proteins Flashcards

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1
Q

alpha helix (protein)

A

An organised folded secondary structure of proteins

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2
Q

Beta-pleated sheet (protein)

A

An organised folded secondary structure of proteins

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3
Q

Carboxyl group (amino acid)

A

The functional group on amino acid molecules that contains a hydroxyl group (OH) and an oxygen double-bonded to a carbon atom.

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4
Q

Condensation reaction

A

A reaction where two monomers join to form a larger molecule, producing water as a by-product.

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5
Q

Peptide bond

A

The chemical bond linking two amino acids.

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6
Q

Polypeptide

A

A long chain of amino acids. Proteins can be made of one or many polypeptides.

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7
Q

Primary structure - protein

A

The first level of protein structure, which refers to the sequence of amino acids in a polypeptide chain.

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8
Q

Quarternary structure - protein

A

The level of protein structure where multiple polypeptide chains bond together, or other non-protein groups are added to form a fully functional protein.

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9
Q

R-group

A

The variable portion of an amino acid molecule. It can be one of twenty variations and determines the identity of the amino acid.

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10
Q

Random coil - protein

A

An irregular secondary structure of proteins that is neither an alpha helix nor a beta-pleated sheet.

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11
Q

Secondary structure

A

The level of protein structure where the amino acid chain forms either alpha-helices, beta-pleated sheets, or random coils.

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