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Tcf3 | Transcription factor E2-alpha; Transcriptional regulator. Involved in the initiation of neuronal differentiation. Heterodimers between TCF3 and tissue-specific basic helix-loop-helix (bHLH) proteins play major roles in determining tissue-specific cell fate during embryogenesis, like muscle or early B- cell differentiation. Dimers bind DNA on E-box motifs: 5'-CANNTG-3'. Binds to the kappa-E2 site in the kappa immunoglobulin gene enhancer. Binds to IEB1 and IEB2, which are short DNA sequences in the insulin gene transcription control region. (653 aa) | ||||
Tdgf1 | Teratocarcinoma-derived growth factor; GPI-anchored cell membrane protein involved in Nodal signaling. Cell-associated Tdgf1 acts as a Nodal coreceptor in cis. Shedding of Tdgf1 by Tmem8a modulates Nodal signaling by allowing soluble Tdgf1 to act as a Nodal coreceptor on other cells. Could play a role in the determination of the epiblastic cells that subsequently give rise to the mesoderm. (171 aa) |