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36 Cards in this Set

  • Front
  • Back
the basic components of protein
amino acids
protein that provides structure for connective tissues
Collagen
protein that provides structure for hair, nails, and horns
Kerratin
proteins that catalyze reactions in the body
Enzymes
proteins that allow for movement
myosin and actin
proteins that transport cholesterol
lipoproteins
protein that transports oxygen in the blood
hemoglobin
proteins that can act as a hormone
insulin, oxytocin, human growth hormone
proteins that protect the body from foreign substances
antibodies
foreign substances in the body
antigens
protein that protects the body by creating clots
fibrinogen
Protein that stores energy in milk
casein
protein that stores energy in eggs
ovalbumin
protein that stores Iron in the liver
Ferratin
proteins regulate the production of...
DNA
Proteins regulate the expression of these
genes
proteins regulate
feedback mechanisms
two types of proteins
fibrous proteins and globular proteins
comprise amino acids
carboxylic acid (COOH) and an amine
the number of natural amino acids
20
look at these to identify a type of amino acid
R group
affects how a protein functions
the protein's structure
Glycine
nonpolar, achiral, hydrophobic
R group: H
Gly
Alanine
nonpolar, chiral, hydrophobic
R group: methyl
(Ala)
phenylalanine
nonpolar, achiral, hydrophobic
R group: CH2 bonded to benzene
Phe
Serine
Polar, chiral
R group: CH2OH
(Ser)
Cystein
Polar, chiral
R group: CH2SH
(Cys)
Aspartic Acid
acidic, chiral
R grouop: CH2COO-
(Asp)
Lysine
Basic, chiral
R group: (CH2)4(NH3)
Zwitterion
molecule that has a + and - charge separated in space on the same molecule but has an overall charge of zero
L form of amino acids
COOH is adjacent to NH3
when placed in an acid...
amino acid recieves protons
when placed in a base...
amino acid donates protons
isoelectric point
pH where solution of amino acid is neutral
makes Cystein special
disulfide bonds (how do they affect DNA?)
Peptide bond
C bonded to N-H and double bonded to O