identical methyl groups remain inequivalent in the course of an n-propyl⇄isopropyl isomerization operative in Fe+ -mediated dehydration of propanols. The reversibility of the β-hydrogen transfer steps is addressed by examination of the H/D equilibration in metastable complexes of Fe+ with a set of selectively deuterated propanols by using tandem mass spectrometry.
Intramolecular Thermal Motions in Liquid n-Propanol (+ Glycerol), A Proton Magnetic Relaxation Study. 2
作者:M. Poeschl、H. G. Hertz
DOI:10.1021/j100084a043
日期:1994.8
NAPHTHYRIDINE COMPOUNDS FOR INHIBITION OF RAF KINASES
申请人:[en]ENLIVEN INC.
公开号:WO2024044713A1
公开(公告)日:2024-02-29
The present disclosure relates to compounds and compositions for inhibition of RAF serine/threonine protein kinases, methods of preparing said compounds and compositions, and their use in the treatment of various cancers.
Local Deuteration Enables NMR Observation of Methyl Groups in Proteins from Eukaryotic and Cell‐Free Expression Systems
作者:Abhinav Dubey、Nikolay Stoyanov、Thibault Viennet、Sandeep Chhabra、Shantha Elter、Jan Borggräfe、Aldino Viegas、Radosław P. Nowak、Nikola Burdzhiev、Ognyan Petrov、Eric S. Fischer、Manuel Etzkorn、Vladimir Gelev、Haribabu Arthanari
DOI:10.1002/anie.202016070
日期:2021.6.14
Therapeutically relevant proteins such as GPCRs, antibodies and kinases face clear limitations in NMRstudies due to the challenges in site-specific isotopelabeling and deuteration in eukaryotic expression systems. Here we describe an efficient and simple method to observe the methylgroups of leucine residues in proteins expressed in bacterial, eukaryotic or cell-free expression systems without modification
由于真核表达系统中位点特异性同位素标记和氘化的挑战,治疗相关蛋白(例如 GPCR、抗体和激酶)在 NMR 研究中面临明显的局限性。在这里,我们描述了一种有效且简单的方法来观察细菌、真核或无细胞表达系统中表达的蛋白质中亮氨酸残基的甲基,而无需修改表达方案。该方法依赖于简单的立体选择性13 C 标记和亮氨酸氘化,从而减少了对蛋白质额外氘化的需要。通过禁止相干转移(FCT)实验和模拟详细检验了“局部”氘化的光谱优势。这种标记方法的实用性在细菌视紫红质的无细胞合成和人类 RBM39 的 RRM2 结构域的昆虫细胞表达中得到了证明。