Bos taurus ultralong CDR H3 antibodies.

Bos taurus ultralong CDR H3 antibodies.
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DOI:
10.1016/j.sbi.2016.05.004
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发表时间:
2016-06
影响因子:
6.8
通讯作者:
Smider VV
Smider VV
中科院分区:
生物学2区
文献类型:
--
作者:
Vadnais ML;Smider VV

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牛抗体在具有异常长的重链第三互补决定区(CDR H3)方面是不寻常的。这些CDR H3具有大量半胱氨酸并形成特征在于β-带状“茎”和二硫键键合的“节”的独特结构域。奶牛似乎利用单个VDJ重排的体细胞超突变来产生令人惊讶的多种不同的CDR H3序列,其在旋钮内具有不同的二硫键模式。因此,牛可能是脊椎动物中唯一的进化抗体系统,具有不同的结合抗原的支架以及不寻常的多样性创造过程。
Cow antibodies are unusual in having an exceptionally long third complementarity determining region of the heavy chain (CDR H3). These CDR H3s have a multitude of cysteines and form a distinct domain characterized by a β-ribbon “stalk” and disulfide bonded “knob”. Cows appear to utilize somatic hypermutation of a single VDJ rearrangement to produce an astounding variety of distinct CDR H3 sequences with different disulfide bonding patterns within the knob. Thus, cows may be unique amongst vertebrates in evolving an antibody system with both a different scaffold for binding antigen as well as an unusual diversity creating process.
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