Euchromatin (also called " open chromatin ") is a lightly packed form of chromatin (DNA, RNA, and protein) that is enriched in genes, and is often (but not always) under active transcription. Euchromatin stands in contrast to heterochromatin, which is tightly packed and less accessible for transcription. 92% of the human genome is euchromatic. [1]

2019年4月8日 · Euchromatin is a form of chromatin that is lightly packed—as opposed to heterochromatin, which is densely packed. The presence of euchromatin usually reflects that cells are transcriptionally active, i.e. they are actively transcribing DNA to mRNA. Euchromatin is found in the nucleus of eukaryotes and represents more than 90% of the human genome.

2023年8月3日 · Euchromatin is loosely bound nucleosomes and exposed DNA helical sequences that carry active genes accessible for transcription by polymerases (DNA and RNA) and other regulatory protein complexes. The presence of euchromatin in a nucleus describes the function of transcriptionally active cells.

The meaning of EUCHROMATIN is the part of chromatin that is genetically active and is largely composed of genes.

In this review, we discuss distinct chromatin factors and molecular complexes that constitute euchromatin—open chromatin structure associated with active transcription; heterochromatin—less accessible chromatin associated with silencing; centromeric chromatin—the site of spindle binding in chromosome segregation.

2023年8月3日 · Euchromatin is a more lightly packed DNA that is characterized by less intense staining and DNA sequences that are transcriptionally active or might become transcriptionally …

2017年3月24日 · Euchromatin is the loosely packed form of DNA, found in the inner body of the nucleus. Heterochromatin is the tightly packed form of DNA, found in the periphery of the nucleus. Around 90% of the human genome consists of euchromatin.

Euchromatin refers to the less tightly coiled DNA that allows transcription factors and chromatin remodelers access, enabling transcription to occur. It is typically located away from the nuclear envelope. You might find these chapters and articles relevant to this topic. Ales Cvekl, Melinda K. Duncan, in Progress in Retinal and Eye Research, 2007.

2023年11月30日 · Traditionally, interphase chromatin is classified as either euchromatin or heterochromatin, depending on its level of compaction. Euchromatin has a less compact structure, and is often described as a 11 nm fiber that has the appearance of ‘beads on a string’ where the beads represent nucleosomes and the string represents DNA.

Heterochromatin and euchromatin are two major categories of chromatin higher order structure. Heterochromatin has condensed chromatin structure and is inactive for transcription, while euchromatin has loose chromatin structure and active for transcription.