pKa, DNA, functional groups
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20 Terms
adenine
guanine
cytosine
uracil
thymine
pKa of COOH group on amino acid
2.2
pKa of amino group on amino acid
9.4
pKa of regular COOH
4.5
pKa of regular amine
9
pKa of tyrosine
10.5
when pH> pKa, phenol grp gets deprotonated (negative)
pKa of cysteine
8.4
when pH>pKa, sulfhydryl grp gets deprotonated (negative)
pKa of lysine
10.5
normally pos.; when pH> pKa, NH3+ gets deprotoated (neutral)
pKa of arginine
12.5
normally pos.; when pH>pKa, guanidino grp gets deprotonated (neutral)
pKa of histidine
6
normally pos.; when pH>pKa, imidazole grp gets deprotonated (neutral)
pKa of aspartate
3.9
normally neg.; when pH<pKa, COO- grp gets protonated (neutral)
pKa of glutamate
4.1
normally neg.; when pH<pKa, COO- grp gets protonated (neutral)
thioester
phosphate ester
diphosphate ester
phosphate diester