Stereo-selective binding of monoclonal antibodies to the poly-γ-D-glutamic acid capsular antigen of Bacillus anthracis.

Stereo-selective binding of monoclonal antibodies to the poly-γ-D-glutamic acid capsular antigen of Bacillus anthracis.
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单克隆抗体与炭疽杆菌聚γ-D-谷氨酸荚膜抗原的立体选择性结合。

DOI:
10.1016/j.molimm.2013.03.010
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发表时间:
2013
影响因子:
3.6
通讯作者:
Kozel,ThomasR
Kozel,ThomasR
中科院分区:
医学3区
文献类型:
--
作者:
Hubbard,MarkA;Thorkildson,Peter;Welch,WilliamH;Kozel,ThomasR

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炭疽杆菌被一个完全由 γ-连接的 d-谷氨酸 (γDPGA) 组成的抗吞噬细胞荚膜包围。 γDPGA 是毒力所必需的,并在孢子萌发后大量产生。我们之前描述了几种 γDPGA 反应性单克隆抗体的分离。该试剂在免疫保护和诊断应用中均有效。目前的工作是为了进一步研究 γDPGA 反应性单克隆抗体的特异性。使用表面等离振子共振来表征每种 mAb 的特异性。我们的结果表明,每种 mAb 对与 d-谷氨酸寡聚物的结合具有立体选择性,但程度不同。特别是,mAb F26G3 对 γDPGA 具有高度选择性;立体化学的改变破坏了识别。 mAb 反应性的这些差异表明,mAb F26G3 与 γDPGA 的结合比带负电的抗原和带正电的抗体之间的非定向离子相互作用更具特异性。
Bacillus anthracis is surrounded by an anti-phagocytic capsule that is entirely composed of γ-linked d-glutamic acid (γDPGA). γDPGA is required for virulence and is produced in large quantities following spore germination. We have previously described the isolation of several γDPGA-reactive mAbs. The reagents are effective in both immunoprotection and diagnostic applications. The current work was done to further investigate the specificity of γDPGA-reactive mAbs. The specificity of each mAb was characterized using surface plasmon resonance. Our results indicate that each mAb is stereoselective for binding to d-glutamic acid oligomers, but to varying degrees. In particular, mAb F26G3 is highly selective for γDPGA; alterations in stereochemistry disrupted recognition. These differences in mAb reactivity suggest that binding of γDPGA by mAb F26G3 is more specific than non-directional ionic interactions between a negatively charged antigen and a positively charged antibody.
血清和二氧化碳在炭疽杆菌荚膜形成中的作用。
DOI: --
发表时间: 1964
期刊: Journal of General Microbiology
影响因子: --
作者:
E. Meynell;G. Meynell
通讯作者: G. Meynell
DOI: --
发表时间: 1966
期刊: Biochemistry
影响因子: 2.9
作者:
J. Goodman;D. Nitecki
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DOI: 10.1016/j.jmb.2003.10.007
发表时间: 2003-12-05
影响因子: 5.6
作者:
Zemlin, M;Klinger, M;Kirkham, PM
通讯作者: Kirkham, PM
蛋白质分子中谷氨酸的连接。
DOI: --
发表时间: 1949
影响因子: 4.1
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F. Haurowitz;F. Bursa
通讯作者: F. Bursa
DOI: --
发表时间: 1956
影响因子: 4.1
作者:
H. T. Zwartouw;H. Smith
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