Structure-based design of supercharged, highly thermoresistant antibodies.

Structure-based design of supercharged, highly thermoresistant antibodies.
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DOI:
10.1016/j.chembiol.2012.01.018
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发表时间:
2012-04-20
影响因子:
--
通讯作者:
Ellington AD
Ellington AD
中科院分区:
生物1区
文献类型:
--
作者:
Miklos AE;Kluwe C;Der BS;Pai S;Sircar A;Hughes RA;Berrondo M;Xu J;Codrea V;Buckley PE;Calm AM;Welsh HS;Warner CR;Zacharko MA;Carney JP;Gray JJ;Georgiou G;Kuhlman B;Ellington AD

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Mutation of surface residues to charged amino acids increases resistance to aggregation and can enable reversible unfolding. We have developed a protocol using the Rosetta computational design package that “supercharges” proteins while considering the energetic implications of each mutation. Using a homology model, a single-chain variable fragment antibody was designed that has a markedly enhanced resistance to thermal inactivation and displays an unanticipated ≈30-fold improvement in affinity. Such supercharged antibodies should prove useful for assays in resource-limited settings and for developing reagents with improved shelf lives.
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