Jingjin Fan

jingjin fan

Dr Jingjin Fan

Wellcome Trust Early Career Fellow

 

Research Interests

My research focuses on developing new approaches to visualise and understand biomolecular structures and dynamics that are difficult to capture using conventional structural methods. I integrate native mass spectrometry with cryogenic structural imaging, using native ion manipulation and electrospray ion beam deposition (ESIBD) to isolate defined molecular states and preserve them for high-resolution structural analysis.

A major focus of my current research is membrane proteins, whose functions are governed by dynamic conformational states, molecular interactions and flexible regulatory regions. By connecting state-resolved information from native mass spectrometry with cryo-EM, I aim to uncover structural and regulatory mechanisms that can be obscured by conformational heterogeneity or conventional sample-preparation workflows.

More broadly, I am interested in how biomolecular structure and function are maintained or altered across different physical environments. My long-term goal is to develop integrated molecular imaging and analytical technologies that bridge native mass spectrometry, cryogenic structural imaging and biomolecular interface engineering, enabling dynamic biomolecular systems to be interrogated from new physical and structural perspectives.

Biography

Dr Jingjin Fan is a Wellcome Trust Early Career Fellow in the Department of Chemistry and a Junior Research Fellow at Wolfson College, University of Oxford. Jingjin obtained her PhD in Precision Instruments from Tsinghua University in 2023 under the supervision of Professors Xiaoyu Zhou and Zheng Ouyang. During her PhD, she developed an electrospray-based approach to cryo-EM sample preparation, scientifically validated in Nature Methods. The patented technology was subsequently commercialised as the ESI CryoStar system by Shuimu Biosciences. In 2023, Jingjin joined Oxford to work with Professors Stephan Rauschenbach and Carol V. Robinson. As a Marie Skłodowska-Curie Postdoctoral Fellow, she developed new ways to integrate native mass spectrometry with cryo-electron microscopy using electrospray ion beam deposition (ESIBD)-based soft-landing approaches, enabling structural analysis of membrane proteins at sub-3 Å resolution while preserving flexible and intrinsically disordered regions. Building on these advances, Jingjin was awarded a five-year Wellcome Trust Early Career Award in 2026, marking the start of her independent research programme investigating regulatory mechanisms in human membrane proteins.

Publications