T5398
Transglutaminase from guinea pig liver
lyophilized powder, ≥1.5 units/mg protein
Synonym(s):
Protein-Glutamine-γ-Glutamyltransferase, Protein-glutamine:amine γ-glutamyltransferase
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About This Item
CAS Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
Recommended Products
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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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
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Resp. Sens. 1
Storage Class Code
11 - Combustible Solids
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)
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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
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.
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
Y van de Wal et al.
Journal of immunology (Baltimore, Md. : 1950), 161(4), 1585-1588 (1998-08-26)
Celiac disease (CD) is caused by gluten ingestion in susceptible individuals. Tissue transglutaminase (tTG)-specific Abs are characteristic of CD, and increased tTG activity has been observed in the jejunal biopsies of patients. Here we demonstrate that tTG selectively deamidates gluten
Richard L Eckert et al.
Physiological reviews, 94(2), 383-417 (2014-04-03)
Transglutaminases (TGs) are multifunctional proteins having enzymatic and scaffolding functions that participate in regulation of cell fate in a wide range of cellular systems and are implicated to have roles in development of disease. This review highlights the mechanism of
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