proteins Flashcards

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1
Q

Primary structure of proteins

A

Amino acids are joined by peptide bonds to form polypeptide chains which are sequences of amino acids.

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2
Q

Secondary structure of proteins

A

Polypeptides can be arranged in an alpha helix or beta pleated sheet. An alpha helix is a tight twisted strand where the polypeptides are tightly packed. In a beta pleated sheet the polypeptides are in zig-zag lines. Both contain hydrogen bonds between parts of the chain.

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3
Q

Quaternary structure of proteins

A

Quaternary structure is made up of more than one type of polypeptide and contains a prosthetic group which is a non-protein. An example is haemoglobin as it’s made up of multiple polypeptides.

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4
Q

What monomer are proteins made from

A

Amino acids

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5
Q

Tertiary structure

A

The 3D structure of a protein that is specific to a proteins function

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