How a single protein complex accommodates many different H/ACA RNAs.

ABSTRACT: More than 100 mammalian H/ACA RNAs form an equal number of ribonucleoproteins (RNPs) by associating with the same four core proteins. The function of these H/ACA RNPs is essential for biogenesis of the ribosome, splicing of precursor mRNAs (pre-mRNAs), maintenance of telomeres and probably for additional cellular processes. Recent crystal structures of archaeal H/ACA protein complexes show how the same four proteins accommodate >100 distinct but related H/ACA RNAs and reveal that a spatial mutation cluster underlies dyskeratosis congenita, a syndrome of bone marrow failure.

SUBMITTER: Meier UT 

PROVIDER: S-EPMC4314714 | biostudies-literature | 2006 Jun

REPOSITORIES: biostudies-literature