Mannan endo-1,4-β-mannosidase

Mannan endo-1,4-β-mannosidase (EC 3.2.1.78, endo-1,4-β-mannanase, endo-β-1,4-mannase, β-mannanase B, β-1, 4-mannan 4-mannanohydrolase, endo-β-mannanase, β-D-mannanase, 1,4-β-D-mannan mannanohydrolase) is an enzyme with systematic name 4-β-D-mannan mannanohydrolase. It catalyses the hydrolysis of (1→4)-β-D-mannosidic linkages in mannans, galactomannans and glucomannans. The cleavage occurs at random internal sites within the chain, as denoted by the prefix "endo".

References

Eriksson AF (1968). "Purification and characterisation of a fungal β-mannanase". Acta Chem. Scand. 22: 1924–1934. doi:10.3891/acta.chem.scand.22-1924.
Reese ET, Shibata Y (April 1965). "β-Mannanases in fungi". Canadian Journal of Microbiology. 11 (2): 167–83. doi:10.1139/m65-023. PMID 14323029.

External links

Mannan+endo-1,4-beta-mannosidase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Hydrolase: sugar hydrolases (EC 3.2)

3.2.1: Glycoside hydrolases

Disaccharidase	Sucrase/Sucrase-isomaltase/Invertase Maltase Trehalase Lactase
Glucosidases	Cellulase Alpha-glucosidase Acid Neutral AB Neutral C Beta-glucosidase cytosolic Debranching enzyme
Other	Amylase Alpha-amylase Chitinase Lysozyme Neuraminidase NEU1 NEU2 NEU3 NEU4 Bacterial neuraminidase Viral neuraminidase Galactosidases Alpha Beta alpha-Mannosidase Glucuronidase Klotho Hyaluronidase Pullulanase Glucosylceramidase lysosomal non-lysosomal Galactosylceramidase Alpha-N-acetylgalactosaminidase NAGA Alpha-N-acetylglucosaminidase Fucosidase Hexosaminidase HEXA HEXB Iduronidase Maltase-glucoamylase Heparanase HPSE2

3.2.2: Hydrolysing
N-Glycosyl compounds

DNA glycosylases: Oxoguanine glycosylase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Portal:

Biology

Category:

EC 3.2.1