کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3408292 | 1223659 | 2007 | 6 صفحه PDF | دانلود رایگان |

The nucleocapsid (N) gene of human coronavirus strain OC43 (HCoV-OC43) was amplified by reverse transcriptase-polymerase chain reaction, and cloned in pENTR™/D-TOPO® plasmid. This plasmid containing the N gene was recombined with in a BaculoDirect™ baculovirus DNA designed in order to express N protein in fusion with a C-terminal polyhistidine tag containing V5 epitope. Sf21 cells were transfected with recombinant baculovirus DNA. Recombinant N protein was extracted from infected cells, analysed by SDS-PAGE and Western blot, and purified by Ni2+ affinity procedure. Sera from 100 healthcare workers and five 2–3-year-old children were tested in a Western blot assay using the purified recombinant N protein. All of the sera from adults and two of the sera from children have a positive result.
Journal: Journal of Virological Methods - Volume 139, Issue 2, February 2007, Pages 175–180