An improved method for the determination of gamma-carboxyglutamic acid in proteins, bone, and urine.

An improved method for the determination of gamma-carboxyglutamic acid in proteins, bone, and urine.
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一种测定蛋白质、骨骼和尿液中 γ-羧基谷氨酸的改进方法。

DOI:
10.1016/0003-2697(83)90150-1
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发表时间:
1983
影响因子:
2.9
通讯作者:
K. Katayama
K. Katayama
中科院分区:
生物学4区
文献类型:
--
作者:
M. Kuwada;K. Katayama

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提出了一种高效液相色谱分离γ-羧谷氨酸(Gla)荧光衍生物的方法。蛋白质样品的碱性水解产物在乙硫醇存在下与邻苯二醛反应2 min,用硅基阴离子交换剂填充的短柱在等压条件下从其他氨基酸中分离出γ-羧基谷氨酸的荧光衍生物。该方法可在10 min内定量分析低至200 fmol的γ-羧谷氨酸。本文提出的方法缩短了Gla的分析时间,并且比我们之前描述的方法至少灵敏10倍。生物化学学报,2004,18(2):559 - 565。本文报道了将该方法应用于鸡骨中含甲酸溶性或不溶性γ-羧谷氨酸蛋白的测定,以及鸡骨中γ-羧谷氨酸含量随年龄增长而增加的情况。
A method of high-performance liquid chromatographic separation of the fluorescence derivative of γ-carboxyglutamic acid (Gla) is presented. Alkaline hydrolysates of protein samples were reacted with o-phthalaldehyde in the presence of ethanethiol for 2 min, and the fluorescence derivative of γ-carboxyglutamic acid was resolved from the other amino acids by a short column packed with silica-based anion exchanger under isocratic conditions. By this method, as low as 200 fmol of γ-carboxyglutamic acid can be quantitatively analyzed within 10 min. The method presented here shortened the analysis time for Gla and was at least 10 times more sensitive than the method we described previously (Anal. Biochem.117, 259–265, 1981). The application of this method to the formic acid-soluble or insoluble γ-carboxyglutamic acid-containing proteins in chicken bone and the concomitant increase of γ-carboxyglutamic acid content in chicken bone with age are reported.
DOI: 10.1016/s0021-9258(18)42960-2
发表时间: 1981-12
期刊: The Journal of biological chemistry
影响因子: --
作者:
P. Price;M. Williamson;J. W. Lothringer
通讯作者: P. Price;M. Williamson;J. W. Lothringer
DOI: --
发表时间: 1980
期刊: The Journal of biological chemistry
影响因子: --
作者:
Poser,JW;Esch,FS;Ling,NC;Price,PA
通讯作者: Price,PA
维生素 D 缺乏的鸡骨中 γ-羧基谷氨酸和骨钙素浓度的变化。
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Lian,JB;Glimcher,MJ;Roufosse,AH;Hauschka,PV;Gallop,PM;Cohen-Solal,L;Reit,B
通讯作者: Reit,B