Welcome to 泛素堂

The Yao and Cohen Labs work closely together on various aspects of ubiquitin biology. Each lab focuses on specific areas such as...


What we are working on...

Histone ubiquitylation

Chromatin Remodeling

Ubiquitin sensors

About Ubiquitin


Ubiquitin is a small protein of 76 amino acid. It is highly conserved among all eukaryotes. It is also the founding member of a large number of ubiquitin-like proteins that have been found across all three domains of life.

Visit our Research page to learn more about this fascinating protein and its involvement in diverse biological processes.


We are from all over the world...
Tingting Yao
I grew up in Wuhan, China and came to Iowa, where I was introduced to the corn fields and the ubiquitin-proteasome world.
Robert E. Cohen
Yun-Seok Choi, Ph.D
Research Scientist
Francesco Scavone
Graduate Student
Sarah Bollinger
Graduate Student
Aixin Song, Ph.D
Research Scientist
Luisa Gomez
Graduate Student
Carolina Santos
Sharon Lian
BS/MS student
Logan McCoy
Zachary Hazlett
Graduate Student
Handsome and spoiled, Hobbes is an English cream Golden Retriever. His name comes from our favorite comic “Calvin and Hobbes”.

Affiliated Groups

We are affiliated with these Graduate Programs...
Department of Biochemistry and Molecular Biology

Chemical Biology Program

Cell and Molecular Biology Program

Latest News

What we are excited about...

We are located at the foothills of the beautiful Rocky Mountains.