TABLE 2.
Summary of α2β1, GM1, and N-acylneuraminic acid usage for cell binding and/or infection by sialidase-sensitive (animal) rotaviruses
Virus strain | α2β1 usagea | Untreated cells |
Sialidase-treated cells |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Infectivity reduced by CTBb | Proposed internalization pathwayc | Reduced by Neu5Acα2Me (% at 10 mM) |
Reduced by Neu5Gcα2Me (% at 10 mM) |
Infectivity reduced by a-GM1d | Effect of sialidase on given property |
Infectivity reduced by Neu5Acα2Me | Infectivity reduced by Neu5Gcα2Med | |||||
VP8* boundd | Infectivity | VP8* boundd | Infect | VP8* boundd | Infectivity | |||||||
TFR-41 | − | + | CE | ND | 19d | ND | 0d | ND | ND | Reducedd | −d | − |
CRW-8 | − | − | ND | 41 | 46e | 43 | 66e | ND | ND | Reducede,f | −f | ND |
RRV | + | − | Non-CE | ND | 60g | ND | 40e | − | ND | Reducedh | −d | ND |
NCDV | + | − | ND | 34 | 29e | 41 | 41e | ND | Reduced | Reducedi | −d | + |
Shown in references 8, 15, 18, 32, and 35. In this study, the extent of α2β1 usage was shown not to be affected by sialidase treatment of cells.
Shown by CTB infectivity inhibition in this study for UK, TFR-41, and NCDV and in references 7 and 31 for CRW-8 and RRV. STD NMR analysis showed minimal RRV VP8* binding to a-GM1 (this study).
Data are from references 11 and 13. CE, clathrin-mediated endocytosis; Non-CE, endocytosis independent of clathrin and caveolin; ND, not determined.
Shown in this study.
Shown in this study and reference 38.
Shown in this study and reference 31.