- heat shock protein 90, alpha (cytosolic), class A member 1 Hsp90aa1 Hsp89 MGI:96250 hsp4 hsp4|Hspca|Hsp90|Hsp86-1|Hsp89 Hsp86-1 genetic mapping Hspca Gene protein coding gene O Hsp90 http://identifiers.org/mgd/MGI:96250