Kumar_2013_Biochem.Biophys.Res.Commun_438_526

Reference

Title : Characterization of bud emergence 46 (BEM46) protein: Sequence, structural, phylogenetic and subcellular localization analyses - Kumar_2013_Biochem.Biophys.Res.Commun_438_526
Author(s) : Kumar A , Kollath-Leiss K , Kempken F
Ref : Biochemical & Biophysical Research Communications , 438 :526 , 2013
Abstract :

The bud emergence 46 (BEM46) protein from Neurospora crassa belongs to the alpha/beta-hydrolase superfamily. Recently, we have reported that the BEM46 protein is localized in the perinuclear ER and also forms spots close by the plasma membrane. The protein appears to be required for cell type-specific polarity formation in N. crassa. Furthermore, initial studies suggested that the BEM46 amino acid sequence is conserved in eukaryotes and is considered to be one of the widespread conserved "known unknown" eukaryotic genes. This warrants for a comprehensive phylogenetic analysis of this superfamily to unravel origin and molecular evolution of these genes in different eukaryotes. Herein, we observe that all eukaryotes have at least a single copy of a bem46 ortholog. Upon scanning of these proteins in various genomes, we find that there are expansions leading into several paralogs in vertebrates. Usingcomparative genomic analyses, we identified insertion/deletions (indels) in the conserved domain of BEM46 protein, which allow to differentiate fungal classes such as ascomycetes from basidiomycetes. We also find that exonic indels are able to differentiate BEM46 homologs of different eukaryotic lineage. Furthermore, we unravel that BEM46 protein from N. crassa possess a novel endoplasmic-retention signal (PEKK) using GFP-fusion tagging experiments. We propose that three residues namely a serine 188S, a histidine 292H and an aspartic acid 262D are most critical residues, forming a catalytic triad in BEM46 protein from N. crassa. We carried out a comprehensive study on bem46 genes from a molecular evolution perspective with combination of functional analyses. The evolutionary history of BEM46 proteins is characterized by exonic indels in lineage specific manner.

PubMedSearch : Kumar_2013_Biochem.Biophys.Res.Commun_438_526
PubMedID: 23916612
Gene_locus related to this paper: neucr-q7sdx9

Related information

Gene_locus neucr-q7sdx9
Family neucr-q7sdx9    ABHD13-BEM46

Citations formats

Kumar A, Kollath-Leiss K, Kempken F (2013)
Characterization of bud emergence 46 (BEM46) protein: Sequence, structural, phylogenetic and subcellular localization analyses
Biochemical & Biophysical Research Communications 438 :526

Kumar A, Kollath-Leiss K, Kempken F (2013)
Biochemical & Biophysical Research Communications 438 :526