Domanda del libro di testo
What is the role of imprinting in human genetic disorders?
799
views
Ch. 19 - Epigenetics
Klug12th EditionConcepts of GeneticsISBN: 9780135564776
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 - Introduction to Genetics17
- Ch. 2 - Mitosis and Meiosis36
- Ch. 3 - Mendelian Genetics51
- Ch. 4 - Extensions of Mendelian Genetics74
- Ch. 5 - Chromosome Mapping in Eukaryotes51
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages46
- Ch. 7 - Sex Determination and Sex Chromosomes33
- Ch. 8 - Chromosome Mutations: Variation in Number and Arrangement40
- Ch. 9 - Extranuclear Inheritance31
- Ch. 10 - DNA Structure and Analysis43
- Ch. 11 - DNA Replication and Recombination44
- Ch. 12 - DNA Organization in Chromosomes30
- Ch. 13 - The Genetic Code and Transcription54
- Ch. 14 - Translation and Proteins47
- Ch. 15 - Gene Mutation, DNA Repair, and Transposition41
- Ch. 16 - Regulation of Gene Expression in Bacteria29
- Ch. 17 - Transcriptional Regulation in Eukaryotes41
- Ch. 18 - Post-transcriptional Regulation in Eukaryotes33
- Ch. 19 - Epigenetics33
- Ch. 20 - Recombinant DNA Technology44
- Ch. 21 - Genomic Analysis36
- Ch. 22 - Applications of Genetic Engineering and Biotechnology36
- Ch. 23 - Developmental Genetics37
- Ch. 24 - Cancer Genetics34
- Ch. 25 - Quantitative Genetics and Multifactorial Traits54
- Ch. 26 - Population and Evolutionary Genetics45
Klug12th EditionConcepts of GeneticsISBN: 9780135564776Non è quello che usi tu?Cambia libro di testo
Capitolo 19, Problema 12
What is the histone code?
Guida verificata passo dopo passo1
The histone code refers to the hypothesis that the transcription of genetic information encoded in DNA is, in part, regulated by chemical modifications to histone proteins, primarily on their N-terminal tails.
Histones are proteins that help package DNA into structural units called nucleosomes, which are the fundamental subunits of chromatin.
These modifications include methylation, acetylation, phosphorylation, ubiquitination, and sumoylation, among others, and they occur on specific amino acid residues of histone proteins.
Each type of modification can influence chromatin structure and function, thereby affecting gene expression by either promoting or repressing transcription.
The 'code' is thought to be a complex language of these modifications that can be read by other proteins to bring about changes in chromatin structure and gene activity.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Histones
Histones are proteins that play a crucial role in the packaging of DNA into a compact, organized structure known as chromatin. They help regulate gene expression by controlling the accessibility of DNA to transcription machinery. Each histone protein can undergo various post-translational modifications, which influence chromatin structure and function.
Video consigliato:
Percorso guidato
07:55
Histone Protein Modifications
Post-Translational Modifications
Post-translational modifications (PTMs) refer to the chemical modifications that occur on proteins after their synthesis. In the context of histones, these modifications include methylation, acetylation, phosphorylation, and ubiquitination. Each type of modification can alter the interaction between histones and DNA, thereby influencing gene expression and chromatin dynamics.
Video consigliato:
Percorso guidato
04:30Post Translational Modifications
Gene Regulation
Gene regulation is the process by which cells control the expression of genes, determining when and how much of a gene product is made. The histone code contributes to gene regulation by providing a complex layer of information through the specific patterns of histone modifications. These patterns can signal whether a gene is active or silenced, thus playing a vital role in cellular function and differentiation.
Video consigliato:
Percorso guidato
09:22Review of Regulation
Pratica correlata
Domanda del libro di testo
What are the functions of lncRNAs in epigenetic regulation? Describe each in detail.
684
views
Domanda del libro di testo
What are the similarities and differences in the two types of ncRNAs involved in epigenetic control of gene expression?
502
views
Domanda del libro di testo
Imprinting disorders do not involve changes in DNA sequence, but only the methylated state of the DNA. Does it seem likely that imprinting disorders could be treated by controlling the maternal environment in some way, perhaps by dietary changes?
475
views
Domanda del libro di testo
What are the differences and similarities among the three classes of monoallelic gene expression?
590
views
Domanda del libro di testo
How do microRNAs regulate epigenetic mechanisms during development?
754
views