AMINO ACIDS AND PROTEINS Flashcards
Building blocks of more complex compounds
Amino acid
Amino acids Have three parts
Amino group, Side chain or R group, carboxylic acid group
The carbon at the center
Alpha - carbon
Their R groups are mostly hydrogen
and carbon
○ Non-polar hydrophobic
Their R groups are alcohol, phenol,
thiol, amide
polar and charged
Their R group can’t be seen but
supposedly, the oxygen has a
negative charge
polar acidic
The negative charge of the oxygen
are one of the signs that describes
the amino acid as __________
polar acidic
Instead of having a negative charge,
a positive charge can be seen its side
chains
polar basic
sential Amino Acids
- It is required in the diet but cannot be synthesized in the body
essential amino acid
give me the essential amino acid
P-phenylalanine
V - valine
T - Threonine
T-Trytophan
I - Isoleucine
M - methionine
H - histidine
A - arginine
L - leucine
L - lysine
- Not required in the diet but can be synthesized by the body
Non-essential amino acid
Give me the 12 non-essential amino acid
Alanine
● Asparagine
● Aspartic Acid
● Cysteine
● Glutamic Acid
● Cysteine
● Glutamic Acid
● Glutamine
● Glycine
● Proline
● Serine
● Tyrosine
Ala
Alanine
Arg
Arginine
Asp
Aspartic acid
Asn
Asparagine
cys
Cysteine
Gln
Glutamine
Glu
Glutamic Acid
Gly
Glycine
His
Histidine
IIe
Isoleucine
Leu
Leucine
Lys
Lysine
Met
Methionine
Phe
Phenylalanine
Pro
Proline
Ser
Serine
Thr
Threonine
Trp
Tryptophan
Tyr
Tyrosine
Val
Valine
Sec
Selenocysteine
Pyl
Pyrrolysine
● Plays a role in cell division
Arginine
● Plays a role in cell division
Arginine
Healing of wounds, stimulation of protein synthesis
● Immune function
Arginine
Release of hormones
Arginine
Required for the generation of urea and synthesis of
creatin
Arginine
is the less toxic form produced from the
ammonia metabolized in the urea cycle
Urea
is a compound
involved in the supply of energy for muscle
contraction
Creatin
is synthesized with arginine
Creatine
when broken down forms creatinine
Creatinine
● Direct precursor of histamine
Histidine
● Repair body tissues
histidine
● Maintain myelin sheaths that protect the nerve cells
histidine
Helps manufacture RBC and WBC
histidine
● Protect the body from heavy metal toxicity
histidine
Needed for hemoglobin formation
Isoleucine
Helps to regulate blood and glucose levels and maintain
energy levels
Isoleucine
Boosts healing of muscle, skin, and bones
Leucine
Optimal growth of infants and for nitrogen balance in
adults
Leucine
● Lowers blood glucose levels
Leucine
Plays a role in the production of antibodies and
antibodies (immunoglobulins) and lowers triglyceride
levels
Lysine
Needed for proper growth and bone development in
children and to maintain a proper nitrogen balance in
adults
Lysine
Helps in the absorption of calcium and the formation of
collagen
Lysine
Helps initiate translation of messenger RNA
Methionine
First amino acid encoded during translation
Methionine
If __________is not encoded, translation won’t
happen
methionine
The codon that encodes for methionine is the
start codon, ________
AUG
Source sulfur
Methionine
functions for the normal metabolism and
growth of the body
sulfur - methionine
● Assist the breakdown of fats
methionine
● Helps to detoxify lead and other heavy metals
methionine
● Helps diminish muscle weakness
methionine
● Prevents brittle hair
methionine
Promotes alertness and vitality, elevates mood,
decreases pain, aids memory and learning
phenylalanine
● Used to treat arthritis and depression
phenylalanine
phenylalanine Used by brain to produce _______
norepinephrine
Uses active transport channel to cross the BBB
Phenylalanine
BBB
blood brain barrier
Interferes with the production of serotonin
phenylalanine
Part of the composition of aspartame
phenylalanine
Common sweetener in (?) food as sugar
replacment
aspartame
Important in the component in the formation of protein,
collagen, elastin, and tooth enamel
threonine
Helps maintain proper protein balance and aids in liver
function, metabolism, and assimilation
threonine
Precursor for serotonin (5-hydroxytryptamine) and
melatonin
trytophan
■ Stabilized the mood
Serotonin
■ Person feeling happy
Serotonin
Hormone secreted by pineal gland
melatonin
Sleep week cycle (highest during
night time
melatonin
● Natural relaxant
trytophan
Alleviate insomnia by inducing sleep, soothes anxiety
and reduces depression
trytophan
● Used in treatment of migraine headaches
trytophan
● Aids in weight control by reducing appetite
trytophan
● Helps control hyperactivity in children
trytophan
● Heaviest among all the amino acids
trytophan
Needed for muscle metabolism and coordination, tissue repair, maintenance of nitrogen balance
valine
● Used by muscle tissue as an energy source
valine
Used in treatments for muscle, mental and emotional
problems (insomnia, anxiety, liver and gallbladder
disease)
valine
Involved in the breakdown of glucose
Alanine
● Product of the breakdown of DNA
Alanine
● Transfer of nitrogen from the peripheral tissue to the liver
alanine
Helps in reducing the buildup of toxic substances that are
released into muscle
alanine
Strengthens the immune system through production of
antibodies
alanine
● First amino acid to be isolated
asparagine
● From asparagus juice
asparagine
Converting one amino acid into another via amination
and transamination
asparagine
Amine group is introduced to an
organic molecule
Amination
Amino acid is transferred to an alpha
keto acid (alpha ketoglutarate)
Transamination
Required by the nervous system and synthesis of
ammonia
Asparagine
A metabolite in the urea cycle and participates in
gluconeogenesis
Aspartic acid
● Named after cystine (precursor)
Cysteine
will travel in your cells, and as it goes
inside the cells, it will be reduced to 2 cysteine
molecules
cystine
● Also known as half-cystine residue
cysteine
● Production of flavors
cysteine
● Contains sulfur
cysteine
Serves as a neurotransmitter and dysregulation has been
linked to epileptic seizures
Glutamic acid
● aids in transporting potassium to the spinal fluid
Glutamic acid
● responsible for the taste umami
Glutamic acid
food additive/food enhancer(sodium salt, monosodium
glutamate (bitsin)
Glutamic acid
● most abundant amino acid in the body
Glutamine
assists in maintaining the proper acid/alkaline balance in
the body (regulates pH)
Glutamine
supplement used for muscle growth in weightlifting and
bodybuilding
Glutamine
transports ammonia to the liver
Glutamine
is toxic to the body (increased levels
is dangerous), may lead to comatose
ammonia