ProteiN proteiN – “N” stands for nitrogen. There is an “N” in the word proteiN The element...
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Transcript of ProteiN proteiN – “N” stands for nitrogen. There is an “N” in the word proteiN The element...
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proteiN
• proteiN – “N” stands for nitrogen.
• There is an “N” in the word proteiN
• The element Nitrogen is always present in proteiNs.
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Parts of an amino acid
• The NH2 group is the amino group
• The COOH on right is called a carboxyl group.
• Carboxyl group is responsible for giving the amiNo acid it’s acid properties
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Elements Present
Used by organisms
Related terms & info
Carbon (C)
Hydrogen (H)
Oxygen (O)
Nitrogen (N)
(always those 4)
Structure
Enzymes
Antibodies
Hormones
Pigments
Peptide bond = the bond that holds amino acids together in protein molecules
Dipeptide = two connected amino acids
Polypeptide = 3 or more connected amino acids
Building block of proteiNs:
Amino Acid
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Making Chains
• There are 20 essential amino acids that the human body needs.
• These 20 amino acids combine together to form long chains.
• These long chains of amino acids are known as proteins.
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How are amino acid chains formed?
• By dehydration synthesis.
• Amino acids are linked by peptide bonds.
• Two amino acids liked together is known as a _________?
• Many amino acids linked together is known as a___________?
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Peptide bonds are broken by hydrolysis
• Hydrolysis breaks the peptide bond by the addition of water (H2O)
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What is occurring in this reactionHydrolysis or Dehydration Synthesis?
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Which one of these is an amino acid?
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All amino acids are the same except for the R group
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Proteins in the cell membrane
• Proteins are used in the cell membrane to aid in what kind of diffusion?
• They are used in what kind of transport?