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Understanding Protein Synthesis Study Guide

A guide to the fundamental processes of molecular biology, covering DNA transcription, RNA processing, mRNA translation, and the genetic code. Learn how genetic information is converted into functional proteins.

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From DNA to Protein: Gene Expression

Mechanisms of DNA Transcription

RNA polymerase catalyzes the formation of an RNA complement to a DNA template strand through initiation, elongation, and termination processes.

  • RNA polymerase
  • Transcription initiation
  • Transcription elongation
  • Transcription termination
  • Template strand
  • Coding strand
  • Sigma factor
  • Promoter
  • Terminator
  • Bacterial RNA polymerase
  • Eukaryotic RNA polymerases
  • General transcription factors
  • TATA box
  • TATA-binding protein (TBP)
  • Nucleosomes
  • Chromatin structure
  • Elongation factors

Eukaryotic RNA Processing and Gene Expression

Eukaryotic RNAs are transcribed and processed simultaneously in the nucleus through capping, polyadenylation, and RNA splicing.

  • polyadenylation
  • RNA splicing
  • exons
  • introns
  • spliceosome
  • snRNPs
  • alternative RNA splicing
  • nuclear export
  • transcription
  • gene expression
  • RNA polymerase II
  • lariat structure

The Genetic Code and tRNA Adaptors

mRNA Translation and the Genetic Code

The nucleotide sequence of an mRNA is translated into the amino acid sequence of a protein via the genetic code using codons and tRNA molecules.

  • genetic code
  • codon
  • stop codons
  • initiation codon
  • wobble effect
  • reading frames
  • anticodon
  • aminoacyl-tRNA synthetase
  • charging
  • charged tRNA

Ribosome Structure and the Translation Process

Ribosome Structure and Protein Translation

Ribosomes are large complexes of RNAs and proteins that facilitate protein synthesis through translation initiation, elongation, and termination.

  • Ribosome structure
  • Eukaryotic and prokaryotic ribosomes
  • tRNA binding sites (A, P, and E sites)
  • Translation initiation
  • Translation elongation
  • Translation termination
  • Stop codons
  • Polyribosomes
  • Post-translational modifications
  • Ubiquitin-Proteasome Pathway
  • Protein degradation

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