Your Query returns 4 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CG11154AE0038467227ATPsyn-beta   
CG11154NC_0043537227ATPB    CG8189    ATPsyn-b    ATPsyn-beta   
CG11154NM_1668087227ATPB    CG8189    ATPsyn-b    ATPsyn-beta   
CG11154NM_1668097227ATPB    CG8189    ATPsyn-b    ATPsyn-beta   

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

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Text2Knowledge ... Yong Huang 2002