PCB 3063 Lecture Notes - Lecture 8: Beta Sheet, Alpha Helix, Transfer Rna
Primary structure
amino acid sequence
Secondary structure
regular folding arrangement of amino acids
ex: alpha helix, beta pleated sheet
Tertiary structure
higher order folding that forms 3D shape
Quaternary structure
orientation of 2+ polypeptides (molecules)
ex: double helix
Hairpin loop
- sequences of nucleotides on the same strand are complementary and pair with each other
- secondary structure
tRNA
aka transfer RNA
- RNA molecule that carries an amino acid to the ribosome
- transfers it to a growing polypeptide chain in translation
rRNA
RNA molecule that is the structural/functional component of the ribosome
mRNA
RNA molecule that carries genetic information for the amino acid sequence of a protein
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Document Summary
Secondary structure regular folding arrangement of amino acids ex: alpha helix, beta pleated sheet. Tertiary structure higher order folding that forms 3d shape. Quaternary structure orientation of 2+ polypeptides (molecules) ex: double helix. Sequences of nucleotides on the same strand are complementary and pair with each other. Rna molecule that carries an amino acid to the ribosome. Transfers it to a growing polypeptide chain in translation rrna. Rna molecule that is the structural/functional component of the ribosome mrna. Rna molecule that carries genetic information for the amino acid sequence of a protein pre-mrna eukaryotic rna molecule that is modified after transcription to become mrna small rna. Plot of biological effectiveness as a function of the wavelength of incident light. H-bond hydrogen bond ex: between the base pairs (at = 2; gc = 3) Solution is heated so double strands separate. Solution is cooled so that strands will anneal. Tracks the change in od260nm (od = optical density)