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20 Cards in this Set
- Front
- Back
What elements do protein contain?
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Carbon
Hydrogen Oxygen Nitrogen sometimes sulphur. |
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What are the building blocks of proteins?
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Amino acids.
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What do amino acids always contain?
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Amino group
Carboxylic acid group. |
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Are amino acids soluble in water?
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Yes - readily.
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What bonds form proteins?
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Pepitide bonds.
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2 amino acids join together to form .....
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Dipepitide.
A condenstation reaction. |
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Proteins are complex structures - 4 different levels.....
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Primary
Secondary Tertiary and Quaternary. |
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Primary refers to the ....... or ...... of ...... .....
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sequence or order
amino acids. |
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The secondary structure of the protein refers to the ....
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patterns contained within the amino acids chains.
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Common types of secondary structure proteins are.....
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helix - a spiral
pleated sheet - flat structure, 2 or more amino acid chains running parallel. |
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The tertiary structure of a protein is it's overall.....
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three-dimensional shape.
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Tertiary structure is maintained .....
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disulphide bridges - covalent bonds.
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Disulphide bridges contribute to .......
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strength.
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Final 3D sructure of proteins result in 2 main classes of protein..... .......
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Fibrous
Globular. |
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Fibrous proteins contain ..... that bind together to form long fibres or sheets.
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polypeptides
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Fibrous are ...... in water.
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insoluble
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Globular are usually molecules with complex ..... and ....... structures.
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tertiary
quaternary |
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Globular are ...... in water.
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soluble
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Tertiary or quaternary structure breaks up, changing the shape of the molecule. This is called?
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Denaturation.
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What are some proteins particularly sensitive to?
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pH
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