Colin Hughes

The importance of boundaries (2007)

Colin Hughes

In this paper the former Australian Electoral Commissioner considers the issue of electorate boundary changes. The paper provides a comprehensive review of the 2006 redistributions in NSW and...

The importance of boundaries (2007)

Colin Hughes

In this paper the former Australian Electoral Commissioner considers the issue of electorate boundary changes. The paper provides a comprehensive review of the 2006 redistributions in NSW and...

A study of training and development (T&D) in the Irish financial services sector (2006)

Hughes, Colin

The proliferation of reports on 'lifelong learning' in recent years has brought to the fore the importance of workplace learning. In the present knowledge economy companies with highly knowledgeable...

Phylogeny of Robinioid Legumes (Fabaceae) Revisited: Coursetia and Gliricidia Recircumscribed, and a Biogeographical Appraisal of the Caribbean Endemics (2003)

Matt Lavin, Martin F. Wojciechowski, Peter Gasson, Colin Hughes, Elisabeth Wheeler

Morphological data and sequences from the nuclear ribosomal ITS region, and the chloroplast trnL intron and matK locus were sampled from robinioid legumes to infer phylogenetic relationships. The...

Male mating strategies and the mating system of great-tailed grackles (2000)

Johnson, Kristine, DuVal, Emily, Kielt, Megan, Hughes, Colin

Great-tailed grackles (Quiscalus mexicanus) are sexually dimorphic, dichromatic, colonially nesting blackbirds. In this study, males pursued three basic types of conditional mating strategies, each...

Expression of the E.coli hemolysin secretion gene hlyB involves transcript anti-termination within the hly operon (1988)

Koronakis, Vassilis, Cross, Michael, Hughes, Colin

The genes hly A and hly B dictating synthesis and secretion of hemolytic toxin by Escherichia coli are transcribed as part of an operon hly C,hly A,hly B but are separated by an inverted repeat and...

A Novel Membrane Protein Influencing Cell Shape and Multicellular Swarming of Proteus mirabilis

Hay, Nicole A., Tipper, Donald J., Gygi, Daniel, Hughes, Colin

Swarming in Proteus mirabilis is characterized by the coordinated surface migration of multicellular rafts of highly elongated, hyperflagellated swarm cells. We describe a transposon mutant, MNS185,...

Rapid Turnover of FlhD and FlhC, the Flagellar Regulon Transcriptional Activator Proteins, during Proteus Swarming

Claret, Laurent, Hughes, Colin

The enterobacterial flhDC master operon activates expression of the flagellar biogenesis gene hierarchy and also represses cell division. During Proteus mirabilis differentiation into elongated...

Membrane Interaction of Escherichia coli Hemolysin: Flotation and Insertion-Dependent Labeling by Phospholipid Vesicles

Hyland, Caroline, Vuillard, Laurent, Hughes, Colin, Koronakis, Vassilis

The 1,024-amino-acid acylated hemolysin of Escherichia coli subverts host cell functions and causes cell lysis. Both activities require insertion of the toxin into target mammalian cell membranes. To...

Acylation of Escherichia coli Hemolysin: A Unique Protein Lipidation Mechanism Underlying Toxin Function

Stanley, Peter, Koronakis, Vassilis, Hughes, Colin

The pore-forming hemolysin (HlyA) of Escherichia coli represents a unique class of bacterial toxins that require a posttranslational modification for activity. The inactive protoxin pro-HlyA is...

Transition to the open state of the TolC periplasmic tunnel entrance

Andersen, Christian, Koronakis, Eva, Bokma, Evert, Eswaran, Jeyanthy, Humphreys, Daniel, Hughes, Colin, ...

The TolC channel-tunnel spans the bacterial outer membrane and periplasm, providing a large exit duct for protein export and multidrug efflux when recruited by substrate-engaged inner membrane...

Hemolysin Production as a Virulence Marker in Symptomatic and Asymptomatic Urinary Tract Infections Caused by Escherichia coli

Hughes, Colin, Hacker, Jörg, Roberts, Anthony, Goebel, Werner

Potential virulence, as defined by combined levels of adhesion to urinary epithelial cells, serum resistance, and mouse toxicity, was assessed for Escherichia coli strains causing symptomatic and...

Docking of cytosolic chaperone-substrate complexes at the membrane ATPase during flagellar type III protein export

Thomas, Joanne, Stafford, Graham P., Hughes, Colin

Bacterial type III protein export underlies flagellum assembly and delivery of virulence factors into eukaryotic cells. The sequence of protein interactions underlying the export pathway are poorly...

Plasmid Carriage and the Serum Sensitivity of Enterobacteria

Taylor, Peter W., Hughes, Colin

The carriage of a range of plasmids by rough, serum-sensitive laboratory strains of Escherichia coli made no difference to their reactivity in human serum as determined by two methods....

Structure of the periplasmic component of a bacterial drug efflux pump

Higgins, Matthew K., Bokma, Evert, Koronakis, Eva, Hughes, Colin, Koronakis, Vassilis

Multidrug resistance among Gram-negative bacteria is conferred by three-component membrane pumps that expel diverse antibiotics from the cell. These efflux pumps consist of an inner membrane...

Chunnel vision: Export and efflux through bacterial channel-tunnels

Andersen, Christian, Hughes, Colin, Koronakis, Vassilis

The Escherichia coli TolC protein is central to toxin export and drug efflux across the inner and outer cell membranes and the intervening periplasmic space. The crystal structure has revealed that...

A Novel Membrane Protein Influencing Cell Shape and Multicellular Swarming of Proteus mirabilis

Hay, Nicole A., Tipper, Donald J., Gygi, Daniel, Hughes, Colin

Swarming in Proteus mirabilis is characterized by the coordinated surface migration of multicellular rafts of highly elongated, hyperflagellated swarm cells. We describe a transposon mutant, MNS185,...

Rapid Turnover of FlhD and FlhC, the Flagellar Regulon Transcriptional Activator Proteins, during Proteus Swarming

Claret, Laurent, Hughes, Colin

The enterobacterial flhDC master operon activates expression of the flagellar biogenesis gene hierarchy and also represses cell division. During Proteus mirabilis differentiation into elongated...

Membrane Interaction of Escherichia coli Hemolysin: Flotation and Insertion-Dependent Labeling by Phospholipid Vesicles

Hyland, Caroline, Vuillard, Laurent, Hughes, Colin, Koronakis, Vassilis

The 1,024-amino-acid acylated hemolysin of Escherichia coli subverts host cell functions and causes cell lysis. Both activities require insertion of the toxin into target mammalian cell membranes. To...

Acylation of Escherichia coli Hemolysin: A Unique Protein Lipidation Mechanism Underlying Toxin Function

Stanley, Peter, Koronakis, Vassilis, Hughes, Colin

The pore-forming hemolysin (HlyA) of Escherichia coli represents a unique class of bacterial toxins that require a posttranslational modification for activity. The inactive protoxin pro-HlyA is...

Transition to the open state of the TolC periplasmic tunnel entrance

Andersen, Christian, Koronakis, Eva, Bokma, Evert, Eswaran, Jeyanthy, Humphreys, Daniel, Hughes, Colin, ...

The TolC channel-tunnel spans the bacterial outer membrane and periplasm, providing a large exit duct for protein export and multidrug efflux when recruited by substrate-engaged inner membrane...

Hemolysin Production as a Virulence Marker in Symptomatic and Asymptomatic Urinary Tract Infections Caused by Escherichia coli

Hughes, Colin, Hacker, Jörg, Roberts, Anthony, Goebel, Werner

Potential virulence, as defined by combined levels of adhesion to urinary epithelial cells, serum resistance, and mouse toxicity, was assessed for Escherichia coli strains causing symptomatic and...

Docking of cytosolic chaperone-substrate complexes at the membrane ATPase during flagellar type III protein export

Thomas, Joanne, Stafford, Graham P., Hughes, Colin

Bacterial type III protein export underlies flagellum assembly and delivery of virulence factors into eukaryotic cells. The sequence of protein interactions underlying the export pathway are poorly...

Plasmid Carriage and the Serum Sensitivity of Enterobacteria

Taylor, Peter W., Hughes, Colin

The carriage of a range of plasmids by rough, serum-sensitive laboratory strains of Escherichia coli made no difference to their reactivity in human serum as determined by two methods....

Structure of the periplasmic component of a bacterial drug efflux pump

Higgins, Matthew K., Bokma, Evert, Koronakis, Eva, Hughes, Colin, Koronakis, Vassilis

Multidrug resistance among Gram-negative bacteria is conferred by three-component membrane pumps that expel diverse antibiotics from the cell. These efflux pumps consist of an inner membrane...

Chunnel vision: Export and efflux through bacterial channel-tunnels

Andersen, Christian, Hughes, Colin, Koronakis, Vassilis

The Escherichia coli TolC protein is central to toxin export and drug efflux across the inner and outer cell membranes and the intervening periplasmic space. The crystal structure has revealed that...

Island radiation on a continental scale: Exceptional rates of plant diversification after uplift of the Andes

Hughes, Colin, Eastwood, Ruth

Species radiations provide unique insights into evolutionary processes underlying species diversification and patterns of biodiversity. To compare plant diversification over a similar time period to...

An escort mechanism for cycling of export chaperones during flagellum assembly

Evans, Lewis D. B., Stafford, Graham P., Ahmed, Sangita, Fraser, Gillian M., Hughes, Colin

Assembly of the bacterial flagellar filament requires a type III export pathway for ordered delivery of structural subunits from the cytosol to the cell surface. This is facilitated by transient...

A periplasmic coiled-coil interface underlying TolC recruitment and the assembly of bacterial drug efflux pumps

Lobedanz, Sune, Bokma, Evert, Symmons, Martyn F., Koronakis, Eva, Hughes, Colin, Koronakis, Vassilis

Bacteria such as Escherichia coli and Pseudomonas aeruginosa expel antibiotics and other inhibitors via tripartite multidrug efflux pumps spanning the inner and outer membranes and the intervening...

The assembled structure of a complete tripartite bacterial multidrug efflux pump

Symmons, Martyn F., Bokma, Evert, Koronakis, Eva, Hughes, Colin, Koronakis, Vassilis

Bacteria like Escherichia coli and Pseudomonas aeruginosa expel drugs via tripartite multidrug efflux pumps spanning both inner and outer membranes and the intervening periplasm. In these pumps a...