Nemčovičová I, Nemčovič M, Šesták S, Plšková M, Wilson IBH, Mucha J. Expression, purification and preliminary crystallographic analysis of Drosophila melanogaster lysosomal α-mannosidase.
Acta Crystallogr Sect F Struct Biol Cryst Commun 2012;
68:965-70. [PMID:
22869134 PMCID:
PMC3412785 DOI:
10.1107/s1744309112029375]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 06/28/2012] [Indexed: 11/10/2022]
Abstract
The lysosomal α-mannosidases are class II mannosidases that belong to glycoside hydrolase family 38 and play an important role in the degradation of asparagine-linked carbohydrates of glycoproteins. Based on peptide similarity to human and bovine lysosomal mannosidase (LM), recombinant α-mannosidase from Drosophila melanogaster (dLM408) was cloned and heterologously expressed in Pichia pastoris. The recombinant form of dLM408 designed for structural analysis lacks the transmembrane domain and was crystallized using standard vapour-diffusion and counter-diffusion techniques. The crystals grew as flat plates and as tetragonal bipyramids, respectively. The plate-shaped crystals exhibited the symmetry of space group P2(1)2(1)2(1) and diffracted to a minimum d-spacing of 3.5 Å.
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