5xqj

Crystal structure of a PL 26 exo-rhamnogalacturonan lyase from Penicillium chrysogenum complexed with unsaturated galacturonosyl rhamnose substituted with galactose

spinqualitylabelsall models 5xqj, resolution 2.75Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5xqj is a 8 chain structure with sequence from Penicillium chrysogenum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.75Å Ligands: CA, GAD, GAL, RAM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function B6H7Q7_PENRW Publication Abstract from PubMed Exo-rhamnogalacturonan lyase from Penicillium chrysogenum 31B (PcRGLX) was recently classified as a member of polysaccharide lyase (PL) family 26 along with hypothetical proteins derived from various organisms. In this study, we determined the crystal structure of PcRGLX as the first structure of a member of this family. Based on the substrate-binding orientation and substrate specificity, PcRGLX is an exo-type PL that cleaves rhamnogalacturonan from the reducing end. Analysis of PcRGLX-complex structures with reaction products indicate that the active site possesses an L-shaped cleft that can accommodate galactosyl side chains, suggesting side-chain-bypassing activity in PcRGLX. Furthermore, we determined the residues critical for catalysis by analyzing the enzyme activities of inactive variants. Crystal structure of exo-rhamnogalacturonan lyase from Penicillium chrysogenum as a member of polysaccharide lyase family 26.,Kunishige Y, Iwai M, Nakazawa M, Ueda M, Tada T, Nishimura S, Sakamoto T FEBS Lett. 2018 Mar 25. doi: 10.1002/1873-3468.13034. PMID:29574769 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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