proteins Flashcards
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what is the structure of a protein
draw it
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nitrate groupNH2
H
C
R
=O H
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what is a polypeptide
a molecule formed by the condensation of many amino acids
25
what is the tertary structure of a protein
the 3d shape of a single polypeptide chain heald together by interactions in the r groups these include disulphate bridges, hydrogen bonds and ionic bonds`
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What is the role of the 'R group' in the structure of an amino acid?
determines the properties of the amino acids, the folding and function
25
what bond joins two amino acids together
peptide bond
26
Describe how two amino acids are joined together to form a dipeptide.
A peptide bond forms between the carboxyl group of one amino acid and the amino group of another
a condensation reaction happens and a water molecule is released
forming a dipeptide
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what is a globular protein
a spherical protein thats genrelly water soluble and usually has structural roles
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what is the secondary structure of a protein
the 2d strucure of a protein either beta pleated sheet or alpha helix
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what is displaced when a peptide bond forms
water
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what is the primary structure of a protein
the sequence of amino acids in a protein
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what is a fibrous protein
a class of long chain protein that are genrelly insoluble in water and have structural roles
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what is the quarternary structure of an amino acid
the 3d structure of more than one polypeptide
