Β-マンノシダーゼ

β-マンノシダーゼ(Beta-Mannosidase、EC 3.2.1.25)は、β-D-マンノシドの非還元末端からβ-D-マンノースを切り出す酵素である。系統名は、β-D-マンノシド マンノヒドロラーゼ(beta-D-mannoside mannohydrolase)。である。マンナナーゼ(mannanase)、マンナーゼ(mannase)等とも言う。ヒトでは、MANBA遺伝子がコードする。 この遺伝子は、GHファミリー2の酵素をコードする。コードされた蛋白質はリソソームに局在し、ここで、N-結合オリゴ糖の異化経路の最後のエキソグリコシダーゼとして働く。この遺伝子の変異は、幅広い神経障害を引き起こすリソソーム蓄積症であるβ-マンノシドーソスを引き起こす。 ^ a b “Entrez Gene: mannosidase”. 2013年8月17日閲覧。 ^ Chen H, Leipprandt JR, Traviss CE, Sopher BL, Jones MZ, Cavanagh KT, Friderici KH (February 1995). “Molecular cloning and characterization of bovine beta-mannosidase”. J. Biol. Chem. 270 (8): 3841–8. doi:10.1074/jbc.270.8.3841. PMID 7876128.  ^ Adams, M., Richtmyer, N.K. and 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.  ^ Bartholomew, B.A. and Perry, A.L. 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