Protein-coding gene in the species Homo sapiens
Kallistatin is a protein that in humans is encoded by the "SERPINA4" gene.
Kallistatin consists of three folded ß segments and eight helical structures and contains two functional domains, an active site and a heparin-binding site. 
Kallistatin signals through several receptors, including integrin ß3, lipoprotein receptor-related protein 6 ( LRP6 ), nucleolin, and Krüppel-like factor 4 ( KLF4 ).
References.
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Further reading.
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