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Physiological pH (7.4) amino acid structure
NH3+
COO-
18 of the 19 chiral amino acids are s, the exception is
L-Cysteine
Is R or S configuration more dominant?
S
Polar Amino Acids (Stick Nick)
STQ NYC, Ser, Thr, Tyr, Cys, Asn, Gln
Where would you expect to find AA’s with OH groups? (OH SYT down)
On the surface of proteins and enzymes due to their ability to participate in hydrogen bonding and phosphorylation
What can cysteine form
disulfide bonds
Cysteine and Tyrosine can act as ____ acids
weak, they can donate a proton