Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
P26s4NM_00894710090S4    Psmc1   
P26S4BC0163689606S4    p56    MGC24583    MGC8541    PSMC1   
P26S4BC0005129606S4    p56    MGC24583    MGC8541    PSMC1   
P26S4NM_0028029606S4    p56    MGC8541    MGC24583    PSMC1   
P26s4BC00386010090S4    Psmc1   
P26S4BC0677419606S4    p56    MGC24583    MGC8541    PSMC1   
P26s4NM_0797457227S4    p56    dRpt2    CG5289    DmP26S4    Dm_Rpt2    Pros26.4   
P26s4NT_0337777227S4    p56    dRpt2    CG5289    DmP26S4    Dm_Rpt2    Pros26.4   

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

Google

Text2Knowledge ... Yong Huang 2002