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一般說明
C1q与C1r、C1s以1:2:2的比例形成C1复合物，它是经典补体途径的第一组分。C1q由18条多肽链（六个A、六个B、六个C）组成（MW 460 kDa）。它们都含有一个由靠近N-末端的(Gly-Xaa-Yaa)重复序列组成的81-aa胶原样区域。三条链（A1B1C1）形成一个三螺旋，C端形成球状头部，其在结构和功能上可能是不同的结构域。
應用
补体成分C1q是血小板活化的重要调节因子。这一直是一个研究课题，因为血小板白细胞聚集在炎性疾病（如冠心病）中发挥着重要作用。特别是，C1q可抑制胶原蛋白诱导的聚集，提高活性氧（ROS）的产生。
生化／生理作用
无论是由于罕见的纯合子遗传缺陷还是转录/翻译缺陷，C1q缺乏几乎可以肯定是系统性红斑狼疮（SLE）的病因。这三个C1q亚基是通过一种新的转录同步机制表达的。
外觀
是10 mM HEPES、300 mM NaCl、pH 7.2的溶液
儲存類別代碼
10 - Combustible liquids
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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Anti-HLA-DQ antibodies are the predominant HLA class II donor-specific antibodies (DSAs) after transplantation. Recently, de novo DQ DSA has been associated with worse allograft outcomes. The aim of this study was to determine the further complement-binding characteristics of the most
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