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Proteins

Protein Structure

QuestionAnswer
Elements commonly found in Proteins C,O,H,N &S
Function of Protein structural,enzymes,hormones,transport,protection,contractile(movement),storage &toxins
essential amino acids amino acids that cannot be synthesised by animals
quaternary structure complex proteins involving interactions between polypeptides
disulphide bond formed by the oxidation of HS groups of neighbouring protein components
Hydrogen bond weak bond formed between the H+ion attached to O or N with the electronegative O- ion of the COO- group
forces forming the tertiary structure of proteins hydrogen bonds,sulphide bonds, ionic bonds and hydrophobic reactions between neighbouring R groups
secondary structure of Proteins alpha helix or beta sheets
primary structure of Proteins the precise sequence of amino acids
R-Group unique to each type of amino acid. It dictates the chemistry of the protein
number of amino acids that occur in living organisms twenty
peptide bond formation carboxyl group of one amino acid loses OH- and the amino group of another loses an H+
the amino acids in proteins are connected by peptide bonds
fundamental unit of Proteins Amino Acid
amphoteric possessing both acidic and basic properties
secondary structure polypeptide chain either forms an alpha helix or a beta sheet
Prosthetic group non protein group incorporated into the tertiary structure of some proteins
Globular protein most common form of proteins where the polypeptide chain is folded extensively to form a compact shape
Created by: stu-darke
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