Your Query returns 8 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mkp1AL0352594896srk1    SPCC1322.08   
Mkp1AF0843834754
mkp1AF0776774754
MKP1AF3127453702
mkp1AF3127464577
MKP1AF3127474081
Mkp1AF35720310116
MKP1AF0265229031

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

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Text2Knowledge ... Yong Huang 2002