Protein Structure Flashcards by Rachel Wheeler

Q

A peptide bond forms between…

A

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Q

what type of reaction forms to create a peptide bond

A

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Q

Asymmetric Bond:

A

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Q

Peptide Nomenclature I

A

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Q

Peptides/Oligopeptides

A

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Q

Polypeptide

A

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Q

Protein

A

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Q

Amino Acids and Charge

A

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Q

Primary Structure

A

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Q

Peptide bonds can be rigid:

A

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Q

However in the other resonance conformation there is…

A

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Q

Peptide bonds are planar:

A

whenthe nitrogen delocalizes the electrons to the carbonyl group this restricts rotation making them planar

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Q

The Rotation of Polypeptide Backbones is Limited

A

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Q

Polypeptide Bonds: H bonding

A

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Q

Secondary Structure

A

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Q

Alpha Helix:

A

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Q

Proline is not found in the…

A

Q

alpha helix..left or right handed structure

A

Q

Every turn in an alpha helix group is … amino acid residues:

A

Q

Atoms in the polypeptide backbone can interact with eachother through…

A

Q

Side chains of the amino acid are not involved in…

A

Q

Beta sheets are stabilized by hydrogen bonds between…

A

Q

beta sheets: parallel

A

Q

Antiparallel

A

Q

Side chains point above or below the…

A

Q

ß-sheets are often drawn as arrows

A

Q

Forces that stabilize alpha helices:

A

Q

Forces that stabilize beta sheets:

A

Q

Irregular Structures:

A

Q

Tertiary Structure:

A

Q

Tertiary Structure: Fibrous Proteins

A

Q

Globular proteins are stabilized by…and can be broken by…

A

Q

lon Pairs/Salt Bridges

A

Q

Positive Charges

A

Q

Negative Charges

A

Q

Disulfide Bonds/Bridges

A

Q

Domain

A

Q

Motif

A

Q

Prosthetic Groups

A

Q

Quaternary Structure

A