O Nec1|SPC3|PC3|Nec-1|prohormone convertase 1/3|PC1|Phpp-1 Nec-1 http://identifiers.org/mgd/MGI:97511 Nec1 PC3 MGI:97511 Pcsk1 Phpp-1 proprotein convertase subtilisin/kexin type 1 PC1 genetic mapping SPC3 + Gene protein coding gene prohormone convertase 1/3