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    Mol Cell Biol. 2008 Mar;28(5):1565-72. Epub 2007 Dec 26.

    Sizn1 is a novel protein that functions as a transcriptional coactivator of bone morphogenic protein signaling.

    Cho G, Lim Y, Zand D, Golden JA.

    Children's Hospital of Philadelphia, ARC/516h, 3400 Civic Center Blvd., Philadelphia, PA 19104, USA.

    Bone morphogenic proteins (BMPs) play pleotrophic roles in nervous system development, and their signaling is highly regulated at virtually every step in the pathway. We have cloned a novel gene, Sizn1 (Smad-interacting zinc finger protein), which functions as a transcriptional coactivator of BMP signaling. It positively modulates BMP signaling by interacting with Smad family members and associating with CBP in the transcription complex. Sizn1 is expressed in the ventral embryonic forebrain, where, as we will show, it contributes to BMP-dependent, cholinergic-neuron-specific gene expression. These data indicate that Sizn1 is a positive modulator of BMP signaling and provide further insight into how BMP signaling can be modulated in neuronal progenitor subsets to influence cell-type-specific gene expression and development.

    PMID: 18160706 [PubMed - indexed for MEDLINE]

    PMCID: 2258788

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