Exposure of major neutral glycolipids in red cells to galactose oxidase. Effect of neuraminidase.

Exposure of major neutral glycolipids in red cells to galactose oxidase. Effect of neuraminidase.
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红细胞中的主要中性糖脂暴露于半乳糖氧化酶。

DOI:
10.1111/j.1432-1033.1986.tb09709.x
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发表时间:
1986
期刊:
European journal of biochemistry
影响因子:
--
通讯作者:
Gahmberg,CG
Gahmberg,CG
中科院分区:
--
文献类型:
--
作者:
Lampio,A;Rauvala,H;Gahmberg,CG

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通过用半乳糖氧化酶氧化细胞并用NaB 2 H4还原细胞,研究了几种主要红细胞糖脂对半乳糖氧化酶的暴露。分离后,通过质谱法检测氘标记物。通过该方法测量,人和猪红细胞中暴露60-70%的赤霉素。相比之下,豚鼠红细胞中的去唾液酸-GM 2和绵羊红细胞中的Forssman糖脂主要处于隐蔽状态。神经氨酸酶处理使氘标记物掺入脱唾液酸-GM 24 -8倍增加。当用神经氨酸酶/半乳糖氧化酶/NaB 3 H4方法标记绵羊红细胞时,在Forssman糖脂中观察到类似的效果。相比之下,在猪和人的globosides中标记的增加仅为约10-40%,其有效地暴露于天然红细胞中已经存在的半乳糖氧化酶。
The exposure of several major red‐cell glycolipids to galactose oxidase was studied by oxidizing the cells with the enzyme and reducing them with NaB2H4. After isolation, the deuterium label was detected by mass fragmentography. 60–70% globoside in human and porcine erythrocytes was exposed as measured by this method. In contrast, asialo‐GM2in guinea‐pig erythrocytes and Forssman glycolipid in sheep erythrocytes were mainly in a cryptic state. Neuraminidase treatment increased the incorporation of deuterium label to asialo‐GM24–8‐fold. A similar effect was seen in Forssman glycolipid when sheep red cells were labeled with the neuraminidase/galactose oxidase/NaB3H4method. In contrast, the increase in labeling was only about 10–40% in porcine and human globosides, which were efficiently exposed to galactose oxidase already in native red cells.
肠膜明串珠菌中顺式痘酸的存在和鉴定。
DOI: 10.1016/0926-6542(64)90082-4
发表时间: 1964
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DOI: --
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DOI: 10.1111/j.1432-1033.1974.tb03599.x
发表时间: 1974-01-01
期刊: EUROPEAN JOURNAL OF BIOCHEMISTRY
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