IgG antibodies to phosphorylcholine exhibit more diversity than their IgM counterparts
摘要:
An amino acid sequence analysis of the N-terminal immunoglobulin heavy and light chain variable regions (VH and VL) from 16 hybridoma proteins which bind phosphorylcholine as well as the complete sequence analysis of 9 of these VH regions is presented. There seem to be more VH regions participating in the phosphorylcholine response than can be encoded directly by germ-line VH gene segments. Moreover, the V regions from IgG antibodies are considerably more variable than those from their IgM counterparts. These observations raise the possibility that a somatic mechanism for V region diversification produces greater diversity in IgG than in IgM antibodies.
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关键词:
Clone Cells Hybrid Cells Animals Mice Choline Phosphorylcholine Immunoglobulin G Immunoglobulin M Immunoglobulin Variable Region Myeloma Proteins
DOI:
10.1038/291029a0
被引量:
年份:
1981
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