Identification of serpin determinants of specificity and selectivity for furin inhibition through studies of α1PDX (α1-protease inhibitor Portland)-serpin B8 and furin active-site loop chimeras.

Abstract excerpt

α1-Protease inhibitor Portland (α1PDX) is an engineered serpin family inhibitor of the proprotein convertase (PC), furin, that exhibits high specificity but limited selectivity for inhibiting furin over other PC family proteases. Here, we characterize serpin B8, a natural inhibitor of furin, together with α1PDX-serpin B8 and furin-PC chimeras to identify determinants of serpin specificity and selectivity for...

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