Name: NIA Mouse four-cell-Embryo cDNA library (Long) Library ID: 2144 Organism: Mus musculus Strain: C57BL/6J Age: 0 Stage: embryo Organ: embryo Tissue: 4-cell embryos, pool of 360 Host: DH10B Vector: pCMV-SPORT6 Vector type: phagemid Insert digest: 5' SalI/NotI 3' Stop Codon Status: without Description: This is a long-transcript enriched cDNA library (Ref. Genome Res. 11: 1553-1558 (2001). [PMID: 11544199]). The mRNAs were extracted from a pool of 360 embryos at 4-cell stage. Double-stranded cDNAs were synthesized with an Oligo(dT) primer [Invitrogen: 5'-pGACTAGTTCTAGATCGCGAGCGGCCGCCCTTTTTTTTTTTTTTT-3'] from 10.8ng of mRNA, treated with T4 DNA polymerase, and purified by ethanol-precipitation. The cDNAs were ligated to Lone-linker LL-Sal4, purified by phenol/chloroform, and separated from free linkers by Centricon 100. Then, the cDNAs were amplified by long-range high fidelity PCR using Ex Taq polymerase (Takara) with a primer Sal4-S. The products were purified by phenol/chloroform and Centricon 100. The cDNAs were digested with SalI and NotI enzymes and cloned into SalI/NotI site of pCMV-SPORT6 plasmid vector. The DH10B E. coli host was transformed with the ligation mixture by the standard chemical method. The average insert size is about 2.2Kb. The library was constructed by Yulan Piao.