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L'équilibre acido-basique du sang - UFR des Sciences de la Vie

L'équilibre acido-basique du sang - UFR des Sciences de la Vie

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L’ÉQUILIBRE ACIDO-BASIQUE DU SANG<br />

• Les tampons circu<strong>la</strong>nts : l’hémoglobine <strong><strong>de</strong>s</strong> hématies.<br />

L’hémoglobine contient un grand nombre <strong>de</strong> groupes aci<strong><strong>de</strong>s</strong> et <strong>basique</strong>s :<br />

COOH, NH 2 , NH 3 + , -NH-CNH-NH2 (guanidine)<br />

• En plus, influence <strong><strong>de</strong>s</strong> groupes imidazoles<br />

HC C CH 2 C COO-<br />

N<br />

CH<br />

NH<br />

Imidazole<br />

H<br />

NH 3 +<br />

Savineau - 2008-2009<br />

HISTIDINE

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