Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2.
Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2.
复制标题
DOI:
10.1016/j.virol.2021.01.004
复制
发表时间:
2021-05
期刊:
影响因子:
3.7
通讯作者:
Cirkovic Velickovic T
中科院分区:
文献类型:
--
作者:
Djukic T;Mladenovic M;Stanic-Vucinic D;Radosavljevic J;Smiljanic K;Sabljic L;Devic M;Cujic D;Vasovic T;Simovic A;Radomirovic M;Cirkovic Velickovic T
Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production. SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified and characterized biochemically and immunologically. Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower (94% and 96.5%, respectively). Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.
登录
查看更多内容
影响因子:
1.6
作者:
Zuo X;Mattern MR;Tan R;Li S;Hall J;Sterner DE;Shoo J;Tran H;Lim P;Sarafianos SG;Kazi L;Navas-Martin S;Weiss SR;Butt TR
通讯作者:
Butt TR
影响因子:
28.3
作者:
Gorbalenya, Alexander E.;Baker, Susan C.;Ziebuhr, John
通讯作者:
Ziebuhr, John
影响因子:
82.9
作者:
Long, Quan-Xin;Liu, Bai-Zhong;Huang, Ai-Long
通讯作者:
Huang, Ai-Long
影响因子:
--
作者:
Maache, M;Komurian-Pradel, F;Paranhos-Baccalà, G
通讯作者:
Paranhos-Baccalà, G
影响因子:
13.2
作者:
Sun, Baoqing;Feng, Ying;Chen, Ling
通讯作者:
Chen, Ling