Histone methylation - Study guides, Class notes & Summaries

19S - regulatory particle of proteasome 2 Categories of Epigenetics - DNA methylatioin and histone modification 20S - core particle of proteasome 26S proteasome - inhibited in sporadic parkinsonism 3 groups of Bcl-2 family proteins - 1. Group I - Anti-apoptitic 2. Group II - Inducers 3. Group III - Potentiate 3 key molecules of apoptosis - 1. Bcl-2 family proteins 2. Apaf-1 3. caspases 3 metabolic pathways that regulate aging - 1. Dietary restrictions 2. Insulin/Insulin-like Growth Fa...

CELLULAR BIO FINAL STUDY GUIDE Qs&As 2024 A+ gene expression - ANS-processes that control the turning on or turning off of a gene histone modification can - ANS-loosen chromatin and promote transcription DNA methylation does what - ANS-condenses chromatin, inhibits transcription, can be passed via epigenetic inheritance post transcriptional regulation allows - ANS-cells to fine tune gene expression in response to environmental changes prokaryotic gene regulation - ANS-mostly at transcri...

activators - TFs that increase the levels of transcription initiation Adaptive mutations - evolutionary change and adaptation to new environments, stressful conditions darwins birbs AP - activator proteins ARE - AP2 response elements Base analogs (chem induced - 5-bromouracil resembles thymine, except that it has bromine atom in place of methyl on 5' C base excision repair (BER) - repairs damaged base by using AP endonuclease to cleave damage on 5' side and DNA polymerase add new base...

USMLE Step 1- Biochemistry Exam Questions & Answers 2023/2024 Histones are rich in which 2 amino acids? - ANSWER-Lysine Arginine What histone protein is responsible for binding to the nucleosome and to the "linker" DNA thereby stabilizing the chromatin fiber? - ANSWER-H1 When does DNA and histone synthesis occur in the cell cycle? - ANSWER-S-phase Will the following be increased or decreased or neutral in heterochromatin? methylation acetylation - ANSWER-methylation increased ...

Nucleic Acid grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide double stranded DNA most energetically favorable state for DNA Purines double-ring structure Adenine (A) + Guanine (G) Pyrimidine single-ring structure Uracil (U)+ Cytosine Messenger RNA (mRNA) -template for all protein synthesis -encode all information necessary to produce proteins Heterogeneous nuclear RNA primary product o...

1) The nucleotide sequence of the attenuator region in the leader of the trp mRNA - a) Contains features of a transcription termination site Depurination - the loss of a purine base from a nucleotide Deamination - the removal of an amino group from an organism, particularly from an amino acid attenuator region - region of RNA sequence that forms an alternate secondary structures that govern the level of transcription of attenuated operons. Transcription factors and other regulatory p...

Chapter 1 correct answers Fundamentals of DNA, Chromosomes, and Cells Structure and Function of Nucleic Acids correct answers Objectives: Fluently use appropriate vocabulary to describe the structure of nucleic acids Diagram and describe the structure of DNA & RNA molecules found in nature Articulate the organization of DNA in chromosomes Describe the role of the cell cycle and DNA replication in maintaining genomic stability Nucleic acids correct answers genetic material of cel...

USMLE Biochemistry Exam Questions with Correct Answers Heterochromatin - ANSWER Highly Condensed DNA Transcriptionally inactive Ex. Barr bodies (inactivated X chromosomes) Euchromatin - ANSWER Less condensed DNA Transcriptionally active DNA Methylation - ANSWER Occurs at *CpG Islands* to repress transcription 'CpG Methylation Makes DNA MUTE' Template strand *cytosine* and *adenine* are methylated, which allow mismatch repair enzymes to distingu...

USMLE Biochemistry Exam Questions with Correct Answers Heterochromatin - ANSWER Highly Condensed DNA Transcriptionally inactive Ex. Barr bodies (inactivated X chromosomes) Euchromatin - ANSWER Less condensed DNA Transcriptionally active DNA Methylation - ANSWER Occurs at *CpG Islands* to repress transcription 'CpG Methylation Makes DNA MUTE' Template strand *cytosine* and *adenine* are methylated, which allow mismatch repair enzymes to distingu...

This document provides a summary about the basics of cell biology. It is a brief summary about the different cell compartments, such as the cell membrane, nucleus, nucleolus, ER, Golgi apparatus, mitochondria, lysosomes, transport vesicles, cytoskeleton, chloroplasts, the cytosol, ATP, Ion motive forces, Glycolysis, Pyruvate oxidation, Citric acid cycle, Oxidative phosphorylation, Respiratory chain/electron transport chain, ROS formation, ATP as a drug target, ATP in synapses, Warburg effect, P5...