Keeping up-to-date. For more information about changes to the counterpart driving licence go to www.gov.uk/dvla/nomorecounterpart. Further enquiries on abolition of the counterpart can be sent to abolitionofcounterpart@dvla.gsi.gov.uk.You can also leave a question via our comments facility below.eeping up-to-date. For more information about changes to the counterpart driving licence go to www.gov.uk/dvla/nomorecounterpart. Further enquiries on abolition of the counterpart can be sent to abolitionofcounterpart@dvla.gsi.gov.uk.
Pepsin. Definition. noun, plural: pepsins or pepsine. A proteolytic enzyme in the gastric juice of birds, reptiles, fish, and mammals that partially digest dietary proteins into simpler, shorter chains of amino acids such as proteoses and peptones in the presence of hydrochloric acid. Supplement.Pepsin is capable of digesting many proteins from the food except protamine, keratin, and other highly glycosylated proteins. It is converted from pepsinogen that is released from the gastic pits of the stomach.The conversion of pepsinogen into pepsin occurs in the presence of hydrochloric acid or by the action of another pepsin in the gastric juice. Word origin: Greek pepsis (digestion), from peptein (to digest). Related term(s): 1  Propepsin.2  Peptic.upplement. Pepsin is capable of digesting many proteins from the food except protamine, keratin, and other highly glycosylated proteins. It is converted from pepsinogen that is released from the gastic pits of the stomach.
enzyme produced in the mucosal lining of the stomach that acts to degrade protein. Pepsin is one of three principal protein-degrading, or proteolytic, enzymes in the digestive system, the other two being chymotrypsin and trypsin.