Histidine and proline are two amino acids often present in enzymes. Histidine has a polar R-group, whereas proline has a non-polar R-group. Where would most histidines and prolines be located?
- Ahistidine: inside an enzyme; proline: on the surface of an enzyme
- Bhistidine: on the surface of an enzyme; proline: on the surface of an enzyme
- Chistidine: inside an enzyme; proline: inside an enzyme
- Dhistidine: on the surface of an enzyme; proline: inside an enzyme