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Structural highlights

Function

[CRTC2_HUMAN] Transcriptional coactivator for CREB1 which activates transcription through both consensus and variant cAMP response element (CRE) sites. Acts as a coactivator, in the SIK/TORC signaling pathway, being active when dephosphorylated and acts independently of CREB1 'Ser-133' phosphorylation. Enhances the interaction of CREB1 with TAF4. Regulates gluconeogenesis as a component of the LKB1/AMPK/TORC2 signaling pathway. Regulates the expression of specific genes such as the steroidogenic gene, StAR. Potent coactivator of PPARGC1A and inducer of mitochondrial biogenesis in muscle cells. Also coactivator for TAX activation of the human T-cell leukemia virus type 1 (HTLV-1) long terminal repeats (LTR).^{[1] [2] [3] [4] [5] [6] [7]}

References

1. ↑ Iourgenko V, Zhang W, Mickanin C, Daly I, Jiang C, Hexham JM, Orth AP, Miraglia L, Meltzer J, Garza D, Chirn GW, McWhinnie E, Cohen D, Skelton J, Terry R, Yu Y, Bodian D, Buxton FP, Zhu J, Song C, Labow MA. Identification of a family of cAMP response element-binding protein coactivators by genome-scale functional analysis in mammalian cells. Proc Natl Acad Sci U S A. 2003 Oct 14;100(21):12147-52. Epub 2003 Sep 23. PMID:14506290 doi:http://dx.doi.org/10.1073/pnas.1932773100
2. ↑ Conkright MD, Canettieri G, Screaton R, Guzman E, Miraglia L, Hogenesch JB, Montminy M. TORCs: transducers of regulated CREB activity. Mol Cell. 2003 Aug;12(2):413-23. PMID:14536081
3. ↑ Screaton RA, Conkright MD, Katoh Y, Best JL, Canettieri G, Jeffries S, Guzman E, Niessen S, Yates JR 3rd, Takemori H, Okamoto M, Montminy M. The CREB coactivator TORC2 functions as a calcium- and cAMP-sensitive coincidence detector. Cell. 2004 Oct 1;119(1):61-74. PMID:15454081 doi:http://dx.doi.org/10.1016/j.cell.2004.09.015
4. ↑ Siu YT, Chin KT, Siu KL, Yee Wai Choy E, Jeang KT, Jin DY. TORC1 and TORC2 coactivators are required for tax activation of the human T-cell leukemia virus type 1 long terminal repeats. J Virol. 2006 Jul;80(14):7052-9. PMID:16809310 doi:http://dx.doi.org/10.1128/JVI.00103-06
5. ↑ Katoh Y, Takemori H, Lin XZ, Tamura M, Muraoka M, Satoh T, Tsuchiya Y, Min L, Doi J, Miyauchi A, Witters LA, Nakamura H, Okamoto M. Silencing the constitutive active transcription factor CREB by the LKB1-SIK signaling cascade. FEBS J. 2006 Jun;273(12):2730-48. PMID:16817901 doi:http://dx.doi.org/EJB5291
6. ↑ Wu Z, Huang X, Feng Y, Handschin C, Feng Y, Gullicksen PS, Bare O, Labow M, Spiegelman B, Stevenson SC. Transducer of regulated CREB-binding proteins (TORCs) induce PGC-1alpha transcription and mitochondrial biogenesis in muscle cells. Proc Natl Acad Sci U S A. 2006 Sep 26;103(39):14379-84. Epub 2006 Sep 15. PMID:16980408 doi:http://dx.doi.org/10.1073/pnas.0606714103
7. ↑ Takemori H, Kanematsu M, Kajimura J, Hatano O, Katoh Y, Lin XZ, Min L, Yamazaki T, Doi J, Okamoto M. Dephosphorylation of TORC initiates expression of the StAR gene. Mol Cell Endocrinol. 2007 Feb;265-266:196-204. Epub 2007 Jan 8. PMID:17210223 doi:http://dx.doi.org/S0303-7207(06)00575-2