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Heran Darwin

Heran Darwin, PhD

Professor, Department of Microbiology

Microbiology, Tuberculosis

My lab seeks to understand how Mycobacterium tuberculosis, the causative agent of tuberculosis, has become arguably the most successful pathogen on earth. M. tuberculosis naturally infects humans only, and one-third of the world’s population is infected by this bacillus.

Using genetics and biochemistry, my lab has characterized a protease complex called the proteasome, which is essential for M. tuberculosis to cause lethal infections in animal models. Proteasomes are a family of proteases that are conserved in all domains of life, from bacteria to humans. Over the years, we have identified proteins that function with the M. tuberculosis proteasome, several of which are unique to bacterial proteasome systems.

In addition to characterizing the mechanisms of proteasome-dependent degradation, we have identified pathways regulated by this sytem, many which are essential for the tubercle bacillus to persist in a mammalian host. We are currently employing genetics, proteomics, and metabolomics to understand these pathways.

Also of interest, over the years we have found that M. tuberculosis can harbor mutations that prevent the death of its host, yet the host’s immune system is unable to clear the infection. We are very interested in understanding how these bacilli remain in the host despite their inability to replicate robustly.



Academic office

430 East 29th Street

Lab 324, Room 312

New York, NY 10016

Lab Website
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PhD from University of California, Los Angeles

Fellowship, Weill Medical College of Cornell University, Bacterial Pathogenesis

Darwin, K Heran

EMBO reports. 2023 Oct 09; 24(10):e58022

Limón, Gina; Samhadaneh, Nora M; Pironti, Alejandro; Darwin, K Heran

MBio. 2023 Jun 23; e0036323

Darwin, K Heran; Aldridge, Bree; Seeliger, Jessica; Shen, Aimee; Stanley, Sarah

EMBO reports. 2023 Mar 06; e57041

Xiao, Xiansha; Feng, Xiang; Yoo, Jin Hee; Kovach, Amanda; Darwin, K Heran; Li, Huilin

mSphere. 2022 Oct 26; 7(5):e0027422

Darwin, K Heran

EMBO reports. 2022 Sep 14; e56047

Yoo, Jin Hee; Kahne, Shoshanna C; Darwin, K Heran

Journal of biological chemistry. 2022 Sep 10; 102478

Darwin, K Heran

EMBO reports. 2022 May 04; e55283

Darwin, K Heran; Stanley, Sarah A

Open biology. 2022 Apr; 12(4):220010