- The Unc93b1 mutation 3d disrupts exogenous antigen presentation and signaling via Toll-like receptors 3, 7 and 9. Tabeta, K., Hoebe, K., Janssen, E.M., Du, X., Georgel, P., Crozat, K., Mudd, S., Mann, N., Sovath, S., Goode, J., Shamel, L., Herskovits, A.A., Portnoy, D.A., Cooke, M., Tarantino, L.M., Wiltshire, T., Steinberg, B.E., Grinstein, S., Beutler, B. Nat. Immunol. (2006)