Key Specifications Table
|Species Reactivity||Key Applications||Host||Format||Antibody Type|
|Presentation||Purified immunoglobulin. Provided as solution in phosphate buffered saline with 0.08% sodium azide.|
|Application||Anti-LEF-1 Antibody, all isoforms, clone 1C3.1D10 is an antibody against LEF-1 for use in WB.|
|Application Notes||Western blot
Optimal working dilutions must be determined by end user.
|Safety Information according to GHS|
|Storage and Shipping Information|
|Storage Conditions||Maintain at -20°C in undiluted aliquots for up to 12 months from date of receipt. Avoid repeated freeze/thaw cycles.|
|Material Size||100 µg|
|MOUSE ANTI- LEF1 (ALL ISOFORMS) MONOCLONAL ANTIBODY - 2287207||2287207|
|Reference overview||Pub Med ID|
|LEF-1, a nuclear factor coordinating signaling inputs from wingless and decapentaplegic. |
Riese, J, et al.
Cell, 88: 777-87 (1997) 1997
wingless and decapentaplegic signal during endoderm induction in Drosophila to regulate expression of the homeotic gene Ultrabithorax. Here, we define a minimal wingless response sequence in the midgut enhancer of Ultrabithorax. We show that this sequence is recognized by the murine transcription factor LEF-1 (lymphocyte enhancer binding factor 1) in a ternary complex with armadillo protein, the cytoplasmic target of the wingless signaling pathway. In stable transformants, transcriptional stimulation of the Ultrabithorax enhancer by LEF-1 depends on armadillo. Furthermore, overexpression of LEF-1 bypasses the need for wingless signaling and causes phenotypes in the midgut, notum, and wing that mimic wingless hyperstimulation. Finally, efficient transcriptional stimulation by LEF-1 in the midgut depends also on the decapentaplegic response sequence and is limited spatially by decapentaplegic signaling. Thus, LEF-1 coordinates inputs from multiple positional signals, consistent with its architectural role in regulating the assembly of multiprotein enhancer complexes.
|LEF-1 contains an activation domain that stimulates transcription only in a specific context of factor-binding sites. |
Giese, K and Grosschedl, R
EMBO J., 12: 4667-76 (1993) 1993
Lymphoid enhancer factor 1 (LEF-1) is a member of the high mobility group (HMG) family of proteins and participates in the regulation of the T cell receptor (TCR) alpha enhancer. We have previously shown that DNA binding by the HMG domain of LEF-1 induces a sharp bend in the DNA helix. Together with the dependence of LEF-1 on other factor-binding sites to regulate gene expression, DNA bending induced by the HMG domain suggested an 'architectural' role for LEF-1. In this study, we performed experiments to distinguish between a model in which the HMG domain is the only functional determinant of LEF-1 and a model in which additional domains of LEF-1 are involved in the regulation of gene expression. First, we show that the HMG domain alone is not sufficient to stimulate TCR alpha enhancer function. Second, we replaced the HMG domain of LEF-1 with the DNA-binding domain of the bacterial repressor LexA, which binds a specific nucleotide sequence without inducing a sharp bend in the DNA helix. The chimeric LEF-LexA protein increased the activity of a TCR alpha enhancer in which the LEF-1-binding site had been replaced with a LexA recognition sequence. Transcriptional stimulation by LEF-LexA, however, was less efficient than that observed with endogenous LEF-1. The LEF-LexA-mediated activation of gene expression was dependent upon an amino-terminal region of LEF-1 and a specific context of factor-binding sites in the TCR alpha enhancer. Neither multimerized LexA-binding sites, nor TCR alpha enhancers with altered spatial arrangements of factor-binding sites, were functional for regulation by LEF-LexA. Together, these data suggest that an aminoterminal region in LEF-1 contributes to the context-dependent regulation of the TCR alpha enhancer by LEF-1, presumably by interacting with other enhancer-bound proteins.
|MOUSE ANTI- LEF1 (ALL ISOFORMS) MONOCLONAL ANTIBODY|
|Reprogramming Cell Fate and Function Novel Strategies for iPSC Generation, Characterization, and Differentiation|