FIG. 1.
NOTCH1 expression constructs. (A) Schematic representation of the human NOTCH1 receptor. NEC, NOTCH1 extracellular subunit; NTM, NOTCH1 transmembrane subunit; LNR, domain comprising the three LIN12/Notch repeats; HD, heterodimerization domain; HD-N, N-terminal region of the HD domain; HD-C, C-terminal region of the HD domain; TM, transmembrane segment; ICN, intracellular NOTCH1; RAM, RAM domain; ANK, ankyrin repeat domain; TAD, transactivation domain; PEST, PEST domain; S1, furin cleavage site. The 16 leukemia-derived HD domain mutations described in this article are shown. (B) NOTCH1 polypeptides used in these studies.