Primitive vertebrate immunity: what is the evolutionary derivative of molecules that define the adaptive immune system?
Primitive vertebrate immunity: what is the evolutionary derivative of molecules that define the adaptive immune system?
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原始脊椎动物免疫:定义适应性免疫系统的分子的进化衍生物是什么?
DOI:
10.1002/9780470514658.ch13
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发表时间:
1994
期刊:
影响因子:
--
通讯作者:
Flajnik,MF
中科院分区:
文献类型:
--
作者:
Flajnik,MF
The adaptive immune system is capable of responding to an infinite number of antigens with the antigen‐specific receptors immunoglobulin (Ig) and the T cell receptor (TCR). lg binds soluble antigens while TCR recognizes antigen bound in clefts of polymorphic self‐encoded major histocompatibility complex (MHC) class I and class II molecules. All of these molecules are wholly or partially composed of lg superfamily domains. TCR and lg use V‐set lg superfamily domains, always in heterodimeric forms, in antigen recognition. Although the ways in which TCR and Ig bind antigen are fundamentally different, the structure of the heterodimeric V domains is probably identical. The antigen‐binding cleft of MHC proteins has a structure unlike lg superfamily domains, although several investigators have proposed that this cleft is evolutionarily derived from lg domains. We believe the MHC cleft is a primitive structure, perhaps related to the peptide‐binding domains of intracellular chaperone proteins. A model is proposed whereby chaperone proteins were the primordial MHC molecules, presenting peptides derived from invariant proteins residing inside cells for recognition by lymphocytes with minimally diverse receptors. Such a system may be reflected today by the epithelial immune system, apparently governed by monomorphic MHC molecules and lymphocytes with unconventional antigen‐specific receptors.
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影响因子:
--
作者:
P. K. Srivastava;Robert G. Maki
通讯作者:
P. K. Srivastava;Robert G. Maki
DOI:
10.1016/0167-5699(92)90198-g
发表时间:
1992-01-01
期刊:
IMMUNOLOGY TODAY
影响因子:
--
作者:
JANEWAY, CA
通讯作者:
JANEWAY, CA
影响因子:
56.9
作者:
FLYNN, GC;CHAPPELL, TG;ROTHMAN, JE
通讯作者:
ROTHMAN, JE
影响因子:
2.7
作者:
Foltz,KR;Lennarz,WJ
通讯作者:
Lennarz,WJ
DOI:
--
发表时间:
1957
期刊:
影响因子:
--
作者:
Hidemiti Oka;Hiroshi Watanabe
通讯作者:
Hiroshi Watanabe