Purification and characterization of two putative HLA class II associated proteins: PHAPI and PHAPII.
Purification and characterization of two putative HLA class II associated proteins: PHAPI and PHAPII.
复制标题
两种假定的 HLA II 类相关蛋白:PHAPI 和 PHAPII 的纯化和表征。
DOI:
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发表时间:
1994
期刊:
影响因子:
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通讯作者:
Norbert Hilschmann
中科院分区:
文献类型:
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作者:
M. Vaesen;S. Barnikol;Hilde Götz;L. A. Awni;Thomas Cole;Bodo Zimmermann;Hartmut Kratzin;Norbert Hilschmann
In addition to their well defined role in presentation of processed antigen on the cell surface, class II molecules are able to transduce signals into the cell after binding of ligands. The cytoplasmic regions of class II molecules might function as docking sites for as yet unidentified proteins that are components of this signalling pathway. Here we report on two putative HLA class II associated proteins (PHAPI and PHAPII) which have been purified from the cytosolic fraction of the human lymphoblastoid B-cell line H2LCL using an affinity matrix composed of the synthetic biotinylated cytoplasmic region of the DR2 alpha chain immobilized on avidin agarose. The sequence obtained for PHAPI revealed a novel primary structure with a leucine/isoleucine rich N-terminal region. Protein data and the cDNA sequence obtained for PHAPII agree with the cDNA sequence of SET that has been described recently. Both PHAPI and PHAPII have an extended highly acidic C-terminal region. Based on their primary structure we speculate that PHAPI and PHAPII are involved in the generation of intracellular signalling events that lead to regulation of transcriptional activity after binding of a ligand to HLA class II molecules.
DOI:
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发表时间:
1993
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
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作者:
Watts,TH;Alaverdi,N;Wade,WF;Linsley,PS
通讯作者:
Linsley,PS
DOI:
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发表时间:
1990
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
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作者:
Lane,PJ;McConnell,FM;Schieven,GL;Clark,EA;Ledbetter,JA
通讯作者:
Ledbetter,JA