Two zinc finger proteins with functions in m⁶A writing interact with HAKAI.

ABSTRACT: The methyltransferase complex (m⁶A writer), which catalyzes the deposition of N⁶-methyladenosine (m⁶A) in mRNAs, is highly conserved across most eukaryotic organisms, but its components and interactions between them are still far from fully understood. Here, using in vivo interaction proteomics, two HAKAI-interacting zinc finger proteins, HIZ1 and HIZ2, are discovered as components of the Arabidopsis m⁶A writer complex. HAKAI is required for the interaction between HIZ1 and MTA (mRNA adenosine methylase A). Whilst HIZ1 knockout plants have normal levels of m⁶A, plants in which it is overexpressed show reduced methylation and decreased lateral root formation. Mutant plants lacking HIZ2 are viable but have an 85% reduction in m⁶

SUBMITTER: Zhang M 

PROVIDER: S-EPMC8891334 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature