文章基本信息

标题：Characterization of heteropolymeric hexosaminidase A in human X mouse hybrid cells
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作者：J Chern ; E Beutler ; W Kuhl 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1976
卷号：73
期号：10
页码：3637-3640
DOI：10.1073/pnas.73.10.3637
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Expression of heteropolymeric hexosaminidase A activity is reported in a human X mouse hybrid cell line that contains an X/15 translocation chromosome but lacks human chromosome 5 and has no detectable human hexosaminidase B activity. (Hexosaminidase is beta-N-acetylglucosaminidase; EC 3.2.1.30 ; 2-acetamido-2-deoxy-beta-D-glucoside acetamidodeoxyglucohydrolase.) That the "hexosaminidase A" enzyme of these cells contains the human hexosaminidase-alpha subunit and not the human hexosaminidase-beta subunit is indicated by the cells' reactions to specific antisera prepared against the alpha subunit and against the beta subunit. Our results indicate that the "hexosaminidase A" activity in this hybrid cell line is the expression of a hybrid molecule composed of human hexosaminidase-alpha subunit and a mouse hexosaminidase subunit. These results are consistent with the hypothesis that the human hexosaminidase A enzyme is formed from alpha and beta subunits coded for by genes on chromosomes 15 and 5, respectively.