Your Query returns 75 Accession Numbers:

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

Gene/Allele	Accession	NCBI Taxonid	Synonyms
cobA	AJ414151	214092	YPO2214 btuR
cobA	AE004557	208964	btuR cobO
cobA	AE017166	167539	cysG
cobA	NC_005042	167539	cysG
cobA	NC_003143	214092	btuR
cobA	BX572595	258594	btuR cobO
cobA	NC_005296	258594	btuR cobO
COBA	M62881	1404
cobA	M59236	43306
cobA	D90910	1148
cobA	L08890	602
cobA	AP005369	197221
cobA	AF115334	294
cobA	AJ567348	380
cobA	AP005947	224911
cobA	AP006577	251221
cobA	X70966	1140
cobA	AL646079	305	RS03751 RSp0616
cobA	AE006843	2287	SSO2435
cobA	AL583922	1769	ML1565
cobA	D63375	5061
cobA	AB002583	45157
cobA	AE009227	180835	Atu2794
cobA	BX569695	84588
cobA	BX572094	59919
cobA	BX572101	74547
cobA	BX927153	196627
cobA	AY033235	1752	cobO
cobA	U13043	1752
cobA	AE012816	194439	CT0390
cobA	AF178757	103690
cobA	AE014427	204722
cobA	AF022186	2771
cobA	AE015806	211586
cobA	AE004603	208964
cobA	AE000678	224324	aq_207
cobA	AF067123	1598
cobA	AE011604	189518
cobA	AE016864	223283
cobA	AY426747	1422
cobA	AE017237	262316
cobA	AE000657	224324	aq_207
cobA	AH001255	162425
cobA	J01388	162425
cobA	J01389	162425
cobA	A30006	43306
cobA	NC_000911	1148
cobA	NC_004113	197221
cobA	NC_004463	224911
cobA	NC_000918	224324
cobA	NC_002516	208964
cobA	NC_001840	2771
cobA	NC_002932	194439	CT0390
cobA	NC_004310	204722
cobA	NC_002754	2287
cobA	NC_004343	189518
cobA	NC_004347	211586
cobA	NC_004578	223283
cobA	NC_002677	1769
cobA	NC_005072	59919
cobA	NC_005071	74547
cobA	NC_000962	83332
cobA	NC_005070	84588
cobA	NC_004799	45157
cobA	BX572599	258594
cobA	0	N/A
cobA	AE017300	267671	cysG
cobA	NC_002944	262316
cobA	NC_005296	258594
cobA	0	N/A
cobA	NC_005823	267671	cysG
cobA	NC_003296	267608	RS03751
cobA	NC_003304	176299
cobA	NC_003047	266834
cobA	NC_005125	251221

Text2Knowledge ... Yong Huang 2002