Glycosyl hydrolase family 53. This domain belongs to family 53 of the glycosyl hydrolase classification. These enzymes are enzymes are endo-1,4- beta-galactanases (EC:3.2.1.89). The structure of this domain is known and has a TIM barrel fold.

Arabinogalactan endo-1,4-beta-galactosidase [Carbohydrate transport and metabolism].

Glycoside hydrolase family 113 beta-1,4-mannanase and similar proteins. Mannan endo-1,4-beta mannosidase (E.C 3.2.1.78) randomly cleaves (1->4)-beta-D-mannosidic linkages in mannans, galactomannans and glucomannans and is also called beta-1,4-mannanase, endo-1,4-beta-mannanase, endo-beta-1,4-mannase, beta-mannanase B, beta-1, 4-mannan 4-mannanohydrolase, endo-beta-mannanase, beta-D-mannanase, 1,4-beta-D-mannan mannanohydrolase, and 4-beta-D-mannan mannanohydrolase. (1->4)-beta-linked mannans are polysaccharides with a linear polymer backbone of (1->4)-beta-linked mannose units (in plants and fungi) or alternating mannose and glucose/galactose units (glucomannan in plants and fungi, and galactomannan and galactoglucomannan in plants), such as in the hemicellulose fraction of hard- and softwoods. Complete degradation of mannan requires a series of enzymes, including beta-1,4-mannanase. According to the CAZy database beta-1,4-mannanases are grouped into various glycoside hydrolase (GH) families; GH family 113 beta-1,4-mannanases include mostly bacterial and archaeal sequences.

Beta-1,4-galactanasefrom Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482],6GP5_B Beta-1,4-galactanase from Bacteroides thetaiotaomicron [Bacteroides thetaiotaomicron VPI-5482]

Beta-1,4-galactanasefrom Bacteroides thetaiotaomicron with galactose [Bacteroides thetaiotaomicron VPI-5482],6GPA_B Beta-1,4-galactanase from Bacteroides thetaiotaomicron with galactose [Bacteroides thetaiotaomicron VPI-5482]

ChainA, Arabinogalactan endo-1,4-beta-galactosidase [Ignisphaera aggregans DSM 17230],7OSK_B Chain B, Arabinogalactan endo-1,4-beta-galactosidase [Ignisphaera aggregans DSM 17230]

Structureof two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJS_B Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJS_C Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJS_D Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJU_A Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJU_B Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJU_C Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus],1HJU_D Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and pH optimum. [Thermothelomyces thermophilus]

Thestructure of endo-beta-1,4-galactanase from Bacillus licheniformis [Bacillus licheniformis],1R8L_B The structure of endo-beta-1,4-galactanase from Bacillus licheniformis [Bacillus licheniformis],1UR0_A The structure of endo-beta-1,4-galactanase from Bacillus licheniformis in complex with two oligosaccharide products. [Bacillus licheniformis],1UR0_B The structure of endo-beta-1,4-galactanase from Bacillus licheniformis in complex with two oligosaccharide products. [Bacillus licheniformis],1UR4_A The structure of endo-beta-1,4-galactanase from Bacillus licheniformis in complex with two oligosaccharide products. [Bacillus licheniformis],1UR4_B The structure of endo-beta-1,4-galactanase from Bacillus licheniformis in complex with two oligosaccharide products. [Bacillus licheniformis],2CCR_A Structure of Beta-1,4-Galactanase [Bacillus licheniformis],2CCR_B Structure of Beta-1,4-Galactanase [Bacillus licheniformis],2J74_A Structure of Beta-1,4-Galactanase [Bacillus licheniformis],2J74_B Structure of Beta-1,4-Galactanase [Bacillus licheniformis]

Uncharacterized protein in bgaB 5'region (Fragment) OS=Niallia circulans OX=1397 PE=3 SV=1

Arabinogalactan endo-beta-1,4-galactanase OS=Thermothelomyces thermophilus OX=78579 PE=1 SV=1

Probable arabinogalactan endo-beta-1,4-galactanase A OS=Neosartorya fischeri (strain ATCC 1020 / DSM 3700 / CBS 544.65 / FGSC A1164 / JCM 1740 / NRRL 181 / WB 181) OX=331117 GN=galA PE=3 SV=1

Endo-beta-1,4-galactanase OS=Bacillus licheniformis (strain ATCC 14580 / DSM 13 / JCM 2505 / CCUG 7422 / NBRC 12200 / NCIMB 9375 / NCTC 10341 / NRRL NRS-1264 / Gibson 46) OX=279010 GN=ganB PE=1 SV=1

Probable arabinogalactan endo-beta-1,4-galactanase A OS=Neosartorya fumigata (strain CEA10 / CBS 144.89 / FGSC A1163) OX=451804 GN=galA PE=3 SV=2