Structural insights into the function of Elongator.

Structural insights into the function of Elongator.
Cell Mol Life Sci. 2018 Jan 13;:
Authors: Dalwadi U, Yip CK
Abstract
Conserved from yeast to humans, Elongator is a protein complex implicated in multiple processes including transcription regulation, α-tubulin acetylation, and tRNA modification, and its defects have been shown to cause human diseases such as familial dysautonomia. Elongator consists of two copies of six core subunits (Elp1, Elp2, Elp3, Elp4, Elp5, and Elp6) that are organized into two subcomplexes: Elp1/2/3 and Elp4/5/6 and form a stable assembly of ~ 850 kDa in size. Although the catalytic subunit of Elongator is Elp3, which contains a radical S-adenosyl-L-methionine (SAM) domain and a putative histone acetyltransferase domain, the Elp4/5/6 subcomplex also possesses ATP-modulated tRNA binding activity. How at the molecular level, Elongator performs its multiple functions and how the different subunits regulate Elongator's activities remains poorly understood. Here, we provide an overview of the proposed functions of Elongator and describe how recent structural studies provide new insights into the mechanism of action of this multifunctional complex.
PMID: 29332244 [PubMed - as supplied by publisher]

Source: Cellular and Molecular Life Sciences : CMLS - January 13, 2018 Category: Cytology Authors: Dalwadi U, Yip CK Tags: Cell Mol Life Sci Source Type: research