Your Query returns 7 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
mkk1	AL391604	4896	pek1 SPBC543.07 skh1
MKK1	NM_002755	9606	MEK1 MAPKK1 PRKMK1 MAP2K1	176872
mkk1	AF249887	4754
MKK1	Z75139	4932
MKK1	AY452723	5145
mkk1	AF525688	148305
MKK1	0	N/A	SSP32

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

Text2Knowledge ... Yong Huang 2002