Abstract
The Y-box proteins are a family of highly conserved nucleic acid binding proteins. In this report we have identified a new member, YB-1 from turbot (Scophthalmus maximus) spleen cDNA library. The full-length cDNA sequence of turbot YB-1 was obtained and then the expression at transcriptional level was researched by qRT-PCR. In normal organs, the expression of YB-1 was higher in liver, brain, gill and heart, respectively. YB-1 had the highest expression level at gastrula stage during the early stages of embryo development. In the liver, kidney and spleen, the turbot YB-1 expression level was the highest at 72 h after challenge with lymphocystis disease virus (LCDV) and the highest at 12 h after challenge with Vibrio anguillarum (V. anguillarum). Furthermore, the expression of turbot YB-1 also distinctly increased in turbot kidney cells (TK) at 24 h after challenge with V. anguillarum and LCDV. These results indicated that the turbot YB-1 protein may play a significant role in the immune response of turbot.
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