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  • Title: Tonin-like activity present in the human submandibular gland.
    Author: Gualberto MP, Nunes RL, Beraldo WT, Pesquero JL.
    Journal: Agents Actions Suppl; 1992; 38 ( Pt 1)():392-400. PubMed ID: 1334624.
    Abstract:
    An enzyme which is able to liberate angiotensin II from angiotensin I, angiotensinogen(1-14) fragment and angiotensinogen was purified from human submandibular gland. Its molecular weight is 110,000; is inhibited by PMSF but not by EDTA or enalaprilat. The pH optima for angiotensin II liberation were 4.0 for angiotensin I, 7.0 for angiotensinogen(1-14) fragment and 8.0 for angiotensinogen. The total amount of angiotensin II generating activity in the human submandibular gland is 5,000-times smaller than that in the rat gland.
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