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Key Documents

T7638

Sigma-Aldrich

Thaumatin from Thaumatococcus daniellii

Sinónimos:

Thaumatin Protein

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.56

biological source

plant (Thaumatococcus daniellii)

Quality Level

form

powder

mol wt

~22 kDa

storage temp.

2-8°C

General description

Thaumatin is a super sweet protein extracted from the African plant katemfe, Thaumatococcus daniellii Benth. This non-toxic protein is a member of the broad family of pathogenesis-related proteins (group PR5). Thaumatin exists in five isoforms namely thaumatin I, II, III, a, and b.

Application

Thaumatin from Thaumatococcus daniellii has been used:
  • as a positive control/standard to detect the amount of recombinant thaumatin in the milk of transgenic mice using western blot
  • as a standard to compare its retention time with Vitis vinifera thaumatin-like proteins (VVTL1) occurring in free-run juice and determine the pathogenesis-related protein content in grape juices
  • as a model protein to study its interaction with free and ligated decavanadate

Biochem/physiol Actions

Recently it was shown the over expression of the thaumatin gene from Thaumatococcus daniellii in tomatoes caused the fruit to have a sweeter taste, suggesting that thaumatin could be used to enhance the taste of various foods.
Thaumatin is a zero-calorie sweetener and flavor enhancer that finds its use in food industries. It has antifungal activity and elicits protective functions in plants. Thaumatin is useful in pharmaceutics as it is a constituent of special low-calorie diets.

Quality

A mixture of thaumatin I and thaumatin II with traces of other sweet proteins.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Expression of functional plant sweet protein thaumatin II in the milk of transgenic mice
Lu R, et al.
Food and Bioproducts Processing, 125, 222-227 (2021)
Chae Un Kim et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(12), 4596-4600 (2009-03-05)
Polymorphism of water has been extensively studied, but controversy still exists over the phase transition between high-density amorphous (HDA) and low-density amorphous (LDA) ice. We report the phase behavior of HDA ice inside high-pressure cryocooled protein crystals. Using X-ray diffraction
Aleksey Firsov et al.
Protein expression and purification, 123, 1-5 (2016-03-12)
Thaumatin, a supersweet protein from the African plant katemfe (Thaumatococcus daniellii Benth.), is a promising zero-calorie sweetener for use in the food and pharmaceutical industries. Due to limited natural sources of thaumatin, its production using transgenic plants is an advantageous
Tuning the interactions of decavanadate with thaumatin, lysozyme, proteinase K and human serum proteins by its coordination to a pentaaquacobalt (ii) complex cation
Krivosudsky L, et al.
New. J. Chem., 43(45), 17863-17871 (2019)
Evaluation of pathogenesis-related protein content and protein instability of seven white grape (Vitis vinifera L.) clones from Casablanca Valley, Chile
Salazar FN, et al.
European Food Research and Technology, 234(3), 509-515 (2012)

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