PMID: 30511675

Authors:

Gupta AK, Behera D, Gopal B

Title:

The crystal structure of Mycobacterium tuberculosis high-temperature requirement A protein reveals an autoregulatory mechanism.

Journal:

Acta Crystallogr F Struct Biol Commun. 2018 Dec 1;74(Pt 12):803-809. doi:, 10.1107/S2053230X18016217. Epub 2018 Nov 29.

Abstract:

The crystal structure of Mycobacterium tuberculosis high-temperature requirement A (HtrA) protein was determined at 1.83 A resolution. This membrane-associated protease is essential for the survival of M. tuberculosis. The crystal structure reveals that interactions between the PDZ domain and the catalytic domain in HtrA lead to an inactive conformation. This finding is consistent with its proposed role as a regulatory protease that is conditionally activated upon appropriate environmental triggers. The structure provides a basis for directed studies to evaluate the role of this essential protein and the regulatory pathways that are influenced by this protease.