muSec1 Gene Munc18b protein coding gene C79054|Munc-18b|Munc18b|Munc-18-2|Sxtp2|muSec1 Munc-18-2 MGI:107370 O Munc-18b Stxbp2 genetic mapping http://identifiers.org/mgd/MGI:107370 C79054 + Sxtp2 syntaxin binding protein 2