1Y2Y
Structural Characterization of Nop10p using Nuclear Magnetic Resonance Spectroscopy
Summary for 1Y2Y
| Entry DOI | 10.2210/pdb1y2y/pdb |
| Descriptor | Ribosome biogenesis protein Nop10 (1 entity in total) |
| Functional Keywords | box h/aca snorna, snornp, pseudouridine, biosynthetic protein |
| Biological source | Saccharomyces cerevisiae (baker's yeast) |
| Cellular location | Nucleus, nucleolus: Q6Q547 |
| Total number of polymer chains | 1 |
| Total formula weight | 6649.74 |
| Authors | Khanna, M.,Wu, H.,Johansson, C.,Caizergues-Ferrer, M.,Feigon, J. (deposition date: 2004-11-23, release date: 2005-12-06, Last modification date: 2024-05-22) |
| Primary citation | Khanna, M.,Wu, H.,Johansson, C.,Caizergues-Ferrer, M.,Feigon, J. Structural study of the H/ACA snoRNP components Nop10p and the 3' hairpin of U65 snoRNA RNA, 12:40-52, 2006 Cited by PubMed Abstract: The H/ACA small nucleolar ribonucleoprotein (snoRNP) complexes guide the modification of uridine to pseudouridine at conserved sites in rRNA. The H/ACA snoRNPs each comprise a target-site-specific snoRNA and four core proteins, Nop10p, Nhp2p, Gar1p, and the pseudouridine synthase, Cbf5p, in yeast. The secondary structure of the H/ACA snoRNAs includes two hairpins that each contain a large internal loop (the pseudouridylation pocket), one or both of which are partially complementary to the target RNA(s). We have determined the solution structure of an RNA hairpin derived from the human U65 box H/ACA snoRNA including the pseudouridylation pocket and adjacent stems, providing the first three-dimensional structural information on these H/ACA snoRNAs. We have also determined the structure of Nop10p and investigated its interaction with RNA using NMR spectroscopy. Nop10p contains a structurally well-defined N-terminal region composed of a beta-hairpin, and the rest of the protein lacks a globular structure. Chemical shift mapping of the interaction of RNA constructs of U65 box H/ACA 3' hairpin with Nop10p shows that the beta-hairpin binds weakly but specifically to RNA. The unstructured region of Nop10p likely interacts with Cbf5p. PubMed: 16373493DOI: 10.1261/rna.2221606 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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