A carboxipeptidase A1 é un encima hidrolase da familia das metaloproteases de Zn que nos humanos está codificado no xene CPA1 do cromosoma 7 nunha agrupación de xenes.[1]
Illáronse tres formas de procarboxipeptidase A pancreática humana. As formas A1 e A2 son proteínas monoméricas con diferentes propiedades bioquímicas. A carboxipeptidase A1 é unha exopeptidase monomérica pancreática. Corta preferentemente aminoácidos de cadea ramificada e aromáticos en posición C-terminal.[1]
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