What is an example of a promoter sequence?
Eukaryotic promoter regulatory sequences typically bind proteins called transcription factors that are involved in the formation of the transcriptional complex. An example is the E-box (sequence CACGTG), which binds transcription factors in the basic helix-loop-helix (bHLH) family (e.g. BMAL1-Clock, cMyc).
What are E-box sequences?
“An E-box (Enhancer Box) is a DNA sequence which usually lies upstream of a gene in a promoter region.” This is an image of Dendromus mysticalis, the chestnut climbing mouse.
What is the function of the promoter sequence like the TATA box?
A TATA box is a DNA sequence that indicates where a genetic sequence can be read and decoded. It is a type of promoter sequence, which specifies to other molecules where transcription begins.
What is an exon in DNA?
Listen to pronunciation. (EK-son) The sequence of DNA present in mature messenger RNA, some of which encodes the amino acids of a protein. Most genes have multiple exons with introns between them.
Who discovered MyoD?
Harold M. Weintraub
MyoD, also known as myoblast determination protein 1, is a protein in animals that plays a major role in regulating muscle differentiation. MyoD, which was discovered in the laboratory of Harold M. Weintraub, belongs to a family of proteins known as myogenic regulatory factors (MRFs).
How does exon shuffling occur?
Exon shuffling is a molecular mechanism for the formation of new genes. It is a process through which two or more exons from different genes can be brought together ectopically, or the same exon can be duplicated, to create a new exon-intron structure.
How do you find the 3 UTR sequence?
In most cases, the sequence between the 5’end and the start codon of the longest ORF will be the 5’UTR. The sequence between the stop codon and the poly(A) will be the 3’UTR.
How does the E-box affect gene transcription?
Since then, researchers have established that the E-box affects gene transcription in several eukaryotes and found E-box binding factors that identify E-box consensus sequences. In particular, several experiments have shown that the E-box is an integral part of the transcription-translation feedback loop that comprises the circadian clock .
What is the E-box sequence for creatine kinase?
Investigation of the ChoRE sequence indicated that two half E box motifs are critical for the response to glucose [22]. The muscle creatine kinase gene enhancer contains two regulatory elements (MCK-R and MCK-L) with the consensus E-box sequence (CAnnTG) [23].
What is the E-box motif in PPARgamma?
Both promoters contain a consensus E-box motif that mediates the regulation of the PPARgamma gene by ADD-1 / SREBP-1 and SREBP-2 [27]. USF1 and 2 bound to the E-box motif in the TME and strongly transactivated the PF4 promoter [16].
How many E box motifs are in the myostatin gene upstream region?
Sequence analysis of 1.6 kb of the bovine myostatin gene upstream region revealed that it contains 10 E-box motifs (E1 to E10), arranged in three clusters, and a single MEF2 site [28].