Screening and purification of NanB sialidase from Pasteurella multocida with activity in hydrolyzing sialic acid Neu5Acα(2–6)Gal and Neu5Acα(2–3)Gal

• Published in: Scientific reports Vol. 12; no. 1; p. 9425
• Main Authors: Nugroho, Christian Marco Hadi, Kurnia, Ryan Septa, Tarigan, Simson, Silaen, Otto Sahat Martua, Triwidyaningtyas, Silvia, Wibawan, I. Wayan Teguh, Natalia, Lily, Takdir, Andi Khomeini, Soebandrio, Amin
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 08.06.2022; Nature Publishing Group; Nature Portfolio
• Subjects: 631/154; 631/326; 631/337; Antiviral activity; Antiviral agents; Bacteria; Binding sites; Cell surface; Drug dosages; Erythrocytes; Genes; Humanities and Social Sciences; Infections; Influenza; Ligands; multidisciplinary; Pasteurella multocida; Proteins; Science; Science (multidisciplinary); Veterinary medicine; Viral infections; Viruses
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-022-13635-x

Study on sialidases as antiviral agents has been widely performed, but many types of sialidase have not been tested for their antiviral activity. Pasteurella multocida NanB sialidase is one such sialidase that has never been isolated for further research. In this study, the activity of NanB sialidase was investigated in silico by docking the NanB sialidase of Pasteurella multocida to the Neu5Acα(2–6)Gal and Neu5Acα(2–3)Gal ligands. Additionally, some local isolates of Pasteurella multocida , which had the NanB gene were screened, and the proteins were isolated for further testing regarding their activity in hydrolyzing Neu5Acα(2–6)Gal and Neu5Acα(2–3)Gal. Silico studies showed that the NanB sialidase possesses an exceptional affinity towards forming a protein–ligand complex with Neu5Acα(2–6)Gal and Neu5Acα(2–3)Gal. NanB sialidase of Pasteurella multocida B018 at 0.129 U/mL and 0.258 U/mL doses can hydrolyze Neu5Acα(2–6)Gal and Neu5Acα(2–3)Gal better than other doses. In addition, those doses can inhibit effectively H9N2 viral binding to red blood cells. This study suggested that the NanB sialidase of Pasteurella multocida B018 has a potent antiviral activity because can hydrolyze sialic acid on red blood cells surface and inhibit the H9N2 viral binding to the cells.