Eukaryotic translation initiation factor 3 subunit H

Definition:

Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis. The eIF-3 complex associates with the 40S ribosome and facilitates the recruitment of eIF-1, eIF-1A, eIF-2:GTP:methionyl-tRNAi and eIF-5 to form the 43S pre-initiation complex (43S PIC). The eIF-3 complex stimulates mRNA recruitment to the 43S PIC and scanning of the mRNA for AUG recognition. The eIF-3 complex is also required for disassembly and recycling of post-termination ribosomal complexes and subsequently prevents premature joining of the 40S and 60S ribosomal subunits prior to initiation. The eIF-3 complex specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation, including cell cycling, differentiation and apoptosis, and uses different modes of RNA stem-loop binding to exert either translational activation or repression.

References:

[1]. Mamiko Masutani, et al. Reconstitution reveals the functional core of mammalian eIF3. EMBO J. 2007 Jul 25;26(14):3373-83. [Content Brief]

[2]. Amy S Lee, et al. eIF3d is an mRNA cap-binding protein that is required for specialized translation initiation. Nature. 2016 Aug 4;536(7614):96-9. [Content Brief]

[3]. Amy S Y Lee, et al. eIF3 targets cell-proliferation messenger RNAs for translational activation or repression. Nature. 2015 Jun 4;522(7554):111-4. [Content Brief]

Biomedical Dictionary

The Biomedical Dictionary is a comprehensive and professional collection of biological academic terms and subject datas. All explanations are supported by authoritative books or high impact factor literatures, and you can acquire accurate explanations of the biomedical terms you want to know.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Name
Email *

	Sorry, but the email address you supplied was invalid.