Current Members

Harrison (Harry) Greenberg

5th Year Graduate Student, CBI Program

[email protected]

Hometown: Wilmington, DE

M.S. in Chemical Biology: Johns Hopkins University, 2020

B.S. in Biochemistry: University of Delaware, 2017

Fun fact: I can start a friction fire in under 6 seconds (bow drill)!

Harry is studying the reversible chemistry of quinone methides. He is examining the interactions between molecular machines and reversibly cross-linked DNA.


Daniel Lemen

5th Year Graduate Student, Chemistry Department

[email protected]

Hometown: Frederick, MD

M.A. in Chemistry: Johns Hopkins University, 2020

B.A. in Biochemistry: Messiah University, 2018

B.A. in Spanish: Messiah University, 2018

Daniel is studying whether substrate structure is able to alter the redox chemistry of iodotyrosine deiodinase (IYD). He is also working to elucidate IYD’s mechanism of catalysis by synthesizing substrate analogues.


Ravina Moirangthem

5th Year Graduate Student, Chemistry Department

[email protected]

M.A. in Chemistry: Johns Hopkins University, 2020


Bing Xu

5th Year Graduate Student, Chemistry Department

[email protected]

M.A. in Chemistry: Johns Hopkins University, 2020


Manusha Gamage

4th Year Graduate Student, Chemistry Department

[email protected]

M.A. in Chemistry: Johns Hopkins University, 2021


Stella Matutina Ikuzwe

3rd Year Graduate Student, Chemistry Department

[email protected]

Hometown: Kigali, Rwanda

M.A. in Chemistry: Johns Hopkins University, 2022

B.A. in Chemistry with Biochemistry Emphasis: Macalester College, 2020

Stella is studying the role of iodotyrosine deiodinase (IYD) in other invertebrates to see if there is also a correlation between dehalogenation and fertility as the one found in drosophila.


Ekroop Cheema

3rd Year Graduate Student, Chemistry Department

[email protected]

Hometown: Rajpura, Punjab, India

M.A. in Chemistry: Johns Hopkins University, 2022

M.S. in Chemistry: Indian Institute of Technology, Kharagpur

B.S. in Chemistry: Indian Institute of Technology, Kharagpur

Ekroop is studying how cofactor replacement can manipulate the enzymatic activity of Iodotyrosine Deiodinase (IYD).


Crystal (Yu-Ju) Peng

2nd Year Graduate Student, Chemistry Department

[email protected]

Hometown: Hsinchu, Taiwan

M.S. in Chemistry: National Taiwan University, 2020

B.S. in Chemistry: National Taiwan University, 2018

Crystal is studying azoreductase-sensitive prodrugs. She is currently working on the designs that generate aza-quinone methides (aQMs) as a warhead to target biomolecules in the presence of azoreductase.