| basic FUNCTION
| involved in the development of the CNS, craniofacial structure, lung, trachea and oesophagus |
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more generatly acting both as an activator and a repressor as does CI (cubitus interruptus) in sonic hedgehog signaling, and regulating digit number and identity |
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inducing GLT1 transcription in response to SHH |
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activating BMP4 and BMP7 gene promoters |
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GLI2 and GLI3 collectively mediate all major aspects of IHH function during endochondral skeletal development  |
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acting as a downstream mediator of the Sonic hedgehog signal-transduction pathway, essential for early development and playing a role in cell growth, specialization, and patterning of structures such as the brain and limbs  |
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required for maintaining the cortical progenitors in active cell cycle, suggesting that cells may acquire differentiated status as they turn off GLI3 expression during neurogenesis  |
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a GLI3 proteolytic processing is involved in primary cilia control telencephalic patterning and morphogenesis  |