Slc52a2 Gpr172b protein coding gene + 2010003P03Rik Gene MGI:1289288 PAR2|GPCR42|2010003P03Rik|D15Ertd747e|Gpr172b genetic mapping D15Ertd747e http://identifiers.org/mgd/MGI:1289288 GPCR42 PAR2 solute carrier protein 52, member 2 O