Sequence analysis of 12 genome segments of mud crab reovirus (MCRV).

Mud crab reovirus (MCRV) is the causative agent of a serious disease with high mortality in cultured mud crab (Scylla serrata). This study sequenced and analyzed 12 genome segments of MCRV. The 12 genome segments had a total length of 24.

Litopenaeus vannamei tumor necrosis factor receptor-associated factor 6 (TRAF6) responds to Vibrio alginolyticus and white spot syndrome virus (WSSV) infection and activates antimicrobial peptide genes.

Tumor necrosis factor receptor (TNFR)-associated factor 6 (TRAF6) is a key signaling adaptor protein not only for the TNFR superfamily but also for the Interleukin-1 receptor/Toll-like receptor (IL-1/TLR) superfamily. To investigate TRAF6 function in invertebrate innate immune responses, Litopenaeus vannamei TRAF6 (LvTRAF6) was identified and characterized. The full-length cDNA of LvTRAF6 is 2823bp long, with an open reading frame (ORF) encoding a putative protein of 594 amino acids, including a RING-type Zinc finger, two TRAF-type Zinc fingers, a coiled-coil region, and a meprin and TRAF homology (MATH) domain.

An immune deficiency homolog from the white shrimp, Litopenaeus vannamei, activates antimicrobial peptide genes.

Invertebrates rely on innate immunity as the first line defense against microbes. In Drosophila, the inducible antimicrobial peptides (AMPs) regulated by the Toll and immune deficiency (Imd) pathways are important effectors in innate immunity. Here we report an immune deficiency homolog (LvIMD) from the white shrimp, Litopenaeus vannamei.