Hi, my name is

Kehui "Coffee" Xiang

I lead a research group at Zhejiang University studying how cells regulate gene expression after transcription. We combine high-throughput sequencing, RNA biochemistry, functional genomics, and machine learning to understand how mRNA poly(A) tails and translation are controlled in oocytes, early embryos, and human disease.

About Me

I’m an Assistant Professor and ZJU100 Investigator at Zhejiang University. Before starting my lab, I elucidated the structural basis of the pre-mRNA 3′-end processing machinery, defined the molecular mechanism underlying the coupling between poly(A)-tail length and translational efficiency, uncovered the dynamic regulation of mRNA poly(A)-tail length during vertebrate early development, and developed PAL-AI, a neural network model for predicting changes in poly(A)-tail length. My lab now asks three questions:

  1. What genetic variants disrupt post-transcriptional control in human reproductive disorders?
  2. What principles govern mRNA regulation during vertebrate early development?
  3. Can we build new technologies to measure translational control in mammalian cells?

We are looking for motivated students and postdocs — visit the lab website or email me.

Outside my work, I like building things, exploring nature, making videos, playing games, and watching movies.

Experience

Assistant Professor - Zhejiang University
Sep 2025 - present
Postdoctoral Associate/Fellow - Whitehead Institute
Feb 2014 - Sep 2025

I worked on multiple projects about post-transcriptional gene regulation.

  • Built a machine-learning model to predict poly(A) tail-length change during oocyte maturation (link)
  • Identified sequence elements and contextual features that control poly(A)-tail length and translation during frog and fish early development (link)
  • Unraveled molecular mechanisms of coupling between poly(A)-tail length and translational efficiency (link)
Research Assistant (Graduate student) - Columbia University
Sep 2007 - Jan 2014

I carried out structural and biochemical studies on transcription-coupled mRNA 3’-end processing.

  • Determined the crystal structure of the symplekin-Ssu72-CTD complex and found an unexpected conformation of the RNA polymerase II C-terminal domain (link)
  • Revealed the molecular details of Ssu72 functioning as a dual phosphatase targeting different sites of the same peptide substrate (link)
  • Solved the crystal structure of Rtr1, a Ser5 phosphatase of the RNA polymerase II C-terminal domain (link)
Research Assistant - Tsinghua University
June 2005 - June 2007
I helped determine the crystal structures of Nipah and Hendra virus fusion core proteins and develop novel drug-screening technologies based on traditional Chinese medicine.

Education

2003 - 2007
Bachelor of Fundamental Sciences (Mathematics & Physics)
Tsinghua University, Beijing, China

Projects

PAL-AI reveals genetic determinants that control poly(A)-tail length during oocyte maturation, with relevance to human fertility
Poly(A) tail Machine learning Oocytes Fertility mRNA Neural network
PAL-AI reveals genetic determinants that control poly(A)-tail length during oocyte maturation, with relevance to human fertility
Kehui Xiang, David P. Bartel
Control of poly(A)-tail length and translation in vertebrate oocytes and early embryos
Poly(A) tail Translational control Oocyte Embryo mRNA
Control of poly(A)-tail length and translation in vertebrate oocytes and early embryos
Kehui Xiang, Jimmy Ly, David P. Bartel
The molecular basis of coupling between poly (A)-tail length and translational efficiency
Poly(A) tail Translation Oocyte mRNA stability PABPC Mammalian cells
The molecular basis of coupling between poly (A)-tail length and translational efficiency
Kehui Xiang, David P. Bartel

Achievements

Margaret and Herman Sokol Postdoctoral Award
Whitehead Institute for Biomedical Research, 2023
CRI Irvington Postdoctoral Fellowship
Cancer Research Institute, USA, 2015
Peter Sajovic Memorial Prize for outstanding work in biology
Columbia University, USA, 2012
Chinese Government Award for outstanding self-financed students abroad
Consulate General of P.R. China, 2010
Faculty Fellow
Columbia University, USA, 2007
Huang Yicong Couple scholarship for outstanding students
Tsinghua University, China, 2006
First Prize scholarship for outstanding academic achievement
Tsinghua University, China, 2005

Get in Touch

If you have any questions or simply just want to say hi, please