title: Functional similarities between heterogeneously and homogenously expressed MscL constructs.
abstract: The mechanosensitive channel of large conductance MscL is a well-characterized mechanically gated non-selective ion channel, which often serves as a prototype mechanosensitive channel for mechanotransduction studies. However, there are some discrepancies between MscL constructs used in these studies, most notably unintended heterogeneous expression from some MscL expression constructs. In this study we investigate the possible cause of this expression pattern, and compare the original non-homogenously expressing constructs with our new homogeneously expressing one to confirm that there is little functional difference between them. In addition, a new MscL construct has been developed with an improved molar extinction coefficient at 280 nm, enabling more accurate protein quantification.
authors.affiliation: Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia.
authors.forename: Gamma
authors.initials: G
authors.lastname: Chi
authors.forename: Paul R
authors.initials: PR
authors.lastname: Rohde
authors.forename: Pietro
authors.initials: P
authors.lastname: Ridone
authors.forename: Ben
authors.initials: B
authors.lastname: Hankamer
authors.forename: Boris
authors.initials: B
authors.lastname: Martinac
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Landsberg
mesh_terms: D000595:Amino Acid Sequence; D003062:Codon; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D029968:Escherichia coli Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D007473:Ion Channels / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008081:Liposomes / Q000378:metabolism; D008969:Molecular Sequence Data; D017434:Protein Structure, Tertiary
chemical_list: D003062:Codon; D029968:Escherichia coli Proteins; D007473:Ion Channels; D008081:Liposomes; C086596:MscL protein, E coli