College of Fishery;
Guangdong Ocean University;
Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal;
Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes;
Zhanjiang 524088;
China;
National Engineering Research Center for Non-Food Biorefinery;
State Key Laboratory of Non-Food Biomass and Enzyme Technology;
Guangxi Academy of Sciences;
Nanning 536000;
China;
Key Laboratory of Experimental Marine Biology;
Institute of Oceanology;
Chinese Academy of Sciences;
Qingdao 266071;
China;
Laboratory for Marine Biology and Biotechnology;
Qingdao National Laboratory for Marine Science and Techno-logy;
Qingdao 266237;
China;
Research Unit of Excellence for Tropical Fisheries and Technology;
Division of Fisheries;
Department of Agricultural Technology;
Faculty of Technology;
Mahasarakham University;
Kantarawichai;
Mahasarakham;
Thailand;
Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry;
Guangxi Beibu Gulf Marine Research Center;
Guangxi Academy of Sciences;
Nanning 536000;
China;
Streptococcus agalactiae; RbsB protein; circular dichroism(CD)spectroscopy; isothermal titration calorimetry200(ITC200); molecular docking;