Your Query returns 48 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
nifEAP003585103690
nifEU47055103690
nifEU326652208
nifEL355571859
nifEAE000102394
nifEAF11936147227
nifEAF00370041431
nifEAJ313205316
nifEAP005941224911
nifEAF03041433996
nifEAF361867192
nifEU7588739152
nifEAE007236382SMa0830   
nifEX56894375
nifEX99694549
nifEAL672114381
NifEX174331061
nifEX87971145262
nifEAE011102188937MA3900   
nifEAE012909194439CT1538   
nifEAF167539119677
nifEAF1675401164
nifEAF16754192938
nifEAF167542122326
nifEAF16754344472
nifEAF1675441178
nifEAF1675451184
nifEAF16754834078
nifEAY0292342209
nifEAE013298192952MM0724   
nifEAF088132964
nifEU8092829449RESP0118F. RetliDB:RE1SP0000118   
nifEAY204397180
nifEAH010242375
nifEAF322012375
nifENC_000914394
nifENC_003272103690
nifENC_004463224911
nifENC_003552188937
nifENC_00404129449RESP0118F. RetliDB:RE1SP0000118   
nifENC_003901192952
nifENC_002932194439CT1538   
nifENC_0030301488
nifEBX572607258594
nifEBX95722139152
nifENC_005296258594
nifENC_003037266834
nifENC_005791267377

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

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Text2Knowledge ... Yong Huang 2002