proteins 2 Flashcards
1
Q
aromatic R groups
A
phenylalanine
tyrosine
tryptophan
2
Q
negatively charged R groups
A
aspartate
glutamate
3
Q
positively charged R groups
A
histidine
arginine
lysine
4
Q
Thedefinitionsandderivationsof:
pH
pKa
A
- log10 [H+]
- log10 Ka
5
Q
The definitions of pI
A
the pH at which a molecule or surfaces carries no net electrical charge
6
Q
if aminos acids dissolve in water they are called
they go from … to ….
A
dipolar ions
nonionic form to zwitterionic form
7
Q
the lower the pKa value…
A
the stronger the acid
indicates the acid more fully dissociates in water.
8
Q
hasselbach equation
A
pH=pKa + log10 {A-}/{HA)
9
Q
A-
HA-
A
conjugate base
weak acid
