WB
H
Transfected Only
40
Rabbit IgG
#O75610
10637
Product Information
Product Usage Information
Application | Dilution |
---|---|
Western Blotting | 1:1000 |
Storage
Specificity / Sensitivity
Species Reactivity:
Human
Species predicted to react based on 100% sequence homology
The antigen sequence used to produce this antibody shares
100% sequence homology with the species listed here, but
reactivity has not been tested or confirmed to work by CST.
Use of this product with these species is not covered under
our
Product Performance Guarantee.
Mouse, Rat, Monkey
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro108 of human lefty1 protein.
Background
Lefty proteins are members of the TGF-β family of cell signaling molecules that are involved in growth and development (1,2). Named for their role in left-right axis determination and their exclusive expression on the left side of the developing mouse embryo, lefty1 and lefty2 contain a cysteine-knot motif that is characteristic of TGF-β related proteins, but lack an alpha-helix and a cysteine residue critical for ligand dimerization (3). Early in vertebrate embryogenesis, lefty represses TGF-β signaling by inhibiting the phosphorylation of Smad2 following activation of the TGF-β receptor (4). Down-regulated very early upon differentiation (5), lefty proteins act as extracellular antagonists of the signaling pathway for Nodal, a TGF-β ligand critical for left-right patterning and formation of the mesoderm and endoderm (6). Similar to other members of the TGF-β superfamily, lefty proproteins undergo cleavage to release a bioactive protein (7). The biologically active 42 kDa lefty precursor and the 28 kDa polypeptide have been shown to induce MAPK activity (7).
- Kingsley, D.M. (1994) Genes Dev 8, 133-46.
- Heldin, C.H. et al. (1997) Nature 390, 465-71.
- Meno, C. et al. (1997) Genes Cells 2, 513-24.
- Ulloa, L. and Tabibzadeh, S. (2001) J Biol Chem 276, 21397-404.
- Besser, D. (2004) J Biol Chem 279, 45076-84.
- Schier, A.F. (2003) Annu Rev Cell Dev Biol 19, 589-621.
- Ulloa, L. et al. (2001) J Biol Chem 276, 21387-96.
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Western Blot Buffer
IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.
Applications Key
WB: Western Blotting
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
Trademarks and Patents
Limited Uses
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