Catsperd protein coding gene O genetic mapping 4933402B14Rik cation channel sperm associated auxiliary subunit delta Gene 4933402B14Rik|Tmem146|Gm6095|4921529N20Rik + Gm6095 http://identifiers.org/mgd/MGI:2147030 Tmem146 MGI:2147030 4921529N20Rik