http://identifiers.org/mgd/MGI:2444401 U5-200KD O A330064G03Rik|Ascc3l1|U5-200KD|HELIC2 Ascc3l1 MGI:2444401 A330064G03Rik HELIC2 small nuclear ribonucleoprotein 200 (U5) Snrnp200 Gene genetic mapping + protein coding gene