Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/678
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMohanty, Debasis-
dc.date.accessioned2016-01-22T08:38:38Z-
dc.date.available2016-01-22T08:38:38Z-
dc.date.issued2014-08-
dc.identifier.urihttp://hdl.handle.net/123456789/678-
dc.description.abstractBacterial phosphothreonine lyases catalyze a novel posttranslational modification involving formation of dehydrobutyrine/dehyroalanine by β elimination of the phosphate group of phosphothreonine or phosphoserine residues in their substrate proteins. Though there is experimental evidence for presence of dehydro amino acids in human proteins, no eukaryotic homologs of these lyases have been identified as of today. A comprehensive genome-wide search for identifying phosphothreonine lyase homologs in eukaryotes was carried out. Our fold-based search revealed structural and catalytic site similarity between bacterial phosphothreonine lyases and BLES03 (basophilic leukemia-expressed protein 03), a human protein with unknown function. Ligand induced conformational changes similar to bacterial phosphothreonine lyases, and movement of crucial arginines in the loop region to the catalytic pocket upon binding of phosphothreonine-containing peptides was seen during docking and molecular dynamics studies. Genome-wide search for BLES03 homologs using sensitive profile-based methods revealed their presence not only in eukaryotic classes such as chordata and fungi but also in bacterial and archaebacterial classes. The synteny of these archaebacterial BLES03-like proteins was remarkably similar to that of type IV lantibiotic synthetases which harbor LanL-like phosphothreonine lyase domains. Hence, context-based analysis reinforced our earlier sequence/structure-based prediction of phosphothreonine lyase catalytic function for BLES03. Our in silico analysis has revealed that BLES03-like proteins with previously unknown function are novel eukaryotic phosphothreonine lyases involved in biosynthesis of dehydro amino acids, whereas their bacterial and archaebacterial counterparts might be involved in biosynthesis of natural products similar to lantibiotics.en_US
dc.publisherOxford Uni.Pressen_US
dc.subjectGenome Biologyen_US
dc.titleGenome-wide search for eliminylating domains reveals novel function for BLES03-like proteins.en_US
dc.contributor.coauthorKhater, Shradha-
dc.keywordeliminylation, phosphothreonine lyase, fold-based function annotation, divergent evolution, genome context analysis, lanthionine synthetaseen_US
dc.journalGenome Biol Evol.en_US
dc.volumeno6en_US
dc.issueno8en_US
dc.pages2017–2033.en_US
Appears in Collections:Bioinformatics Centre, Publications

Files in This Item:
File Description SizeFormat 
Dr Mohanty.pdf2.71 MBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.