Structure of apo structure of GH36 alpha-galactosidase from Thermotoga maritimaStructure of apo structure of GH36 alpha-galactosidase from Thermotoga maritima

Structural highlights

5m0x is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:,
Activity:Alpha-galactosidase, with EC number 3.2.1.22
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Publication Abstract from PubMed

Glycoside hydrolases (GHs) have attracted considerable attention as targets for therapeutic agents, and thus mechanism-based inhibitors are of great interest. We report the first structural analysis of a carbocyclic mechanism-based GH inactivator, the results of which show that the two Michaelis complexes are in 2 H3 conformations. We also report the synthesis and reactivity of a fluorinated analogue and the structure of its covalently linked intermediate (flattened 2 H3 half-chair). We conclude that these inactivator reactions mainly involve motion of the pseudo-anomeric carbon atom, knowledge that should stimulate the design of new transition-state analogues for use as chemical biology tools.

Structural Snapshots for Mechanism-Based Inactivation of a Glycoside Hydrolase by Cyclopropyl Carbasugars.,Adamson C, Pengelly RJ, Shamsi Kazem Abadi S, Chakladar S, Draper J, Britton R, Gloster TM, Bennet AJ Angew Chem Int Ed Engl. 2016 Nov 21;55(48):14978-14982. doi:, 10.1002/anie.201607431. Epub 2016 Oct 26. PMID:27783466[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. Adamson C, Pengelly RJ, Shamsi Kazem Abadi S, Chakladar S, Draper J, Britton R, Gloster TM, Bennet AJ. Structural Snapshots for Mechanism-Based Inactivation of a Glycoside Hydrolase by Cyclopropyl Carbasugars. Angew Chem Int Ed Engl. 2016 Nov 21;55(48):14978-14982. doi:, 10.1002/anie.201607431. Epub 2016 Oct 26. PMID:27783466 doi:http://dx.doi.org/10.1002/anie.201607431

5m0x, resolution 1.80Å

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