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Proteins
Proteins flashcards
14
Biochemistry
10th Grade
11/08/2011

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Term
protein
Definition
a polymer built from various combinations of 20 amino acids
Term
Enzyme
Definition
protein that serves as metabolic catalysts, regulates chemical reactions within cells
Term
Structural proteins
Definition
provide associations between body parts
Term
contractile proteins
Definition
proteins found within muscle
Term
Defensive proteins
Definition
proteins that include antibodies of the immune system
Term
receptor proteins
Definition
serve as antenna for outside signals
Term
transport proteins
Definition
proteins carry oxygen, like hemoglobin
Term
Amino acids
Definition
building blocks of proteins, have an amino group and a carboxyl group
Term
peptide bond
Definition
links carboxyl group of one amino acid to amino group of other
Term
polypeptide chain
Definition
contains hundreds or thousands of amino acids
Term
Primary structure
Definition
unique amino acid sequence
Term
Secondary structure
Definition
alpha helixes or beta pleated sheets (because of hydrogen bonds)
Term
Tertiary structure
Definition
overall 3D shape of single polypeptide
Term
Quaternary structure
Definition
2 or more polypeptides
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