χ1 angle information from a simple two-dimensional NMR experiment that identifies trans 3JNCγ couplings in isotopically enriched proteins
χ1 angle information from a simple two-dimensional NMR experiment that identifies trans 3JNCγ couplings in isotopically enriched proteins
复制标题
来自简单二维 NMR 实验的 χ 角信息,该实验可识别同位素富集蛋白质中的反式 3JNCγ 偶联
DOI:
--
复制
发表时间:
1997
期刊:
影响因子:
--
通讯作者:
A. Bax
中科院分区:
文献类型:
--
作者:
J. Hu;A. Bax
New quantitative J correlation experiments are used for measuring all two- and three-bondcouplings between 15N and aliphatic side-chain carbons in proteins uniformly enriched in 13Cand 15N. Results show that 3JNCβ and 2JNCβ invariably are very small.Therefore, a simple and relatively sensitive two-dimensional spin-echo difference experimentcan be used to identify residues with a 3JNCγ coupling substantially larger than 1Hz, indicative of a trans arrangement between N and Cγ. This measurement thereforeprovides χ1 angle information for residues with an aliphatic Cγ carbon, andthereby also aids in making stereospecific assignments of Hβ resonances. Experimentsare demonstrated for ubiquitin and for a complex between calmodulin and a 26-residuepeptide.
DOI:
10.1021/bi9530144
发表时间:
1996
期刊:
Biochemistry.
影响因子:
--
作者:
Wand,AJ;Urbauer,JL;McEvoy,RP;Bieber,RJ
通讯作者:
Bieber,RJ