Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Rpn-1NM_13393310090D6Wsu137e    Rpn1   
rpn-1AF0390526239
rpn-1NC_0032826239T22D1.9    CELK00135   
rpn-1NM_0686636239T22D1.9    CELK00135   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002