PROTEINS Flashcards
class of protein
structural
contractile,
transport
hormones,
enzymes,
protection,
storage
in tendons and cartilage
collagen
in hair, skin, wool and nails
keratin
contract muscle fibers
myosin and actin
transports oxygen
hemoglobin
transport lipids
lipoproteins
stores protein in milk
casein
stores iron in the spleen and liver
ferritin
regulates blood glucose level
insulin
regulates body growth
growth hormone
catalyze the hydrolysis of sucrose
sucrase
catalyze the hydrolysis of proteins
trypsin
stimulates the immune response
immunoglobulin
with hydrocarbon
side chains (hydrophobic)
nonpolar
with polar
or ionic side chains
(hydrophilic)
▪ polar (neutral)
with acidic
side chains (hydrophilic)
polar (acidic)
with –NH2 side chains
(hydrophilic)
polar (basic)
has an R group that is H, an alkyl group, or aromatic.
nonpolar amino acid
has an R group that is an alcohol, thiol, or amide.
polar amino acid
An amino acid is _____ with a carboxyl R group (COO–)
acidic
An amino acid is _____ basic with an amino R group (NH3+)
basic
linking NH2 of 1 amino acid to
- COOH of another
- C–N bond
Peptide bonds: dehydration synthesis
an amide bond (amide bond) is a covalent
chemical bond formed between two amino acid molecules.
peptide bond
