Chromatin Remodeling Complex: slide the nucleosome to a different location or eject it from the DNA or replace it with a new nucleosome that contains a variant histone subunit. … On contrary, histone acetylation relaxes chromatin condensation and exposes DNA for TF binding, leading to increase gene expression.
How can chromatin remodeling complexes change chromatin structure quizlet?
Briefly describe 3 ways that ATP-dependent chromatin remodeling complexes may change chromatin structure. ATP-dependent chromatin remodeling may effect position of nucleosomes, evict histones, and may replace histones with histone variants. The addition of methyl groups to bases of DNA after DNA synthesis.
How does methylation affect gene expression?
DNA methylation regulates gene expression by recruiting proteins involved in gene repression or by inhibiting the binding of transcription factor(s) to DNA. … As a consequence, differentiated cells develop a stable and unique DNA methylation pattern that regulates tissue-specific gene transcription.
What is the function of chromatin remodeling complexes quizlet?
Together with similar modifications such as DNA methylation it is part of the epigenetic code. Chromatin Remodeling Complex: slide the nucleosome to a different location or eject it from the DNA or replace it with a new nucleosome that contains a variant histone subunit.
What is the function of ATP dependent chromatin remodeling complexes?
ATP-dependent chromatin remodeling is performed by enzymes—chromatin remodeling complexes. The united activity of these enzymes forms the dynamic properties of chromatin during different nuclear processes such as transcription, replication, DNA repair, homological recombination, and chromatin assembly.
What do ATP dependent chromatin remodelers do to nucleosomes?
ATP dependent remodeling complexes mobilize nucleosomes along DNA, promote the exchange of histones, or completely displace nucleosomes from DNA. These remodeling complexes are often categorized based on the domain organization of their catalytic subunit.
What factors regulate the expression of certain genes?
Eukaryotic gene expression is regulated during transcription and RNA processing, which take place in the nucleus, and during protein translation, which takes place in the cytoplasm. Further regulation may occur through post-translational modifications of proteins.
How does chromatin regulate gene expression?
In eukaryotes, the tight or loose packaging of the genes in chromatin (DNA plus specific proteins) can control whether the genes can be expressed to form their encoded product. DNA itself can be methylation and that also regulates gene expression, generally to turn off the gene. …
Which of the following can regulate gene expression in eukaryotes?
Answer Expert Verified. Transcription factor is what can regulate gene expression in eukaryotes.