It has not been directly demonstrated that JAG2 binds to and activates NOTCH1 HD (heterodimerization) domain mutants, but NOTCH1 HD domain mutants are expected to respond to JAG2 like they respond to DLL1 (Malecki et al. 2006).
Mitchell, JL, Malecki, MJ, Blacklow, SC, Xu, ML, Sanchez-Irizarry, C, Aster, JC, Histen, G
Gain of function of NOTCH1 HD domain mutants [plasma membrane]
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