Biochemistry Proteins
Chemistry
Proteins
Sample Data
| Text | The isoelectric point of a peptide is the pH at which its net charge is zero. The net charge of a peptide at any given pH depends on the protonation state of its N- and C-termini, as well as on the protonation states of any {{c1::ionizable}} side chains. |
| Back Extra | Asp, Glu, Tyr, and Cys, the ionizable groups are uncharged below their pK and negatively charged above their pK. For His, Lys, and Arg, the ionizable groups are positively charged below their pK and uncharged above their pK. |
| Front | If a protein is 20 amino acids long but only consists of 3 amino acids L, A and H. How many combinations can be have if each can be used more than once? |
| Back | 3x3x3x3x3x3x3x3x3x3x3x3x3x3x3x3x3x3x3x33^20 |
| Text | In {{c2::anti-parralel}} B-sheets, the NTDs of one strand are alligned with the CTD of another strandAlso in these anti parralel B-sheet, the strands may be linked by {{c1::B-turns}} which induces a 180 degrees bend. These are not present in parralel B-sheets because the directionality is never reversed. Instead, the strands are linked by loops that make a {{c3::360}} degree turn in order to allign the NTDs |
| Back Extra |
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