Regulation of chromatin structure
Chromatin is DNA and proteins present inside the chromosomes. The first level of organization, or…
Shubhi Khandelwal
DNA binding proteins, transcription factors
DNA binding proteins help to regulate protein production, cell growth and division, and storing DNA…
Operon Concept, Jacob–Monod Model
The operon concept states that the set of genes that are transcribed in the prokaryotes…
Gene repression in bacteria
Prokaryotic operons are commonly controlled by the binding of repressors to operator regions, thereby preventing…
Integration with nervous system: feedback control
The physiological activity of a hormone depends largely on its concentration within the circulatory system.…
Cellular mechanisms of hormone action
Hormones mediate changes in target cells by binding to specific hormone receptors. In this way,…
DNA methylation
DNA methylation is the addition of the methyl group to cytosine and adenine nucleotides of…
Recognition of self vs. non-self, autoimmune diseases
The antigens present on the cells of the body are considered as self-antigens while the…
Transcriptional regulation
Two types of transcription factors regulate eukaryotic transcription: General transcription factors that bind to the…
Supercoiling
Supercoiling means that DNA is either under-wound (less than one turn of the helix per…