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Orf-X protein This short protein has no known function and is found in Jaagsiekte sheep retrovirus. Jaagsiekte sheep retrovirus (JSRV) is the etiological agent of a contagious lung tumour of sheep known as sheep pulmonary adenomatosis. JSRV exhibits a simple genetic organisation, characteristic of the type D and type B retroviruses, with the canonical retroviral sequences gag, pro, pol and env encoding the structural proteins of the virion. An additional open reading frame (orf-x), of approximately 500 bp overlapping pol. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",