http://identifiers.org/mgd/MGI:1923523 Gene 9130207N19Rik N4wbp5a protein coding gene Nedd4 family interacting protein 2 MGI:1923523 O 0710001O20Rik + Ndfip2 0710001O20Rik|N4wbp5a|9130207N19Rik genetic mapping