Structure and role of carbohydrate in human erythropoietin.
Structure and role of carbohydrate in human erythropoietin.
复制标题
碳水化合物在人促红细胞生成素中的结构和作用。
DOI:
10.1007/978-1-4613-0623-8_7
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发表时间:
1989
影响因子:
--
通讯作者:
Fukuda,MN
中科院分区:
文献类型:
--
作者:
Fukuda,M;Sasaki,H;Fukuda,MN
Erythropoietin is a glycoprotein hormone with a molecular weight of 31 kilodaltons, with 40% of its molecular mass accounted for by carbohydrates. These carbohydrates have been shown to consist of one 0-linked with three N-linked oligosaccharide1,2. Erythropoietin is synthesized in the kidney and circulates in the blood to stimulate red cell proliferation and differentiation in the bone marrow. This hormonal activity is abolished in vivo after sialic acid residues are removed3,4. But, the asialo-erythropoietin has full activity when the assay is doneinvitro5. The apparent loss of activity of the asialo-erythropoietininvivocan be explained by the rapid clearance from the circulation by hepatic cells5. When the terminal sialic acid residues are removed from the oligosaccharides, galactose residues become the new terminal sugars. These galactose-terminated glycoproteins may then be recognized by receptors present in hepatocytes and are internalized by endocytosis, followed by digestion with lysosomes6. Thus, it is apparent that the erythropoietin should be fully glycosylated, in particular, sialylated well to accomplish the hormone action in vivo.
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影响因子:
4.2
作者:
Thonar,EJ;Meyer,RF;Dennis,RF;Lenz,ME;Maldonado,B;Hassell,JR;Hewitt,AT;StarkJr,WJ;Stock,EL;Kuettner,KE
通讯作者:
Kuettner,KE
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Fukuda,M;Dell,A;Fukuda,MN
通讯作者:
Fukuda,MN
DOI:
10.1016/s0021-9258(18)45317-3
发表时间:
1987-09
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hiroshi Sasakis;B. Bothner;A. Dell;Minoru Fukudall
通讯作者:
Hiroshi Sasakis;B. Bothner;A. Dell;Minoru Fukudall
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Fukuda,M;Dell,A;Oates,JE;Fukuda,MN
通讯作者:
Fukuda,MN
影响因子:
4.8
作者:
E. Goldwasser;C. Kung;J. Eliason
通讯作者:
J. Eliason