Structural highlights
5xdr is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , |
| Gene: | DHX15, DBP1, DDX15 (HUMAN) |
| Activity: | RNA helicase, with EC number 3.6.4.13 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[DHX15_HUMAN] Pre-mRNA processing factor involved in disassembly of spliceosomes after the release of mature mRNA. In cooperation with TFIP11 seem to be involved in the transition of the U2, U5 and U6 snRNP-containing IL complex to the snRNP-free IS complex leading to efficient debranching and turnover of excised introns.[1]
Publication Abstract from PubMed
DEAH-box RNA helicase 15 (DHX15) plays important roles in RNA metabolism, including in splicing and in ribosome biogenesis. In addition, mammalian DHX15 also mediates the innate immune sensing of viral RNA. However, structural information on this protein is not available, although the structure of the fungal orthologue of this protein, Prp43, has been elucidated. Here, the crystal structure of the ADP-bound form of human DHX15 is reported at a resolution of 2.0 A. This is the first structure to be revealed of a member of the mammalian DEAH-box RNA helicase (DEAH/RHA) family in a nearly complete form, including the catalytic core consisting of the two N-terminal RecA domains and the C-terminal regulatory domains (CTD). The ADP-bound form of DHX15 displayed a compact structure, in which the RecA domains made extensive contacts with the CTD. Notably, a potential RNA-binding site was found on the surface of a RecA domain with positive electrostatic potential. Almost all structural features were conserved between the fungal Prp43 and the human DHX15, suggesting that they share a fundamentally common mechanism of action and providing a better understanding of the specific mammalian functions of DHX15.
The crystal structure of human DEAH-box RNA helicase 15 reveals a domain organization of the mammalian DEAH/RHA family.,Murakami K, Nakano K, Shimizu T, Ohto U Acta Crystallogr F Struct Biol Commun. 2017 Jun 1;73(Pt 6):347-355. doi:, 10.1107/S2053230X17007336. Epub 2017 May 25. PMID:28580923[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yoshimoto R, Kataoka N, Okawa K, Ohno M. Isolation and characterization of post-splicing lariat-intron complexes. Nucleic Acids Res. 2009 Feb;37(3):891-902. doi: 10.1093/nar/gkn1002. Epub 2008, Dec 22. PMID:19103666 doi:http://dx.doi.org/10.1093/nar/gkn1002
- ↑ Murakami K, Nakano K, Shimizu T, Ohto U. The crystal structure of human DEAH-box RNA helicase 15 reveals a domain organization of the mammalian DEAH/RHA family. Acta Crystallogr F Struct Biol Commun. 2017 Jun 1;73(Pt 6):347-355. doi:, 10.1107/S2053230X17007336. Epub 2017 May 25. PMID:28580923 doi:http://dx.doi.org/10.1107/S2053230X17007336
