Your Query returns 71 Accession Numbers:

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

Gene/Allele	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
mTR	NR_001579	10090	mTER Terc	156570
mtr	NM_137602	7227
mtr	NT_033778	7227
mtr	M59862	562
mtr	M58338	562
mtr	BC045477	7955	cb830
mtr	U18997	562
mtr	BX248343	233413
mtr	AJ414147	214092	YPO1285
mtr	AE000397	83333	b3161
mtr	AE006159	747	PM1192
mtr	AE005544	155864	Z4522
mtr	L34605	5141
mtr	AJ270526	487
mtr	AJ270527	487
mtr	AJ270528	487
mtr	AJ270529	487
mtr	AJ270530	487
mtr	AJ270531	487
mtr	AJ270532	487
mtr	AJ270533	487
mtr	AJ270534	487
mtr	AJ270535	487
mtr	AJ270536	487
mtr	AJ270537	487
mtr	AJ270538	487
mtr	AJ270539	487
mtr	AJ270540	487
mtr	AJ270541	487
mtr	AJ270542	487
mtr	S81767	5141
mtr	BX571861	243265
mtr	BX842581	83332
mtr	AE013892	187410	y2900
mtr	AE015331	198214
mtr	AE015892	211586
mtr	AE016767	199310
mtr	AE004956	208964
mtr	AE016989	198215
mtr	AE008851	99287	STM3279
mtr	AE005174	83334	Z4522
mtr	NM_198072	7955	cb830
Mtr	NW_047492	10116
MTR	NM_000254	9606	MTR **	156570
Mtr	XM_138431	10090		156570
Mtr	NT_039576	10090		156570
mtr	AJ249356	103723
mtr	AJ249358	103724
mtr	AJ249360	103723
mtr	AJ249362	103723
mtr	AJ249364	103722
mtr	NC_000913	83333
mtr	NC_000917	224325
mtr	NC_002516	208964
mtr	NC_002663	747
mtr	NC_002655	155864
mtr	NC_004088	187410
MTR	AB073980	109175
mtr	NC_004337	198214
mtr	NC_004431	199310
mtr	NC_004347	211586
mtr	NC_004741	198215
mtr	NC_003143	214092
mtr	NC_002945	233413
mtr	NC_005126	243265
MTR	NT_004836	9606	MTR **	156570
mtr	AE017131	229193
Mtr	NM_030864	10116
mtr	NC_003197	99287
mtr	0	N/A
mtr	NC_000907	71421

Text2Knowledge ... Yong Huang 2002