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International Journal of Biological Macromolecules 2018-May

A small heat shock protein 21 (sHSP21) mediates immune responses in Chinese oak silkworm Antheraea pernyi.

Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
Saite tiek saglabāta starpliktuvē
Qiu-Ning Liu
Yu Liu
Zhao-Zhe Xin
Xiao-Yu Zhu
Bao-Ming Ge
Chao-Feng Li
Dong Wang
Xun-Guang Bian
Li Yang
Li Chen

Atslēgvārdi

Abstrakts

Small heat shock proteins (sHSPs) are conserved among insects and play an important role in the regulation of many biological processes, including temperature stress, abiotic stress, immune responses, metamorphosis, and embryo development. Antheraea pernyi is an economically valuable silk-producing moth and source of insect food containing high-quality protein. The aim of this study was to quantify expression of the ApsHSP21 gene in response to pathogen-associated molecular patterns (PAMPs) and nucleopolyhedrovirus (NPV) challenge. The deduced ApsHSP21 protein sequence consists of 186 residues with a calculated molecular mass of 21.0 kDa and an isoelectronic point (pI) of 6.63. The protein contains a conserved α-crystallin domain (ACD), and includes two casein kinase II phosphorylation sites, a protein kinase C phosphorylation site, two tyrosine kinase phosphorylation sites, and various polypeptide binding sites. Phylogenetic analysis revealed that ApsHSP21 is closely related to homologs from other insects. Real-time quantitative reverse transcription PCR (qRT-PCR) analysis revealed that expression of ApsHSP21 was significantly up-regulated at different timepoints following simulated pathogen challenge with lipopolysaccharide (LPS), peptidoglycan (PGN), glucan, and NPV. The results suggest sHSP21 is involved in innate immune responses in A. pernyi.

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