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T5398

Sigma-Aldrich

Transglutaminase from guinea pig liver

lyophilized powder, ≥1.5 units/mg protein

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Synonym(s):
Protein-Glutamine-γ-Glutamyltransferase, Protein-glutamine:amine γ-glutamyltransferase
CAS Number:
Enzyme Commission number:
MDL number:
NACRES:
NA.54

form

lyophilized powder

Quality Level

specific activity

≥1.5 units/mg protein

mol wt

76.6 kDa

composition

Protein, ≥80% modified Warburg-Christian

solubility

H2O: soluble 1.0 mg/mL, clear

application(s)

diagnostic assay manufacturing

shipped in

dry ice

storage temp.

−20°C

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This Item
G2262G9270WH0007052M10
application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

-

application(s)

-

form

lyophilized powder

form

powder

form

solid

form

buffered aqueous solution

solubility

H2O: soluble 1.0 mg/mL, clear

solubility

-

solubility

-

solubility

-

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

mol wt

76.6 kDa

mol wt

-

mol wt

-

mol wt

-

Application

This product from Sigma has been used to demonstrate that tissue transglutaminase (tTG) selectively deamidates gluten peptides, which results in strongly enhanced T cell-stimulatory activity. It has also been used to assess immune responses to A-gliadin peptides. Furthermore, it has been used to demonstrate that tTG selectively modifies gliadin peptides that are recognized by gut-derived T cells in celiac disease.
Transglutaminase has been used in a study to improve quantifiable assays to fully characterize the role of transglutaminase in diseases such as Huntington′s disease and Alzheimer′s disease.Transglutaminase has also been used in a study to develop a nonradioactive dot blot assay for transglutaminase activity.

Biochem/physiol Actions

Transglutaminase from guinea pig liver consists of a single polypeptide chain of 691 amino acid residues. It has six potential glycosylation sites (Asn-X-Ser or Asn-X-Thr), but it is not glycosylated. The molecular mass is approximately 76.6 kDa. It is calcium dependent and has several calcium binding sites. The enzyme is inhibited by iodoacetamide and N-ethylmaleimide in the presence of calcium. It catalyzes the incorporation of small molecular weight amines into γ-glutamine sites of proteins. In the absence of small molecular weight amines, it catalyzes the cross linking of proteins that results in the formation of γ-glutamyl-ε-lysine side chain peptides. Liver transglutaminase is a nonzymogenic enzyme.

Unit Definition

One unit will catalyze the formation of 1.0 μmole of hydroxamate per min from Nα-Z-Gln-Gly and hydroxylamine at pH 6.0 at 37 °C. (L-Glutamic acid γ-monohydroxamate is the standard.)

Physical form

Lyophilized powder containing Tris and dithioerythritol

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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L Lorand et al.
Molecular and cellular biochemistry, 58(1-2), 9-35 (1984-01-01)
This paper is intended as a background to the topic of transglutaminases, while focusing on current ideas regarding the biological roles of these enzymes. Specifically, the following topics are discussed: geometry of forming gamma-glutamyl-epsilon-lysine cross-linked structures; energetic considerations; the gamma-glutamyl-epsilon-lysine
M P M Adriaanse et al.
Alimentary pharmacology & therapeutics, 37(4), 482-490 (2013-01-08)
Enterocyte damage is the hallmark of coeliac disease (CD) resulting in malabsorption. Little is known about the recovery of enterocyte damage and its clinical consequences. Serum intestinal fatty acid binding protein (I-FABP) is a sensitive marker to study enterocyte damage.
Jessica C Kiefte-de Jong et al.
Gastroenterology, 144(4), 726-735 (2013-01-15)
Celiac disease in pregnant women has been associated with poor growth of the fetus, but little is known about how the level of celiac disease affects fetal growth or birth outcomes. We assessed the associations between levels of antibodies against
R P Anderson et al.
Nature medicine, 6(3), 337-342 (2000-03-04)
Celiac disease (CD) is an increasingly diagnosed enteropathy (prevalence, 1:200-1:300) that is induced by dietary exposure to wheat gliadins (as well as related proteins in rye and barley) and is strongly associated with HLA-DQ2 (alpha1*0501, beta1*0201), which is present in
Mechanism of action of guinea pig liver transglutaminase. I. Purification and properties of the enzyme: identification of a functional cysteine essential for activity.
J E Folk et al.
The Journal of biological chemistry, 241(23), 5518-5525 (1966-12-10)

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