Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - A captured viral interleukin 10 gene with cellular exon structure
AU - Jayawardane, Gamini
AU - Russell, George C.
AU - Thomson, Jackie
AU - Deane, David
AU - Cox, Helen
AU - Gatherer, Derek
AU - Ackermann, Mathias
AU - Haig, David M.
AU - Stewart, James P.
PY - 2008/10
Y1 - 2008/10
N2 - We have characterized a novel, captured and fully functional viral interleukin (IL)-10 homologue ((OvHV)IL-10) from the gammaherpesvirus ovine herpesvirus 2. Unlike IL-10 homologues from other gammaherpesviruses, the (OvHV)IL-10 peptide sequence was highly divergent from that of the host species. The (OvHV)IL-10 gene is unique amongst virus captured genes in that it has precisely retained the original cellular exon structure, having five exons of similar sizes to the cellular counterparts. However, the sizes of the introns are dramatically reduced. The (OvHV)IL-10 protein was shown to be a non-glycosylated, secreted protein of M(r) 21 000 with a signal peptidase cleavage site between amino acids 26 and 27 of the nascent peptide. Functional assays showed that (OvHV)IL-10, in a similar way to ovine IL-10, stimulated mast cell proliferation and inhibited macrophage inflammatory chemokine production. This is the first example of a captured herpesvirus gene retaining the full cellular gene structure.
AB - We have characterized a novel, captured and fully functional viral interleukin (IL)-10 homologue ((OvHV)IL-10) from the gammaherpesvirus ovine herpesvirus 2. Unlike IL-10 homologues from other gammaherpesviruses, the (OvHV)IL-10 peptide sequence was highly divergent from that of the host species. The (OvHV)IL-10 gene is unique amongst virus captured genes in that it has precisely retained the original cellular exon structure, having five exons of similar sizes to the cellular counterparts. However, the sizes of the introns are dramatically reduced. The (OvHV)IL-10 protein was shown to be a non-glycosylated, secreted protein of M(r) 21 000 with a signal peptidase cleavage site between amino acids 26 and 27 of the nascent peptide. Functional assays showed that (OvHV)IL-10, in a similar way to ovine IL-10, stimulated mast cell proliferation and inhibited macrophage inflammatory chemokine production. This is the first example of a captured herpesvirus gene retaining the full cellular gene structure.
KW - Amino Acid Sequence
KW - Animals
KW - Cattle
KW - Cell Line
KW - Exons
KW - Gammaherpesvirinae
KW - Interleukin-10
KW - Mast Cells
KW - Molecular Sequence Data
KW - Proteins
KW - Sequence Analysis, DNA
KW - Sheep
KW - Viral Proteins
U2 - 10.1099/vir.0.2008/001743-0
DO - 10.1099/vir.0.2008/001743-0
M3 - Journal article
C2 - 18796712
VL - 89
SP - 2447
EP - 2455
JO - Journal of General Virology
JF - Journal of General Virology
SN - 0022-1317
IS - 10
ER -