OST-HTH: a novel predicted RNA-binding domain.

ABSTRACT:

Background

The mechanism by which the arthropod Oskar and vertebrate TDRD5/TDRD7 proteins nucleate or organize structurally related ribonucleoprotein (RNP) complexes, the polar granule and nuage, is poorly understood. Using sequence profile searches we identify a novel domain in these proteins that is widely conserved across eukaryotes and bacteria.

Results

Using contextual information from domain architectures, sequence-structure superpositions and available functional information we predict that this domain is likely to adopt the winged helix-turn-helix fold and bind RNA with a potential specificity for dsRNA. We show that in eukaryotes this domain is often combined in the same polypeptide with protein-protein- or lipid- interaction domains that might play a role in anchor

SUBMITTER: Anantharaman V 

PROVIDER: S-EPMC2848206 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature