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Dr Jodie Margaret Johnston

Contact

Department: School of Physical & Chemical Sciences

Email: jodie.johnston@canterbury.ac.nz

Direct Dial: +64 3 3693044

Office: Puaka James High - Room 522

Language: English

About
Research / Creative works
Networks
Methods & Equipment

Fields of Research

  • Structural Biology
  • Protein Chemistry
  • Menaquinone Biosynthesis
  • X-ray Crystallography
  • Bacterial Proteins
  • Inhibitor Design and Screening
  • Biochemistry
  • Bacterial Pathogensis
  • Anti-Microbial Resistance
  • Bioengineering (Protein Engineering)

Researcher Summary

My research interests are related to studying the structure and function of proteins, the aim being to obtain a better understanding of key biological questions at level of atoms and molecules.

My research interests encompass the following areas:

-Understanding proteins from microbial pathogens, especially those involved in essential metabolic pathways or otherwise important for pathogenicity, bacterial survival and anti-microbial resistance (e.g. proteins from the TB-causing bacteria M.tuberculosis (M.tb) and the opportunistic pathogen S. aureus).

The aim being to understand not only the role of these proteins in the bacteria and disease, but also uses structural information to design inhibitors that could become future drugs to treat microbial
diseases.

-Understanding the molecular basis and communication networks behind protein cooperativty and allostery

-Bio-engineering proteins to act as tools in a range of applications

Subject Area: Disciplines

  • Chemistry: Bioorganic Chemistry; Catalysis; Crystallography; Enzymology; Organic Chemistry
  • Biology: Molecular, Cellular and Whole Organism Biology: Biochemistry; Biomolecular Interactions; Microbiology; Molecular Biology
  • jodie_johnston.jpg

Research/Scholarly/Creative Works

(Displaying research/scholarly/creative work from 2013 to 2023)
Journal Articles
  • Stanborough T., Ho NAT., Bulloch EMM., Bashiri G., Dawes SS., Akazong EW., Titterington J., Allison TM., Jiao W. and Johnston JM. (2023) Allosteric inhibition of Staphylococcus aureus MenD by 1,4-dihydroxy naphthoic acid: a feedback inhibition mechanism of the menaquinone biosynthesis pathway. Philosophical Transactions of the Royal Society B: Biological Sciences 378(1871) http://dx.doi.org/10.1098/rstb.2022.0035.
  • Given FM., Moran F., Johns AS., Titterington JA., Allison TM., Crittenden DL., Johnston JM. and Tsai FT. (2022) The structure of His-tagged Geobacillus stearothermophilus purine nucleoside phosphorylase reveals a `spanner in the works'. Acta crystallographica. Section F, Structural biology communications 78: 416-422. http://dx.doi.org/10.1107/S2053230X22011025.
  • Amoozadeh S., Johnston J. and Meisrimler CN. (2021) Exploiting structural modelling tools to explore host-translocated effector proteins. International Journal of Molecular Sciences 22(23) http://dx.doi.org/10.3390/ijms222312962.
  • Ehrhardt MKG., Gerth ML. and Johnston JM. (2021) Structure of a double CACHE chemoreceptor ligand-binding domain from Pseudomonas syringae provides insights into the basis of proline recognition. Biochemical and Biophysical Research Communications 549: 194-199. http://dx.doi.org/10.1016/j.bbrc.2021.02.090.
  • Bashiri G., Nigon LV., Jirgis ENM., Ho NAT., Stanborough T., Dawes SS., Baker EN., Bulloch EMM. and Johnston JM. (2020) Allosteric regulation of menaquinone (Vitamin K2) biosynthesis in the human pathogen Mycobacterium tuberculosis. Journal of Biological Chemistry 295(12): 3759-3770. http://dx.doi.org/10.1074/jbc.RA119.012158.
  • Johnston JM. and Bulloch EM. (2020) Advances in menaquinone biosynthesis: sublocalisation and allosteric regulation. Current Opinion in Structural Biology 65: 33-41. http://dx.doi.org/10.1016/j.sbi.2020.05.005.
  • Gerth ML., Liu Y., Jiao W., Zhang XX., Baker EN., Lott JS., Rainey PB. and Johnston JM. (2017) Crystal structure of a bicupin protein HutD involved in histidine utilization in Pseudomonas. Proteins: Structure, Function and Bioinformatics 85(8): 1580-1588. http://dx.doi.org/10.1002/prot.25303.
  • Jirgis ENM., Bashiri G., Bulloch EMM., Johnston JM. and Baker EN. (2016) Structural Views along the Mycobacterium tuberculosis MenD Reaction Pathway Illuminate Key Aspects of Thiamin Diphosphate-Dependent Enzyme Mechanisms. Structure 24(7): 1167-1177. http://dx.doi.org/10.1016/j.str.2016.04.018.
  • Jung J., Bashiri G., Johnston JM. and Baker EN. (2016) Mass spectral determination of phosphopantetheinylation specificity for carrier proteins in Mycobacterium tuberculosis. FEBS Open Bio 6(12): 1220-1226. http://dx.doi.org/10.1002/2211-5463.12140.
  • Bashiri G., Johnston JM., Evans GL., Bulloch EMM., Goldstone DC., Jirgis ENM., Kleinboelting S., Castell A., Ramsay RJ. and Manos-Turvey A. (2015) Structure and inhibition of subunit I of the anthranilate synthase complex of Mycobacterium tuberculosis and expression of the active complex. Acta Crystallographica Section D Biological Crystallography 71(11): 2297-2308. http://dx.doi.org/10.1107/S1399004715017216.
  • Chai A-F., Bulloch EMM., Evans GL., Lott JS., Baker EN. and Johnston JM. (2015) A covalent adduct of MbtN, an acyl-ACP dehydrogenase from Mycobacterium tuberculosis , reveals an unusual acyl-binding pocket. Acta Crystallographica Section D Biological Crystallography 71(4): 862-872. http://dx.doi.org/10.1107/S1399004715001650.
  • Jung J., Bashiri G., Johnston JM., Brown AS., Ackerley DF. and Baker EN. (2014) Crystal structure of the essential Mycobacterium tuberculosis phosphopantetheinyl transferase PptT, solved as a fusion protein with maltose binding protein. Journal of Structural Biology 188(3): 274-278. http://dx.doi.org/10.1016/j.jsb.2014.10.004.
  • Chai A-F., Johnston JM., Bunker RD., Bulloch EMM., Evans GL., Lott JS. and Baker EN. (2013) Purification, crystallization and preliminary X-ray studies of MbtN (Rv1346) from Mycobacterium tuberculosis. Acta Crystallographica Section F Structural Biology and Crystallization Communications 69(12): 1354-1356. http://dx.doi.org/10.1107/S1744309113027000.
  • Johnston JM., Jiang M., Guo Z. and Baker EN. (2013) Crystal Structures of E. coli Native MenH and Two Active Site Mutants. PLoS ONE 8(4) e61325: 13. http://dx.doi.org/10.1371/journal.pone.0061325.
Other
  • Johnston JM., Bashiri G. and Kostic M. (2016) How structures help us visualize complex enzyme cycles. Crosstalk - Cellpress Community Blog. http://crosstalk.cell.com/blog/how-structures-help Cellpress. [Online - Interview. Crosstalk - Cellpress Community Blog.].

Affiliations

  • Affiliate Investigator, Maurice Wilkins Centre for Molecular Biodiscovery (Teaching/Research Organisation): Associate Invesigtator
  • Biomolecular Interaction Centre (Teaching/Research Organisation): Associate Investigator
  • New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) (Professional Organisation): Member
  • Society of Crystallographers in Australia and New Zealand (SCANZ) (Professional Organisation): Member

Key Methodologies

  • Molecular Biology
  • Protein Expression and Purification
  • X-ray Crystallography
  • Protein Biophysical Characterisation and Analaysis
  • Protein Functional Analysis
  • Protein Engineering
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