ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (11): 2486-2495.doi: 10.11843/j.issn.0366-6964.2018.11.021

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Prediction and Identification of Nuclear Localization Signal of Chicken Matrin 3

DENG Shan-shan1, GAO Hong-bo1,2, YUAN Chao1,2, ZHAO Jia-fu1,2, NI Meng-meng1,2, DUAN Zhi-qiang1,2*, JI Xin-qin1,2*   

  1. 1. College of Animal Sciences, Guizhou University, Guiyang 550025, China;
    2. Key Laboratory of Animal Genetics, Breeding and Reproduction in Plateau Mountainous Region of Ministry of Education, Guizhou University, Guiyang 550025, China
  • Received:2018-04-26 Online:2018-11-23 Published:2018-11-23

Abstract:

This study aimed to predict and identify the nuclear localization signal (NLS) of chicken matrin 3 (MATR3). The putative NLS (pNLS) in chicken MATR3 was predicted by the online NLS prediction software. The recombinant plasmids of chicken MATR3 with the pNLS deletion were constructed and then transfected into cells. The subcellular localization of the pNLS deletants was observed and analyzed to determine the NLS of chicken MATR3. The recombinant plasmids expressing the deletion of basic amino acids close to NLS were also constructed to examine their roles in the nuclear localization of chicken MATR3. In addition, the conservation analysis and nuclear import ability of chicken MATR3 NLS were investigated. The results showed that there were four pNLS existed in chicken MATR3, and the deletion of pNLS2 (596PSDKKSK602) disrupted the nuclear localization of chicken MATR3. In addition, the constructed recombinant plasmids expressing the deletion of basic amino acids close to NLS were transfected into cells, and the subcellular localization of the recombinant proteins indicated that the adjacent basic amino acids of NLS did not participate in the NLS-mediated nuclear localization of chicken MATR3. Moreover, we also found that the NLS motif in MATR3 protein were conserved among different species, and also had the same nuclear import ability as the NLS of SV40 large T antigen. One highly conservative NLS (596PSDKSK602) is present in chicken MATR3, and its adjacent basic amino acids do not participate in the nuclear localization of MATR3 protein.

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