Measurement of 2J(H,C)- and 3J(H,C)-coupling constants by alpha/beta selective HC(C)H-TOCSY

Autor:	E, Duchardt, C, Richter, B, Reif, S J, Glaser, J W, Engels, C, Griesinger, H, Schwalbe
Rok vydání:	2001
Předmět:	Carbon Isotopes Oligoribonucleotides Base Sequence Nucleic Acid Conformation Nuclear Magnetic Resonance Biomolecular
Zdroj:	Journal of biomolecular NMR. 21(2)
ISSN:	0925-2738
Popis:	A new heteronuclear NMR pulse sequence for the measurement of nJ(C,H) coupling constants, the alpha/beta selective HC(C)H-TOCSY, is described. It is shown that the S3E element (Meissner et al., 1997a,b) can be used to obtain spin state selective coherence transfer in molecules, in which adjacent CH moieties are labeled with 13C. Application of the alpha/beta selective HC(C)H-TOCSY to a 10 nt RNA tetraloop 5'-CGCUUUUGCG-3', in which the four uridine residues are 13C labeled in the sugar moiety, allowed measurement of two bond and three bond J(C,H) coupling constants, which provide additional restraints to characterize the sugar ring conformation of RNA in cases of conformational averaging.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::8f09ebfbce78124ccb852698ab8ad483 https://pubmed.ncbi.nlm.nih.gov/11727975 Zobrazit plný text záznamu Full text from SpringerLink