Publication Abstract from PubMed
The SAM domain of the Saccharomyces cerevisiae post-transcriptional regulator Vts1 has a high affinity towards RNA hairpins containing a CUGGC pentaloop. We present the 1.6 Angstroms X-ray crystal structure of the Vts1 SAM domain in its unliganded state, and the NMR solution structure of this domain in its RNA-bound state. Both structures reveal a canonical five helix SAM domain flanked by additional secondary structural elements at the N and C termini. The two structures are essentially identical, implying that no major structural rearrangements occur upon RNA binding. Amide chemical shift changes map the RNA-binding site to a shallow, basic patch at the junction of helix alpha5 and the loop connecting helices alpha1 and alpha2.
The NMR and X-ray structures of the Saccharomyces cerevisiae Vts1 SAM domain define a surface for the recognition of RNA hairpins.,Aviv T, Amborski AN, Zhao XS, Kwan JJ, Johnson PE, Sicheri F, Donaldson LW J Mol Biol. 2006 Feb 17;356(2):274-9. Epub 2005 Dec 7. PMID:16375924[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
