期刊
ANNUAL REVIEW OF BIOCHEMISTRY, VOL 83
卷 83, 期 -, 页码 697-725出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-biochem-060713-035546
关键词
ATPase; RNA folding; RNA structure; RNA unwinding; self-splicing intron
资金
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM070456] Funding Source: NIH RePORTER
- NIGMS NIH HHS [R01 GM070456, GM070456] Funding Source: Medline
Superfamily 2 helicase proteins are ubiquitous in RNA biology and have an extraordinarily broad set of functional roles. Central among these roles are the promotion of rearrangements of structured RNAs and the remodeling of ribonucleoprotein complexes (RNPs), allowing formation of native RNA structure or progression through a functional cycle of structures. Although all superfamily 2 helicases share a conserved helicase core, they are divided evolutionarily into several families, and it is principally proteins from three families, the DEAD-box, DEAH/RHA, and Ski2-like families, that function to manipulate structured RNAs and RNPs. Strikingly, there are emerging differences in the mechanisms of these proteins, both between families and within the largest family (DEAD-box), and these differences appear to be tuned to their RNA or RNP substrates and their specific roles. This review outlines basic mechanistic features of the three families and surveys individual proteins and the current understanding of their biological substrates and mechanisms.
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