Your Query returns 21 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
rpn1AL5124954896SPBP19A11.03c    mts4   
rpn1BC0493037955wu:fc88a12    fc88a12    fc68b07    wu:fc68b07   
Rpn1AF4041115691
rpn1NM_1979347955fc68b07    fc88a12    wu:fc68b07    wu:fc88a12   
Rpn1NM_13393310090Rpn-1    D6Wsu137e    180470
Rpn1NW_04770610116
Rpn1NM_01306710116RIBI   
RPN1BC0108399606RBPH1    180470
RPN1AY4193379606180470
RPN1AY4193389598
RPN1AY41933910090180470
RPN1NM_0029509606RBPH1    180470
Rpn1NT_03935310090180470
Rpn1BC01608010090180470
Rpn1BC06175610116RIBI   
Rpn1BC00217510090180470
RPN1NT_0056129606180470
Rpn1AE0035157227
Rpn1NM_1409017227p97    CG7762   
Rpn1NT_0374367227p97    CG7762   
RPN1NC_0011404932NAS1    HRD2   

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

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Text2Knowledge ... Yong Huang 2002