O Epac2 5730402K07Rik MGI:1917723 1300003D15Rik Rapgef4 genetic mapping cAMP-GEFII Gene 6330581N18Rik Rap guanine nucleotide exchange factor (GEF) 4 + protein coding gene cAMP-GEFII|5730402K07Rik|1300003D15Rik|Epac2|6330581N18Rik http://identifiers.org/mgd/MGI:1917723