Structures
This is the structure for proline.
R group - 4 carbon and nitrogen ring
Y
Tyrosine
Lys
Lysine
What is the three letter code for proline
Pro
Draw an energy diagram for an endothermic reaction (and show deltaG)
Products higher than reactants; deltaG positive
This is the structure of leucine
R group - 2 carbons next to two methyls
E
Glutamic acid
Histidine
His
Give the one letter code for alanine
A
For the reaction aA+bB yields cC+dD what is Keq?
[A]a[B]b/[C]c[D]d
This is the structure of threonine.
R group- one methyl and one alcohol
Serine
S
Ile
Isoleucine
What is the structure for glycine
R group - H
What is the name of an acid that can give up multiple protons called?
A polyprotic acid
This is the structure for phenylalanine.
R group - carbon group attached to aromatic ring.
Glutamine
Arginine
Arg
What is the structure and one letter code for arginine
R group - 3 carbons, 1 nitrogen, then carbon and nitrogen with double bonded nitrogen; R
When does pH=pKa on a titration graph?
About halfway at the buffering region (half equivalence point)
This is the structure for asparate (aspartic acid)
R group - one carbon attached to carboxylic acid.
W
Tryptophan
Glutamine
Gln
Give the structure, one, and three letter code for methionine
R group - 2 carbons, sulfur, and methyl; M; Met
State the definition of pI
The pH at which the net charge of a polypeptide or amino acid is 0.