Identification of critical amino acid residues for human iNOS functional activity.

Abstract excerpt

Nitric oxide (NO) is a short-lived signaling molecule that mediates a variety of biological functions, including vascular homeostasis, neurotransmission, antimicrobial defense and antitumor activities. Three known NOS isoforms (eNOS, nNOS and iNOS) have been cloned and sequenced. Here, we show that upon expression in Escherichia coli using a novel expression vector, an iNOS sequence containing three mutations...

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