Cek5 Nuk protein coding gene Eph receptor B2 eteck http://identifiers.org/mgd/MGI:99611 O Prkm5 genetic mapping Qek5|Erk|Prkm5|Sek3|Tyro5|Nuk|eteck|Hek5|Drt|Cek5 Ephb2 Drt Erk Gene Sek3 - Qek5 MGI:99611 Tyro5 Hek5