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Why Is Cbp Important

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CREBBP and its significance

CyclicAMP response element binding protein (CREBBP) is a gene located on chromosome 16 at the 16p13.3 locus [2][9]. CREBBP (also known as CBP) is a regulatory protein that is essential in embryonic development, cell differentiation, control of growth, and homeostasis. It is a multi-domain protein, co-activating [10] with several dozen different transcription factors (TFs). The most significant TF encoded by CREBBP is the CREB protein itself.

CREB protein
CREB protein is a TF localized in the nucleus that increases or decreases the transcription of a downstream gene [6]. The ability of CREB to regulate the transcription of genes is primarily because of its histone acetyltransferase activity [5]. It is a particularly important protein involved in long-term memory storage, formation of spatial memory, and has therapeutic potential for …show more content…

Out of these 31 exons, there are exons known as CREB domains that manage different TFs. Domains include: nuclear receptor interaction domain (NRID), transactivation zinc domains (TAZ1&2-cystein regions), CREB and MYB interaction domain (KIX), the bromo domain (bromo), histone acetyltransferase domain (HAT), and nuclear coactivator binding domain (NCBD), essentially in that order on the CREBBP gene sequence. Mutations can occur at any of these exons, but the most notable mutations occur at the HAT domain. This is due largely because when the protein is not acetylated the promoter site cannot be accessed by TFs [5]. This results in essential proteins for development not being produced, thus causing developmental anomalies. One such anomaly is the Rubenstein-Taybi syndrome (RTS), which is associated directly with CREBBP mutations [8]. Mutations in CREBBP are also associated with Huntington’s disease and acute myeloid leukemia, due to chromosomal

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