Team

We are recruiting!

Open positions are available for graduate students, postdoctoral fellows, and technicians.

Successful candidates should be great team players who enjoy working with a dynamic, interactive, and collegial group of scientists. Research experience in any of the areas of microscopy instrumentation, solution biomolecular NMR, or molecular biology is strongly preferred, but not required. Applicants with a strong desire to learn new techniques will find abundant opportunities to broaden their research expertise through training and collaborations within and beyond the group.

For prospective graduate students, please apply to the Biochemistry, Cellular, and Molecular Biology (BCMB) Graduate Program at UTMB Graduate School of Biomedical Sciences at Galveston. For admitted graduate students interested in a research rotation project in our group, please email Xun (xunsun[at]utmb.edu).

For prospective postdoctoral fellows and technicians, please send your CV and contact information for three references to Xun by email.

Principal Investigator

Xun Sun

Assistant Professor in the Department of Biochemistry and Molecular Biology at UTMB

Membership in the Sealy Center for Structural Biology and Molecular Biophysics

CPRIT Scholar in Cancer Research

I performed my postdoctoral research under the mentorship of Prof. Peter Wright and Prof. Jane Dyson at the Scripps Research Institute. My postdoctoral research focused on probing the aggregation pathway of human transthyretin using solution NMR and computational modeling.

In my Ph.D. work, I studied enzymatic mechanisms of non-ribosomal peptide synthetases using single-molecule FRET under the guidance of Prof. Haw Yang at Princeton University.

Postdoctoral Fellows

Tapas Haldar

I’ve been a group member since September 2025. Before UTMB, I studied ligand-binding dynamics in CNG ion channels using single-molecule fluorescence with ZMWs and micromirror TIRF in cell-derived nanovesicles at UT Austin.

Previously, at Emory University, I investigated protein folding and peptide–membrane interactions using laser-initiated T-jump IR and fluorescence spectroscopies.

I completed my Ph.D. in Physical Chemistry at CSIR–National Chemical Laboratory (Pune, India), where I used vibrational and electronic Stark effect spectroscopy to probe electrostatics and hydrogen bonding.

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