Maltase - wikipedia Maltase Not to be confused with Maltese. Alpha - glucosidase Identifiers EC number 3.2. 1.20 CAS number 9001 - 42 - 7 Databases IntEnz IntEnz view BRENDA BRENDA entry ExPASy NiceZyme view KEGG KEGG entry MetaCyc metabolic pathway PRIAM profile PDB structures RCSB PDB PDBe PDBsum show Search PMC articles PubMed articles NCBI proteins Maltose Maltase ( EC 3.2. 1.20, alpha - glucosidase, glucoinvertase, glucosidosucrase, maltase - glucoamylase, alpha - glucopyranosidase, glucosidoinvertase, alpha - D - glucosidase, alpha - glucoside hydrolase, alpha - 1, 4 - glucosidase, alpha - D - glucoside glucohydrolase ) is an enzyme located in on the brush border of the small intestine that breaks down the disaccharide maltose. Maltase catalyzes the hydrolysis of maltose to the simple sugar glucose. This enzyme is found in plants, bacteria, and yeast. Acid maltase deficiency is categorized into three separate types based on the age of onset of symptoms in the affected individual. In most cases, it is equivalent to alpha - glucosidase, but the term `` maltase '' emphasizes the disaccharide nature of the substrate from which glucose is cleaved, and `` alpha - glucosidase '' emphasizes the bond, whether the substrate is a disaccharide or polysaccharide. Vampire bats are the only vertebrates known to not exhibit intestinal maltase activity. See also Maltase - glucoamylase Sucrase - isomaltase References Jump up ^ `` Maltase -- Definition from the Merriam - Webster Online Dictionary ''. Retrieved 2009 - 04 - 06. Jump up ^ Bruni CB, Sica V, Auricchio F, Covelli I ( September 1970 ). `` Further kinetic and structural characterization of the lysosomal alpha - D - glucoside glucohydrolase from cattle liver ''. Biochimica et Biophysica Acta. 212 ( 3 ) : 470 -- 7. doi : 10.1016 / 0005 - 2744 ( 70 ) 90253 - 6. PMID 5466143. Jump up ^ Flanagan PR, Forstner GG ( August 1978 ). `` Purification of rat intestinal maltase / glucoamylase and its anomalous dissociation either by heat or by low pH ''. The Biochemical Journal. 173 ( 2 ) : 553 -- 63. doi : 10.1042 / bj1730553. PMC 1185809. PMID 29602. Jump up ^ Larner, J. ( 1960 ). `` Other glucosidases ''. In Boyer, P.D. ; Lardy, H. ; Myrbäck, K. The Enzymes. 4 ( 2nd ed. ). New York : Academic Press. pp. 369 -- 378. Jump up ^ Sivakami S, Radhakrishnan AN ( December 1973 ). `` Purification of rabbit intestinal glucoamylase by affinity chromatography on Sephadex G - 200 ''. Indian Journal of Biochemistry & Biophysics. 10 ( 4 ) : 283 -- 4. PMID 4792946. Jump up ^ Sørensen SH, Norén O, Sjöström H, Danielsen EM ( September 1982 ). `` Amphiphilic pig intestinal microvillus maltase / glucoamylase. Structure and specificity ''. European Journal of Biochemistry. 126 ( 3 ) : 559 -- 68. doi : 10.1111 / j. 1432 - 1033.1982. tb06817. x. PMID 6814909. Jump up ^ Schondube JE, Herrera - M LG, Martínez del Rio C ( 2001 ). `` Diet and the evolution of digestion and renal function in phyllostomid bats '' ( PDF ). Zoology. 104 ( 1 ) : 59 -- 73. doi : 10.1078 / 0944 - 2006 - 00007. PMID 16351819. External links Maltases at the US National Library of Medicine Medical Subject Headings ( MeSH ) Structure and evolution of the mammalian maltase - glucoamylase and sucrase - isomaltase 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 Enzymes Activity Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme 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 ) Molecular and Cellular Biology portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=Maltase&oldid=828588732 '' Categories : EC 3.2. 1 Hidden categories : All articles with unsourced statements Articles with unsourced statements from July 2009 Talk Search About Wikipedia Беларуская Bosanski Català Deutsch Eesti Ελληνικά Español فارسی Français Galego 한국어 Հայերեն Italiano Limburgs Bahasa Melayu Nederlands 日本 語 Polski Português Русский Suomi Svenska 中文 15 more Edit links This page was last edited on 3 March 2018, at 14 : 38 ( UTC ). 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Question: where is maltase found in the human body
Answer: in on the brush border of the small intestine