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Corinne Smith Lab - Structure and mechanism of molecular assemblies


Want to do a PhD in my group? See below for details


Apply to the MIBTP PhD Programme or the MRC DTP in Interdisciplinary Biomedical Reseach for PhD projects on the structural biology of clathrin-mediated endocytosis

PhD Project Description
High resolution cryo-electron microscopy of clathrin cage networks

In this project you will use high resolution 3D cryo-electron microscopy to visualise adaptor proteins binding to clathrin cages and biophysical approaches such as dynamic light scattering, time-resolved fluorescence anisotropy and isothermal titrating calorimetry to investigate how clathrin-adaptor interactions result in formation of a functional coated vesicle network. You will have access to the new Gatan K2 Summit direct detector and Jeol 2200FS 200kV transmission electron microscope provided by the Advanced Bioimaging Research Technology Platform and excellent facilities for biophysical analysis available within Warwick School of Life Sciences. This is a fabulous opportunity to apply cutting edge techniques to discovering how clathrin and its adaptor proteins drive clathrin mediated endocytosis.

Want to know more? Send me an e-mail on corinne dot smith at warwick dot ac dot uk to discuss your research interests

Why are we interested in clathrin-mediated endocytosis?

Clathrin-mediated endocytosis is a fascinating mechanical phenomenon which drives the selective internalisation of molecules into cells. It requires accurate and timely assembly of a clathrin lattice and coordination with a network of more than 20 adaptor proteins to form a coated vesicle which will be able to select molecules from the outside of the cell for delivery to specific destinations.This mechanism acts at many levels within eukaryotic organisms because it supports diverse functions such as nutrient uptake, synaptic vesicle recycling, signalling, determination of cell polarity and development. It is also exploited by viral and bacterial pathogens to gain entry into cells and malfunctions lead to tumour formation, neurodegeneration and heart disease.

We are using high resolution 3D cryo-electron microscopy and dynamic biophysical techniques to understand how the proteins involved in the network of clathrin and its adaptor proteins interact to achieve coated vesicle formation. The superior signal sensitivity of new direct electron detectors has revolutionised the field of structure determination by cryo-electron microscopy, allowing sub-4Å structures of challenging targets such as membrane proteins and ribosomes to be obtained without using X-ray crystallography. We are exploiting this improvement in capability to carry out high resolution structural analysis of clathrin cage complexes.

To find out more about our cryo-electron microscopy facilities visit Advanced Bioimaging Research Technology Platform

 

Group Members:

Dr Sarah Smith

Imaging Facility Manager
Ian Hands-Portman

Current PhD students
Joe Jones

Michael Baker

Erick Ratamero

Mary Halebian

Alumni

Dr Kyle Morris


Dr Alice Rothnie has now become a lecturer at Aston University

Dr Anna Young

Dr Sarah Batson

Dr Daniel Beck

Funding Sources
BBSRC
MRC
Wellcome Trust