Discovery of Dehydroamino Acid Residues in the Capsid and Matrix Structural Proteins of HIV-1.

ABSTRACT: Human immunodeficiency virus type 1 (HIV-1) remains a deadly infectious disease despite existing antiretroviral therapies. A comprehensive understanding of the specific mechanisms of viral infectivity remains elusive and currently limits the development of new and effective therapies. Through in-depth proteomic analysis of HIV-1 virions, we discovered the novel post-translational modification of highly conserved residues within the viral matrix and capsid proteins to the dehydroamino acids, dehydroalanine and dehydrobutyrine. We further confirmed their presence by labeling the reactive alkene, characteristic of dehydroamino acids, with glutathione via Michael addition. Dehydroamino acids are rare, understudied, and have been observed mainly in select bacterial and fungal species. Until now

SUBMITTER: Miller RM 

PROVIDER: S-EPMC8976760 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature