实验数据通过半对数变换的拟合到方程Y=Bottom+(Top-Bottom)/(1+10^(X-Log(IC50))),计算肽浓度导致一半抑制,即最大抑制一半时的肽浓度(IC50),方程式中Y是形成的激动剂-MHC-II复合物的浓度,X是所提供抑制剂浓度的对数,顶部是曲线的上平台(即没有抑制肽),底部是曲线的下平台(即具有饱和浓度的抑制肽)。IC50...
一些研究已经显示结合核心外的残基对结合和后续的T细胞识别的影响。在结合核心外部区域但在延伸的结合凹槽内的残基成为多肽侧翼残基(peptide-flanking residues,PFRs)。PFR对T细胞识别的重要性已经被研究。大家普遍认为这些侧面区域有助于T细胞对pMHC的识别。Arnold及其同事的研究表明某些T反应是完全依赖于在多肽P1和P11的残基。
US20020164340 * 2001年5月7日 2002年11月7日 Mount Sinai School Of Medicine Of The City Of New York Multivalent MHC class II - peptide chimerasUS20020164340 * May 7, 2001 Nov 7, 2002 Mount Sinai School Of Medicine Of The City Of New York Multivalent MHC class II - peptide chimeras...
根据基因的位置和功能,主要组织相容性复合体分为三类,分别为MHC class I,MHC class II,MHC class III。MHC class I(MHC I):位于一般细胞表面上,可以提供一般细胞内的一些状况,比如该细胞遭受病毒感染,则将病毒外膜碎片之氨基酸链(peptide)透过MHC提示在细胞外侧,可以供杀手CD8+ T细胞等辨识,...
HLA-DRA is one of the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha and a beta chain, both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Clas...
pMHC pMHC是指抗原肽-MHC分子复合物,位于细胞或靶细胞表面。TCR不能直接识别蛋白质抗原表面的表位,只能特异性识别抗原提呈细胞或靶细胞表面的抗原肽-MHC分子复合物(pMHC)。分为peptide-MHC class I或 peptide-MHC class II.
Despite advances in predicting physical peptide-major histocompatibility complex I (pMHC I) binding, it remains challenging to identify functionally immunogenic neoepitopes, especially for MHC II. By using the results of >36,000 immunogenicity assay,
ProImmune位于英国牛津,是世界上MHC五聚体和单体的主要供应商。除提供重组MHC外,ProImmune还是为客户合成 MHC-Peptide化合物的专业公司,它能根据客户所提供的肽序列,为客户合成特殊的MHC-Peptide化合物。此外为方便广大客 户,ProImmune还提供MHC Tetramer (R-PE) + Anti-CD8 (FITC) 试剂盒。
CD4+ T cells orchestrate adaptive immune responses via binding of antigens to their receptors through specific peptide/MHC-II complexes. To study these responses, it is essential to identify protein-derived MHC-II peptide ligands that constitute epitopes
First, the antigens endocytosed by the antigen presenting cells must be broken down into antigenic peptides. Second, class II molecules are synthesized with their peptide-binding site blocked by invariant chain (Ii), and they aquire the capacity to bind antigens only after Ii has ...