Schematic of MLL-AF9 and deletion mutants. All cDNAs were cloned into
pUHD10B/X, a modified form of the pUHD10S expression vector (29).
MLLΔT contains MLL truncated in the region where translocation
breakpoints in MLL commonly occur. MLL3AT encodes the amino-terminal
410 amino acids of MLL and includes all three AT hook motifs of MLL.
MLL2AT encodes the amino-terminal 312 amino acids of MLL and contains
the two amino-terminal AT hook motifs. All constructs contain an
amino-terminal FLAG epitope tag. AT, AT hook motifs; trx, short regions
of homology to Trithorax; SNL-1 and SNL-2, subnuclear localization
domains 1 and 2 as defined by Yano et al. (33); DMT, DNA
methyltransferase homology region.