Structural Chemistry
Eskitis Institute for Cell & Molecular Therapies
Research: Hofmann Lab
Update: 15.06.2010
Our research focuses on the structure-function relationships of proteins involved in health and disease. The current projects comprise proteins involved in infection, inflammation, neurodegeneration, cell development and cell growth. Cytoskeletal proteins and proteins residing at membrane sites are of special interest to our group.
The central aspect of all projects is the three-dimensional structure of proteins and their complexes, which forms the basis to understand mechanisms on the molecular level.
In order to correlate structural information with molecular function, we use a range of techniques spanning from structural (X-ray crystallography, X-ray scattering, X-ray/neutron reflectometry, molecular modelling) to biophysical methods (circular dichroism, fluorescence spectroscopy, hydrodynamic methods, calorimetry). Molecular biology, as well as preparative and analytical biochemistry, play a key role in all projects to ensure the production of recombinant protein material.
Our group maintains a network of productive collaborations on a variety of projects as well as specialist techniques.
Please find here a list of publications, awards, and a summary of recent results.
Annexins
European Annexin Homepage

Annexin Structure-Function:
* Allostery as a common annexin feature (Review)
* From Structure to Function (Review)
* Annexin-Benzodiazepine Interactions

Annexin-Membrane Interactions:
* Membrane-bound annexin A1 N-terminal peptides
* Liposomes in assessment of annexin-membrane interactions (Review)
* The Annexin A3-Membrane Interaction is Modulated by an N-Terminal Tryptophan
* Voltage-Dependent Binding of Annexins to Membranes

Plant Annexins:
* Zea mays annexins modulate cytosolic free calcium
* Calcium-bound structure of cotton annexin Gh1 (PDB: 3brx)
* Structural determinants for plant annexin -membrane interactions
* Annexins in the plant kingdom: perspectives and potentials (Review)
* Annexin Gh1 from Gossypium hirsutum (PDB: 1n00)
* Plant annexins form calcium-independent oligomers in solution
* Annexin 24 from Capsicum annuum (PDB: 1dk5)

Parasite Annexins:
* Biochemical characterisation of annexin B1 from Cysticercus cellulosae
* Parasite annexins - new molecules with potential for drug and vaccine development (Review)
Cyclic Nucleotide
Phosphodiesterases
Cyclic Nucleotide Phosphodiesterase from Arabidopsis thaliana:
* Semi-reduced (PDB: 1jh6) and Inhibitor-bound (PDB: 1jh7) Forms (Paper)
* Oxidised Form (PDB: 1fsi)

Biophysical characterisation of three Cyclic Nucleotide Phosphodiesterases
Cytoskeletal Proteins
Cyclase-associated protein (CAP):
* Crystallisation of cyclase-associated protein from D. discoideum
* The orthorhombic crystal structure of CAP (PDB: 1tjf)
* Mechanism of oligomerisation

Coronins:
* Coronin structure and implications (Review)
* Coronin 3 (CRN3) involvement in F-actin dependent processes at the cell cortex
* Novel coronin-1C (CRN2) isoforms
Drug Discovery and Design
S-glycosyl primary sulfonamides for selective inhibition of cancer-associated carbonic anhydrases (PDB: 3hkn, 3hkq, 3hkt, 3hku)
Electron Transfer and RedOx
Ferredoxin-NADP+ Reductase from Capsicum annuum (PDB: 1sm4)
S-nitrosylation of the A. thaliana salicylic acid binding protein 3
Java Applications
PCSB - Program Collection for Structural Biology and Biophysical Chemistry
* ACDP - a Java application for data processing and analysis of protein circular dichroism spectra
* Two new software applications for automated processing of circular dichroism and fluorescence data
* PCSB - a programme collection for structural biology and biophysical chemistry
Pheromones
(2S,4R,5S)-2,4-Dimethyl-5-hexanolide:
Trail Pheromone for different Camponotus Species
Prohibitins
Molecular modelling of prohibitin domains
Towards understanding the roles of prohibitins (Review)
Protein Engineering
Cyclised green fluorescent protein (PDB: 1kp5)
Proteins in
Infectious
Diseases
Group A streptococcal M protein: improved vaccine candidate
SCP/TAPS proteins of eukaryotes (Research Review)
Glc seven-like phosphatase (gsp) orthologue from Haemonchus contortus
Point mutations in Giardia triose-phosphate isomerase
Proteins in
Neurological
Diseases
Valosin-containing Protein (VCP)
Strumpellin is a novel VCP binding protein

Visinin-like Proteins (VILIPs):
* Structure, function and expression of VILIPs (Review)
* VILIP-1, a Novel Regulator of the Guanylate Cyclase Transduction System in Neurons (Review)
* Interactions of VILIPs with phospho-inositides
We gratefully acknowledge research funding by:
Australian Research Council, AU
Griffith University, Brisbane, QLD, AU
James N. Kirby Foundation James N. Kirby; James N. Kirby Foundation, Broadway, NSW, AU
National Health and Medical Research Council (NHMRC), AU
Rebecca L. Cooper Medical Research Foundation, Bondi, NSW, AU
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