The enzyme tannase (EC 3.1.1.20) catalyzes the following reaction:[1]
digallate + H2O = 2 gallate
It is a key enzyme in the degradation of gallotannins and ellagicitannins, two types of hydrolysable tannins.[2] Specifically, tannase catalyzes the hydrolysis of ester and depside bonds of hydrolysable tannins to release glucose and gallic or ellagic acid.[3][2]
Tannase belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name is tannin acylhydrolase. Other names in common use include tannase S, and tannin acetylhydrolase.[4]
This enzyme has two known domains and one known active site.[3] Tannase can be found in plants, bacteria, and fungi and has different purposes depending on the organism it is found in.[2] Tannase also has many purposes for human use. The production of gallic acid is important in the pharmaceutical industry as it's needed to create trimethoprim, an antibacterial drug.[5] Tannase also has many applications in the food and beverage industry. Specifically, its used to make food and drinks taste better, either by removing turbidity from juices or wines, or removing the bitter taste of tannins in some food and drinks, such as acorn wine.[3] Additionally, because tannase can break ester bonds of glucose with various acids (chebulinic, gallic, and hexahydrophenic), it can be used in the process of fruit ripening.[6]
^Dyckerhoff H, Armbruster R (1933). "Zur Kenntnis der Tannase". Hoppe-Seyler's Z. Physiol. Chem. 219 (1–2): 38–56. doi:10.1515/bchm2.1933.219.1-2.38.
^ abcChandrasekaran, M.; Beena, P.S. (2013), "Tannase: source, biocatalytic characteristics, and bioprocesses for production", Marine Enzymes for Biocatalysis, Elsevier, pp. 259–293, doi:10.1533/9781908818355.3.259, ISBN 9781907568800, retrieved 2021-10-21
^ abcMatoba, Y.; Tanaka, N.; Sugiyama, M. (2013-07-24). "Crystal structure of tannase from Lactobacillus plantarum in the orthorhombic crystal". Proteins: Structure, Function, and Bioinformatics. doi:10.2210/pdb3wa6/pdb. Retrieved 2021-10-03.
^Cite error: The named reference pmid5965343 was invoked but never defined (see the help page).
^Yao, J.; Guo, G. S.; Ren, G. H.; Liu, Y. H. (2013). "Production, characterization and applications of tannase". Journal of Molecular Catalysis B: Enzymatic. 101: 137–147. doi:10.1016/j.molcatb.2013.11.018. ISSN 1381-1177 – via Elsevier.
^Jana, A.; Halder, S. K.; Banerjee, A.; Paul, T.; Pati, B.R.; Mondal, K.C.; Das Mohapatra, P.K. (2014-04-01). "Biosynthesis, structural architecture and biotechnological potential of bacterial tannase: A molecular advancement". Bioresource Technology. 157: 327–340. Bibcode:2014BiTec.157..327J. doi:10.1016/j.biortech.2014.02.017. ISSN 0960-8524. PMID 24613317.
The enzyme tannase (EC 3.1.1.20) catalyzes the following reaction: digallate + H2O = 2 gallate It is a key enzyme in the degradation of gallotannins and...
produces tannase. List of Penicillium species Selwal, M. K.; Yadav, A; Selwal, K. K.; Aggarwal, N. K.; Gupta, R; Gautam, S. K. (2011). "Tannase Production...
Ferulate and gallate esters, substrates of the closest relatives in the tannase family, are not converted. p-Nitrophenyl ester of aliphatic monocarboxylic...
montanense is an anamorph species of the genus of Penicillium which produces tannase. MycoBank UniProt ATCC Lima, J. S. D.; Cruz, R.; Fonseca, J. C.; Medeiros...
tannic acid. Digalloyl esters involve either -meta, or -para depside bonds. Tannase is an enzyme that uses digallate to produce gallic acid. This enzyme can...
He suggested its formation from galloyl-glycine by Penicillium in 1915. Tannase is an enzyme that Nierenstein used to produce m-digallic acid from gallotannins...
Zhiming (2012). "Synthesis of propyl gallate from tannic acid catalyzed by tannase from Aspergillus oryzae: Process optimization of transesterification in...
the common precursor of gallotannins and the related ellagitannins). Tannase is a key enzyme in the degradation of gallotannins that uses digallic acid...
depsidase is a type of enzyme that cuts depside bonds. One such enzyme is tannase. Gyrophoric acid, found in the lichen Cryptothecia rubrocincta, is a depside...
Lonepinella is a Gram-negative, facultatively anaerobic and tannase-producing genus of bacteria from the family of Pasteurellaceae with one known species...
have been patented to deal with the issue, such as the utilization of tannase to solubilize the cream. Another method developed was based on the identification...
He suggested its formation from galloyl-glycine by Penicillium in 1915. Tannase is an enzyme that Niederstein used to produce m-digallic acid from gallotannins...
interesting properties and the respective genes, for instance glucoamylase, tannase, lipase, phosphatases and many others. On the other hand, it is a very...
W.; He, Y.; Wu, X. H. (2011). "Properties and secondary structure of tannase from Penicillium herquei". Biotechnology and Bioprocess Engineering. 16...
Takuya (24 February 2006). "Role of Tannin-Binding Salivary Proteins and TannaseProducing Bacteria in the Acclimation of the Japanese Wood Mouse to Acorn...
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