission number:
1.2.1.12
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in E. coli

Quality Level

specific activity

≥80 units/mg protein

storage temp.

−20°C

General description

Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) localizes to the cytoplasm but can be translocated to the nucleus depending on cellular conditions. It is a tetramer containing identical chains. The gene encoding GAPDH is localized on human chromosome 12p13.

Application

Human glyceraldehyde-3-phosphate dehydrogenase has been used as a positive control for hydrogen sulfide treatment to detect sulfhydration of protein targets.

Biochem/physiol Actions

Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) catalyzes the reversible oxidative phosphorylation of glyceraldehyde-phosphate, which is a critical energy-yielding step in carbohydrate metabolism. It binds to several proteins including actin, tubulin, amyloid precursor, polyglutamine peptides, DRPLA (dentatorubral-pallidoluysian atrophy) and huntingtin. Phosphorylated GAPDH associates with cytoskeletal elements and controls microtubule dynamics in the early secretory pathway. GAPDH is also a component of the functional GAIT (interferon-?-activated inhibitor of translation) mRNP (messenger ribonucleoprotein). GAPDH expression is dysregulated during melanoma progression.

Unit Definition

One unit will reduce 1.0 μmole of 3-phosphoglycerate to D-glyceraldehyde 3-phosphate per minute in a coupled system with 3-phosphoglyceric phosphokinase (3-PGK) at pH 7.6 at 25 °C

Physical form

This product is recombinant, human GAPDH expressed in E. coli with an N-terminal histidine tag and has a predicted molecular mass of 37,984 Da. The product is lyophilized from a buffered solution with stabilizers.

Other Notes

Alternative number: CAS Number 9001-50-7

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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Deregulation of glyceraldehyde-3-phosphate dehydrogenase expression during tumor progression of human cutaneous melanoma.
Ramos D, et al.
Anticancer Research, 35(1), 439-444 (2015)
Mutant huntingtin: nuclear translocation and cytotoxicity mediated by GAPDH.
Bae B, et al.
Proceedings of the National Academy of Sciences of the USA, 103(9), 3405-3409 (2006)
Nuclear-translocated glyceraldehyde-3-phosphate dehydrogenase promotes poly (ADP-ribose) polymerase-1 activation during oxidative/nitrosative stress in stroke.
Nakajima H, et al.
The Journal of Biological Chemistry, 290(23), 14493-14503 (2015)
Hydrogen sulfide inhibits Kir2 and Kir3 channels by decreasing sensitivity to the phospholipid PIP2.
Ha J, et al.
The Journal of Biological Chemistry, RA117-RA117 (2018)
Glyceraldehyde-3-phosphate dehydrogenase is phosphorylated by protein kinase Ciota /lambda and plays a role in microtubule dynamics in the early secretory pathway.
Tisdale E J.
The Journal of Biological Chemistry, 277(5), 3334-3341 (2002)

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