Department of Viroscience, Erasmus Medical Center, Rotterdam, the Netherlands.
J Virol. 2014 Feb;88(3):1834-8. doi: 10.1128/JVI.02935-13. Epub 2013 Nov 20.
Middle East respiratory syndrome coronavirus (MERS-CoV) replicates in cells of different species using dipeptidyl peptidase 4 (DPP4) as a functional receptor. Here we show the resistance of ferrets to MERS-CoV infection and inability of ferret DDP4 to bind MERS-CoV. Site-directed mutagenesis of amino acids variable in ferret DPP4 thus revealed the functional human DPP4 virus binding site. Adenosine deaminase (ADA), a DPP4 binding protein, competed for virus binding, acting as a natural antagonist for MERS-CoV infection.
中东呼吸综合征冠状病毒(MERS-CoV)使用二肽基肽酶 4(DPP4)作为功能性受体在不同物种的细胞中复制。在这里,我们展示了雪貂对 MERS-CoV 感染的抵抗力,以及雪貂 DPP4 无法结合 MERS-CoV 的事实。因此,对氨基酸可变的雪貂 DPP4 进行定点突变,揭示了功能性人 DPP4 病毒结合位点。腺苷脱氨酶(ADA),一种 DPP4 结合蛋白,与病毒竞争结合,作为 MERS-CoV 感染的天然拮抗剂。
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