3dw4
Crystal Structure of the Sarcin/Ricin Domain from E. COLI 23 S rRNA, U2650-OCH3 modifiedCrystal Structure of the Sarcin/Ricin Domain from E. COLI 23 S rRNA, U2650-OCH3 modified
Structural highlights
Publication Abstract from PubMedSite-specific 2'-methylseleno RNA labeling is a promising tool for tackling the phase problem in RNA crystallography. We have developed an efficient strategy for crystallization and structure determination of RNA and RNA/protein complexes based on preliminary crystallization screening of 2'-OCH(3)-modified RNA sequences, prior to the replacement of 2'-OCH(3) groups with their 2'-SeCH(3) counterparts. The method exploits the similar crystallization properties of 2'-OCH(3)- and 2'-SeCH(3)-modified RNAs and has been successfully validated for two test cases. In addition, our data show that 2'-SeCH(3)-modified RNA have an increased resistance to X-ray radiolysis in comparison with commonly used 5-halogen-modified RNA, which permits collection of experimental electron density maps of remarkable quality. A fast selenium derivatization strategy for crystallization and phasing of RNA structures.,Olieric V, Rieder U, Lang K, Serganov A, Schulze-Briese C, Micura R, Dumas P, Ennifar E RNA. 2009 Apr;15(4):707-15. Epub 2009 Feb 18. PMID:19228585[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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