aimno acids Flashcards
Asp
aspartate, polar (aspartic acid-acid polar)
Glu
Glutamate, polar (glutamic acid-acid polar)
Tyr
Tyrosine, uncharged polar
Asn
Asparagine, uncharged polar
Gln
Glutamine, uncharge polar
Trp
Tryptophan, nonpolar
Cys
Cystein, uncharged polar
His
Histidine, basic polar
Ile
Isoleucine, nonpolar
Met
Methionine, nonpolar
Ser
Serine, uncharged polar
Val
Valine, nonpolar
Ala
Alanine, nonpolar
Gly
Glycine, nonpolar
Leu
Leucine, nonpolar
Pro
Proline, nonpolar
Thr
Threonine, uncharged polar
Arg
Arginine, Basic Polar
Phe
Phenylalanine, nonpolar
Lys
Lysine, basic polar
Nonpolar Amino Acids
alanine Glycine Isoleucine Leucine Methionine Phenylalanine Proline Tryptophan Valine
9
uncharged Polar amino acids
asparagine cysteine glutamine serine threonine tyrosine
6
Acidic polar amino acids
Aspartic acid
glutamic acid
Basic polar amino acids
arginine
histidine
lysine
What is special about methionin and tryptophan?
nonpolar amino acids who have something other than just carbon and hydrogen in the R group. Tryptophan has nitrogen, methionin has 1 sulfur group
Maple Syrup Urine Disease
when the breakdown of Isoleucine, leucine, and valdine is disrupted. They are branched chain amino acids.
What is special about phenylalanine
During normal catabolism, it is broken down into tyrosine. Patients with a defective step in this pricess suffer from PKU, can cause retardation
What is special about tryptophan?
it is the precursor for serotonin, which serves as an important neurotransmitter with roles in pain perception, regulation of sleep, appetite, temperature, blood pressure, cognitive functions, and mood.
What is important about glycine
Found in collagen, 1st in sequence of 3. has the smallest R group. If it gets substituted by another amino acid, the resulting bulkier R group disrupts the normal collagen structure, this is called osteogenesis imperfecta. can cause brittle bones
What is special about proline?
cyclic, rigid
What is special about methionine?
serves as a methyl group donor in many methylation reactions in biochemistry
What contributes to the overall charge on a polypeptide?
Charged amino acids
What amino acids MAY be phisphorylated?
Serine, Threonine, and Tyrosine
What is tyrosine a precurosor for?
catecholamines