Strain Data Sheet
Data update: Jun 20, 2019
Health Report   PCR Protocol   Thawing Method
embryos / sperm >
  Mouse Marking
RBRC No. RBRC01966  
Type Targeted MutationCartagena   wks
Species Mus musculus  
Strain name B6;129S4-ERas<tm1Yam>  
Former Common name No Data  
H-2 Haplotype No Data  
ES cell line RF8 [129S4/SvJae]  
Background strain No Data  
 1 Appearance No Data  
Genotype No Data  
Strain development Developed by Dr. Shinya Yamanaka at Nara Institute of Science and Technology in 2003. A beta-geo cassette was inserted into the ERas coding region. The mutant mice were backcross to C57BL/6J for 4 times.  
Strain description ERas gene is important in the tumor-like grouwth properties of ES cells.
Homozygous mutant mice develop normally and are fertile.  
Colony maintenance Sibling Mating (Homozygote x Homozygote)  
Health Report
Gene Details
Promoter No Data  
 1 Symbol Eras  
Symbol name ES cell-expressed Ras  
Chromosome X  
Common name ecat5, Ha-Ras2, HRAS2, HRasp  
Symbol description No Data  
 2 Symbol IRES  
Symbol name internal ribosomal entry site (EMCV)  
Chromosome X  
Common name internal ribosomal entry site from EMCV  
Symbol description No Data  
 3 Symbol neo  
Symbol name neomycin resistance gene (E. coli)  
Chromosome X  
Common name neo; neomycin;  
Symbol description No Data  
 4 Symbol lacZ  
Symbol name beta-galactosidase (E. coli)  
Chromosome X  
Common name No Data  
Symbol description E. coli beta galactosidase  
References Nature. 2003 May 29;423(6939):541-5.  
Role of ERas in promoting tumour-like properties in mouse embryonic stem cells.
Research applications No Data  
Specific Term and Conditions For inquiries please mail us at  
Additional information
 1 MATERIAL TRANSFER AGREEMENT (Japanese (Word) / English (Word)  
 2 Genotyping protocol <PCR>  
Depositor Yamanaka, Shinya (Institute for frontier medical sciences, Kyoto university)  Yamanaka, Shinya 
Strain Status /
(Expected delivery)

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