Secondary Structure – Peptides
Über den Vortrag
Der Vortrag „Secondary Structure – Peptides“ von Kevin Ahern, PhD ist Bestandteil des Kurses „Year 1 – Term 2 – Basic Principles of Medicine II – Endocrinology and Reproduction“.
Quiz zum Vortrag
Which of the four levels of protein organization has a regular repeating structure arising from interactions of nearby amino acids?
- Secondary
- Primary
- Tertiary
- Quaternary
What are the main forces that were described as stabilizing secondary structure?
- Hydrogen bonds
- Covalent bonds
- Disulfide bonds
- Ionic bonds
- Carbon-carbon bonds
What do the protein structures of collagen, keratin, and fibroin (the protein of silk) have in common?
- They do not have a tertiary structure.
- Their structures cannot be predicted from their primary amino acid sequences.
- Hydrogen bonds between carboxyl groups help stabilize their structures above the primary level.
- Their alpha-helix and beta-strand sequences have the same proportions of amino acids.
- Their structures may show forward and reverse turns.
Which of the following amino acids have a high propensity for reverse turns?
- Glycine
- Alanine
- Glutamic acid
- Valine
- Isoleucine
Which of the following statement is FALSE regarding the secondary structure of proteins?
- There are 4 structures used to describe the secondary structure of proteins.
- Alpha helixes and beta-strands were discovered by Linus Pauling.
- In alpha-helixes, hydrogen bonds are formed between carboxyl oxygen and the amine hydrogen.
- Beta-sheets are groups of beta-strands from different parts of a protein.
- Proline and glycine are frequently found in reverse turns.
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Dozent des Vortrages Secondary Structure – Peptides
Kevin Ahern, PhD
Dr. Kevin Ahern is a Professor in the Department of Biochemistry and Biophysics at Oregon State University (OSU), USA.
He obtained his PhD in Biochemistry from Oregon State University. Currently, he teaches courses for health sciences students at OSU.
He is co-author of three Open Educational electronic textbooks on Biochemistry and a Guide to Getting Into Medical School.
Due to his achievements, he earned OSU’s highest teaching recognition, the Elizabeth P. Ritchie Distinguished Professor Award in 2017.
Within Lecturio, Dr. Ahern teaches courses on Biochemistry and on "How to Get into Medical School”.
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I understand very well, thank you Professor Kevin, these help me a lot
My name is Barbara, I'm from Colombia and I really like your videos Mr. Kevin, because I think the content is easy to understand.
