核磁共振光谱法。氨基酸的碳-13自旋晶格弛豫时间测量。

Nuclear magnetic resonance spectroscopy. Carbon-13 spin-lattice relaxation time measurements of amino acids.

作者信息

Armitage I M, Huber H, Pearson H, Roberts J D

出版信息

Proc Natl Acad Sci U S A. 1974 May;71(5):2096-7. doi: 10.1073/pnas.71.5.2096.

DOI:10.1073/pnas.71.5.2096

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC388393/

Abstract

The (13)C spin-lattice relaxation times, T(1)'s, of several amino acids have been measured as a function of pD and concentration. A strong dependence of the carboxyl carbon T(1) was observed for both pD and concentration and is believed to be due to intermolecular associations. For the carboxyl carbon, spin rotation is proposed as the predominant relaxation mechanism, whereas the other carbons are relaxed mainly by the dipole-dipole mechanism, and their relaxation times are relatively independent of changes in concentration and pD.

摘要

已测量了几种氨基酸的（13）C自旋晶格弛豫时间T(1)，作为pD和浓度的函数。观察到羧基碳的T(1)对pD和浓度均有强烈依赖性，据信这是由于分子间缔合所致。对于羧基碳，提出自旋旋转是主要的弛豫机制，而其他碳主要通过偶极-偶极机制弛豫，并且它们的弛豫时间相对独立于浓度和pD的变化。

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FEBS Lett. 1973 Nov 15;37(1):27-32. doi: 10.1016/0014-5793(73)80419-3.

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Carbon-13 nuclear magnetic resonance studies on thyrotropin-releasing factor and related peptides.

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Study of internal rotations in gramicidin S by means of carbon-13 spin-lattice relaxation measurements.

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