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Dr Gary Sharples' Outputs (18)

The antibacterial activity of a photoactivatable diarylacetylene against Gram-positive bacteria (2023)
Journal Article
Waite, R., Adams, C. T., Chisholm, D. R., Sims, C. H. C., Hughes, J. G., Dias, E., …Ambler, C. A. (2023). The antibacterial activity of a photoactivatable diarylacetylene against Gram-positive bacteria. Frontiers in Microbiology, 14, Article 1243818. https://doi.org/10.3389/fmicb.2023.1243818

The emergence of antibiotic resistance is a growing threat to human health, and therefore, alternatives to existing compounds are urgently needed. In this context, a novel fluorescent photoactivatable diarylacetylene has been identified and character... Read More about The antibacterial activity of a photoactivatable diarylacetylene against Gram-positive bacteria.

Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc (2021)
Journal Article
Paterson, J. R., Beecroft, M. S., Mulla, R. S., Osman, D., Reeder, N. L., Caserta, J. A., Young, T. R., Pettigrew, C. A., Davies, G. E., Williams, J. G., & Sharples, G. J. (2022). Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc. Applied and Environmental Microbiology, 88(2), Article e01641-21. https://doi.org/10.1128/aem.01641-21

Bacterial growth and proliferation can be restricted by limiting the availability of metal ions in their environment. Humans sequester iron, manganese and zinc to help prevent infection by pathogens, a system termed nutritional immunity. Commercially... Read More about Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc.

Nature‐Inspired Substrate‐Independent Omniphobic and Antimicrobial Slippery Surfaces (2021)
Journal Article
Cox, H. J., Gibson, C. P., Sharples, G. J., & Badyal, J. P. S. (2022). Nature‐Inspired Substrate‐Independent Omniphobic and Antimicrobial Slippery Surfaces. Advanced Engineering Materials, 24(6), Article 2101288. https://doi.org/10.1002/adem.202101288

Inspired by the carnivorous Nepenthes pitcher plant, a range of highly liquid repellent lubricant-infused surfaces has been devised (low water droplet contact angle hysteresis and sliding angle values). This entails matching functional pulsed plasma... Read More about Nature‐Inspired Substrate‐Independent Omniphobic and Antimicrobial Slippery Surfaces.

Tea–Essential Oil–Metal Hybrid Nanocoatings for Bacterial and Viral Inactivation (2021)
Journal Article
Cox, H. J., Sharples, G. J., & Badyal, J. P. S. (2021). Tea–Essential Oil–Metal Hybrid Nanocoatings for Bacterial and Viral Inactivation. ACS Applied Nano Material, 4(11), 12619-12628. https://doi.org/10.1021/acsanm.1c03151

Natural plant-derived antimicrobial nanocoatings have been synthesized by mixing brewed tea with cinnamaldehyde oil. Concurrent addition of copper or silver salts produces hybrid tea–cinnamaldehyde–copper or tea–cinnamaldehyde–silver nanocoatings, re... Read More about Tea–Essential Oil–Metal Hybrid Nanocoatings for Bacterial and Viral Inactivation.

Bioinspired and eco-friendly high efficacy cinnamaldehyde antibacterial surfaces (2021)
Journal Article
Cox, H. J., Li, J., Saini, P., Paterson, J. R., Sharples, G. J., & Badyal, J. P. S. (2021). Bioinspired and eco-friendly high efficacy cinnamaldehyde antibacterial surfaces. Journal of Materials Chemistry B: Materials for biology and medicine, 9(12), 2918-2930. https://doi.org/10.1039/d0tb02379e

Antimicrobial essential oils are incorporated into mussel-inspired and natural plant polyphenol coatings as part of a single-step fabrication process. Polydopamine–cinnamaldehyde, polyethyleneimine–cinnamaldehyde, and tannic acid–cinnamaldehyde coati... Read More about Bioinspired and eco-friendly high efficacy cinnamaldehyde antibacterial surfaces.

A bacteriophage mimic of the bacterial nucleoid-associated protein Fis (2020)
Journal Article
Sharples, G. J., Heddle, J. G., Kozak, M., Taube, M., Hughes, T. R., Pålsson, L.-O., Bowers, L. Y., Curtis, F. A., Plewka, J., Świątek, S., Paterson, J. R., Jolma, A., Yang, A. W. H., Gittens, W. H., Trotter, A. J., Balakrishnan, D., & Chakraborti, S. (2020). A bacteriophage mimic of the bacterial nucleoid-associated protein Fis. Biochemical Journal, 477(7), 1345-1362. https://doi.org/10.1042/bcj20200146

We report the identification and characterization of a bacteriophage λ-encoded protein, NinH. Sequence homology suggests similarity between NinH and Fis, a bacterial nucleoid-associated protein involved in numerous DNA topology manipulations, includi... Read More about A bacteriophage mimic of the bacterial nucleoid-associated protein Fis.

Bioinspired Multifunctional Polymer–Nanoparticle–Surfactant Complex Nanocomposite Surfaces for Antibacterial Oil–Water Separation (2018)
Journal Article
Ritchie, A., Cox, H., Barrientos-Palomo, S., Sharples, G., & Badyal, J. (2019). Bioinspired Multifunctional Polymer–Nanoparticle–Surfactant Complex Nanocomposite Surfaces for Antibacterial Oil–Water Separation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 560, 352-359. https://doi.org/10.1016/j.colsurfa.2018.10.030

Bioinspired polymer–nanoparticle–fluorosurfactant complex composite coatings are shown to display fast-switching oleophobic–hydrophilic properties. The large switching parameters (difference between the equilibrium oil and water static contact angles... Read More about Bioinspired Multifunctional Polymer–Nanoparticle–Surfactant Complex Nanocomposite Surfaces for Antibacterial Oil–Water Separation.

On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity (2018)
Journal Article
Mulla, R. S., Beecroft, M. S., Pal, R., Aguilar, J., Pitarch-Jarque, J., García‐España, E., Lurie-Luke, E., Sharples, G., & Williams, J. (2018). On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity. Chemistry - A European Journal, 24(28), 7137-7148. https://doi.org/10.1002/chem.201800026

EDTA is widely used as an inhibitor of bacterial growth, affecting the uptake and control of metal ions by microorganisms. We describe the synthesis and characterisation of two symmetrical bis‐amide derivatives of EDTA, featuring glycyl or pyridyl su... Read More about On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity.

The intracellular immune receptor Rx1 regulates the DNA-binding activity of a Golden2-like transcription factor (2017)
Journal Article
Townsend, P., Dixon, C., Slootweg, E., Sukarta, O., Yang, A., Hughes, T., …Cann, M. (2018). The intracellular immune receptor Rx1 regulates the DNA-binding activity of a Golden2-like transcription factor. Journal of Biological Chemistry, 293(9), 3218-3233. https://doi.org/10.1074/jbc.ra117.000485

Plant NLR proteins enable the immune system to recognise and respond to pathogen attack. An early consequence of immune activation is transcriptional reprogramming and some NLRs have been shown to act in the nucleus and interact with transcription fa... Read More about The intracellular immune receptor Rx1 regulates the DNA-binding activity of a Golden2-like transcription factor.

Exploring the links between peptoid antibacterial activity and toxicity (2017)
Journal Article
Bolt, H. L., Eggimann, G. A., Jahoda, C. A., Zuckermann, R. N., Sharples, G. J., & Cobb, S. L. (2017). Exploring the links between peptoid antibacterial activity and toxicity. MedChemComm, 8(5), 886-896. https://doi.org/10.1039/c6md00648e

Peptoids are a promising class of antimicrobial agents with reported activities against a range of both Gram-positive and Gram-negative bacteria, fungi and most recently parasites. However, at present the available toxicty data is somewhat limited an... Read More about Exploring the links between peptoid antibacterial activity and toxicity.

Glycosylated nanoparticles as efficient antimicrobial delivery agents (2016)
Journal Article
Eissa, A., Abdulkarim, A., Sharples, G., & Cameron, N. (2016). Glycosylated nanoparticles as efficient antimicrobial delivery agents. Biomacromolecules, 17(8), 2672-2679. https://doi.org/10.1021/acs.biomac.6b00711

Synthetic polymer nanoparticles that can be tailored through multivalent ligand display on the surface, while at the same time allowing encapsulation of desired bioactive molecules, are especially useful in providing a versatile and robust platform i... Read More about Glycosylated nanoparticles as efficient antimicrobial delivery agents.

The tomato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor I-2 couples DNA-Binding to Nucleotide-Binding Domain Nucleotide Exchange (2015)
Journal Article
Fenyk, S., Dixon, C. H., Kittens, W. H., Townsend, P. D., Sharples, G. .., Pålsson, L. .-O., Takken, F. L. W., & Cann, M. J. (2016). The tomato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor I-2 couples DNA-Binding to Nucleotide-Binding Domain Nucleotide Exchange. Journal of Biological Chemistry, 291(3), 1137-1147. https://doi.org/10.1074/jbc.m115.698589

Plant nucleotide-binding leucine-rich repeat (NLR) proteins enable plants to recognise and respond to pathogen attack. Previously, we demonstrated that the Rx1 NLR of potato is able to bind and bend DNA in vitro. DNA binding in situ requires its genu... Read More about The tomato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor I-2 couples DNA-Binding to Nucleotide-Binding Domain Nucleotide Exchange.

Preparation of an antibacterial poly(ionic liquid) graft copolymer of hydroxyethyl cellulose (2015)
Journal Article
Joubert, F., Yeo, R. P., Sharples, G. J., Musa, O. M., Hodgson, D. R., & Cameron, N. R. (2015). Preparation of an antibacterial poly(ionic liquid) graft copolymer of hydroxyethyl cellulose. Biomacromolecules, 16(12), 397-3979. https://doi.org/10.1021/acs.biomac.5b01300

Poly(ionic liquid)s (P(IL)s) of different degrees of polymerisation (10, 50 and 100) were prepared via RAFT polymerisation using an alkyne-terminated xanthate as transfer agent, with a monomer conversion of up to ~80% and a ƉM of 1.5 for P(IL)100. Su... Read More about Preparation of an antibacterial poly(ionic liquid) graft copolymer of hydroxyethyl cellulose.

The Potato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor Rx1 is a Pathogen Dependent DNA-Deforming Protein (2015)
Journal Article
Fenyk, S., Townsend, P. D., Dixon, C. H., Spies, G. B., de San Eustaquio Campillo, A., Slootweg, E. J., …Cann, M. J. (2015). The Potato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor Rx1 is a Pathogen Dependent DNA-Deforming Protein. Journal of Biological Chemistry, 290(41), 24945-24960. https://doi.org/10.1074/jbc.m115.672121

Plant NLR proteins enable cells to respond to pathogen attack. Several NLRs act in the nucleus, however, conserved nuclear targets that support their role in immunity are unknown. Previously we noted a structural homology between the NB domain of NLR... Read More about The Potato Nucleotide-Binding Leucine-Rich Repeat (NLR) Immune Receptor Rx1 is a Pathogen Dependent DNA-Deforming Protein.

Preparation, properties, and antibacterial behavior of a novel cellulose derivative containing lactam groups (2014)
Journal Article
Joubert, F., Sharples, G. J., Musa, O. M., Hodgson, D. R., & Cameron, N. R. (2015). Preparation, properties, and antibacterial behavior of a novel cellulose derivative containing lactam groups. Journal of Polymer Science Part A: Polymer Chemistry, 53(1), 68-78. https://doi.org/10.1002/pola.27441

Lactam groups were introduced onto the backbone of hydroxyethyl cellulose (HEC) to modify properties, such as solubility in organic solvents and solution viscosity and to introduce possible antibacterial activity. Functionalization was achieved using... Read More about Preparation, properties, and antibacterial behavior of a novel cellulose derivative containing lactam groups.

Phage Orf family recombinases: conservation of activities and involvement of the central channel in DNA binding (2014)
Journal Article
Curtis, F., Malay, A., Trotter, A., Wilson, L., Barradell-Black, M., Bowers, L., …Sharples, G. (2014). Phage Orf family recombinases: conservation of activities and involvement of the central channel in DNA binding. PLoS ONE, 9(8), Article e102454. https://doi.org/10.1371/journal.pone.0102454

Genetic and biochemical evidence suggests that λ Orf is a recombination mediator, promoting nucleation of either bacterial RecA or phage Redβ recombinases onto single-stranded DNA (ssDNA) bound by SSB protein. We have identified a diverse family of O... Read More about Phage Orf family recombinases: conservation of activities and involvement of the central channel in DNA binding.

Electroless deposition of multi-functional zinc oxide surfaces displaying photoconductive, superhydrophobic, photowetting, and antibacterial properties (2012)
Journal Article
Wood, T., Hurst, G., Schofield, W., Thompson, R., Oswald, G., Evans, J., …Badyal, J. (2012). Electroless deposition of multi-functional zinc oxide surfaces displaying photoconductive, superhydrophobic, photowetting, and antibacterial properties. Journal of materials chemistry, 22(9), 3859-3867. https://doi.org/10.1039/c2jm14260k