_EC 3.2.1.89 Arabinogalactan endo-beta-1,4-galactanase. 11 PDB entries  
EC 3.-.-.- Hydrolases. [17,508 PDB entries]
EC 3.2.-.- Glycosylases. [3,469 PDB entries]
EC 3.2.1.- Glycosidases, i.e. enzymes hydrolyzing O- and S-glycosyl compound [3,025 PDB entries]
EC 3.2.1.89 Arabinogalactan endo-beta-1,4-galactanase. [11 PDB entries]    
1fhl

Reaction: The enzyme specifically hydrolyzes (1->4)-beta-D-galactosidic linkages in type I arabinogalactans.
Other name(s): Arabinogalactanase. Endo-1,4-beta-galactanase. Galactanase.
Comments: This enzyme, isolated from the bacterium Bacillus subtilis, hydrolyzes the beta(1->4) bonds found in type I plant arabinogalactans, which are a component of the primary cell walls of dicots. The predominant product is a tetrasaccharide. Cf. Ec 3.2.1.181.
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There are 11 PDB entries in enzyme class E.C.3.2.1.89

  PDB code Protein
1fhl
Crystal structure of beta-1,4-galactanase from aspergillus aculeatus at 293k
Source: Aspergillus aculeatus. Organism_taxid: 5053
Chain: A (334 residues) CATH domain: 3.20.20.80
1fob
Crystal structure of beta-1,4-galactanase from aspergillus aculeatus at 100k
Source: Aspergillus aculeatus. Organism_taxid: 5053
Chain: A (334 residues) CATH domain: 3.20.20.80
1hjs
Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and ph optimum.
Source: Thielavia heterothallica. Myceliophthora thermophila. Organism_taxid: 78579. Expressed in: aspergillus oryzae. Expression_system_taxid: 5062. Other_details: myceliophthora thermophila is the anamorph name whilst thielavia heterothallic is the teleomorph name
Chains: A, B, C, D (332 residues) CATH domain: 3.20.20.80
1hju
Structure of two fungal beta-1,4-galactanases: searching for the basis for temperature and ph optimum.
Source: Thielavia heterothallica. Myceliophthora thermophila. Organism_taxid: 78579. Expressed in: aspergillus oryzae. Expression_system_taxid: 5062. Other_details: myceliophthora thermophila is the anamorph name whilst thielavia heterothallic is the teleomorph name
Chains: A, B, C, D (332 residues) CATH domain: 3.20.20.80
1r8l
The structure of endo-beta-1,4-galactanase from bacillus licheniformis
Source: Bacillus licheniformis. Organism_taxid: 1402. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chains: A, B (386 residues) CATH domain: 3.20.20.80
1ur0
The structure of endo-beta-1,4-galactanase from bacillus licheniformis in complex with two oligosaccharide products.
Source: Bacillus licheniformis. Organism_taxid: 1402. Atcc: 14580. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chains: A, B (387 residues) CATH domain: 3.20.20.80
2ccr
Structure of beta-1,4-galactanase
Source: Bacillus licheniformis. Organism_taxid: 1402. Atcc: 14580. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chains: A, B (387 residues) CATH domain: 3.20.20.80
2gft
Crystal structure of the e263a nucleophile mutant of bacillus licheniformis endo-beta-1,4-galactanase in complex with galactotriose
Source: Bacillus licheniformis. Organism_taxid: 1402. Expressed in: bacillus subtilis. Expression_system_taxid: 1423
Chains: A, B (386 residues) CATH domain: 3.20.20.80
2xom
Atomic resolution structure of tmcbm61 in complex with beta- 1,4-galactotriose
Source: Thermotoga maritima. Organism_taxid: 2336. Strain: ms8b. Atcc: 43589. Expressed in: escherichia coli. Expression_system_taxid: 511693.
Chain: A (145 residues) CATH domain: 2.60.120.260
2xon
Structure of tmcbm61 in complex with beta-1,4-galactotriose at 1.4 a resolution
Source: Thermotoga maritima. Organism_taxid: 2336. Strain: ms8b. Atcc: 43589. Expressed in: escherichia coli. Expression_system_taxid: 511693.
Chains: A, L (145 residues) CATH domain: 2.60.120.260
4bf7
Emericilla nidulans endo-beta-1,4-galactanase
Source: Emericella nidulans. Organism_taxid: 162425. Expressed in: komagataella pastoris. Expression_system_taxid: 4922
Chain: A (335 residues) CATH domain: 3.20.20.80