Protein Modification with Ribose Generates N(δ)-(5-hydro-5-methyl-4-imidazolone-2-yl)-ornithine.
Protein Modification with Ribose Generates N(δ)-(5-hydro-5-methyl-4-imidazolone-2-yl)-ornithine.
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DOI:
10.3390/ijms23031224
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发表时间:
2022-01-22
影响因子:
5.6
通讯作者:
Nagai R
中科院分区:
文献类型:
--
作者:
Ban I;Sugawa H;Nagai R
Advanced glycation end products (AGEs) are associated with diabetes and its complications. AGEs are formed by the non-enzymatic reactions of proteins and reducing sugars, such as glucose and ribose. Ribose is widely used in glycation research as it generates AGEs more rapidly than glucose. This study analyzed the AGE structures generated from ribose-modified protein by liquid chromatography–quadrupole time-of-flight mass spectrometry. Among these AGEs, Nδ-(5-hydro-5-methyl-4-imidazolone-2-yl)-ornithine (MG-H1) was the most abundant in ribose-glycated bovine serum albumin (ribated-BSA) among others, such as Nε-(carboxymethyl) lysine, Nε-(carboxyethyl) lysine, and Nω-(carboxymethyl) arginine. Surprisingly, MG-H1 was produced by ribated-BSA in a time-dependent manner, whereas methylglyoxal levels (MG) were under the detectable level. In addition, Trapa bispinosa Roxb. hot water extract (TBE) possesses several anti-oxidative compounds, such as ellagic acid, and has been reported to inhibit the formation of MG-H1 in vivo. Thus, we evaluated the inhibitory effects of TBE on MG-H1 formation using ribose- or MG-modified proteins. TBE inhibited MG-H1 formation in gelatin incubated with ribose and ribated-BSA, but not in MG-modified gelatin. Furthermore, MG-H1 formation was inhibited by diethylenetriaminepentaacetic acid. These results demonstrated that ribose reacts with proteins to generate Amadori compounds and form MG-H1 via oxidation.
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DOI:
10.1016/j.bbrc.2010.01.095
发表时间:
2010-02-26
影响因子:
3.1
作者:
Nagai, Ryoji;Nagai, Mime;Shimasaki, Satoko;Baynes, John W.;Fujiwara, Yukio
通讯作者:
Fujiwara, Yukio
DOI:
10.1186/s12958-021-00832-y
发表时间:
2021-09-27
期刊:
Reproductive biology and endocrinology : RB&E
影响因子:
--
作者:
Jinno M;Nagai R;Takeuchi M;Watanabe A;Teruya K;Sugawa H;Hatakeyama N;Jinno Y
通讯作者:
Jinno Y
影响因子:
4.8
作者:
Kanda Y
通讯作者:
Kanda Y
影响因子:
2.4
作者:
Ohno R;Moroishi N;Sugawa H;Maejima K;Saigusa M;Yamanaka M;Nagai M;Yoshimura M;Amakura Y;Nagai R
通讯作者:
Nagai R
影响因子:
4.8
作者:
Nagai, R;Hayashi, CM;Horiuchi, S
通讯作者:
Horiuchi, S