β-Mannosidase (
EC3.2.1.25}, mannanase, mannase, β-D-mannosidase, β-mannoside mannohydrolase, exo-β-D-mannanase, lysosomal β A mannosidase) is an
enzyme with
systematic nameβ-D-mannoside mannohydrolase, which is in humans encoded by the MANBAgene.[5][6][7][8][9][10] This enzyme
catalyses the following
chemical reaction
Hydrolysis of terminal, non-reducing β-D-mannose residues in β-D-mannosides
This gene encodes a member of the glycosyl hydrolase 2 family. The encoded protein localizes to the lysosome where it is the final exoglycosidase in the pathway for N-linked glycoprotein oligosaccharide catabolism. Mutations in this gene are associated with β-mannosidosis, a lysosomal storage disease that has a wide spectrum of neurological involvement.[5]
^Adams, M.; Richtmyer, N.K. & Hudson, C.S. (1943). "Some enzymes present in highly purified invertase preparations; a contribution to the study of fructofuranosidases, galactosidases, glucosidases and mannosidases". J. Am. Chem. Soc. 65 (7): 1369–1380.
doi:
10.1021/ja01247a029.
^Deuel, H.; Lewuenberger, R. & Huber, G. (1950). "Über den enzymatischen Abbau von Carubin, dem Galaktomannan aus Ceratonia siliqua L". Helv. Chim. Acta. 33 (4): 942–946.
doi:
10.1002/hlca.19500330424.
Gao J, Arbman G, He L, et al. (2008). "MANBA polymorphism was related to increased risk of colorectal cancer in Swedish but not in Chinese populations". Acta Oncol. 47 (3): 372–8.
doi:
10.1080/02841860701644052.
PMID17899454.
S2CID45674826.
Robinson WE, Montefiori DC, Mitchell WM (1987). "Evidence that mannosyl residues are involved in human immunodeficiency virus type 1 (HIV-1) pathogenesis". AIDS Res. Hum. Retroviruses. 3 (3): 265–82.
doi:
10.1089/aid.1987.3.265.
PMID2829950.
Blough HA, Pauwels R, De Clercq E, et al. (1986). "Glycosylation inhibitors block the expression of LAV/HTLV-III (HIV) glycoproteins". Biochem. Biophys. Res. Commun. 141 (1): 33–8.
doi:
10.1016/S0006-291X(86)80330-8.
PMID3099781.