Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MAT1-1X683995016
MAT1-1AF19486848490
MAT1-1AY19698954790
MAT1-1AY19699054790
MAT1-1AY19699154790
MAT1-1AY19699254790
MAT1-1AY19699354790
MAT1-1AY1740485022

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

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Text2Knowledge ... Yong Huang 2002