产品概述：Purified recombinant protein of Mouse UPF1 regulator of nonsense transcripts homolog (yeast) (Upf1), with C-terminal MYC/DDK tag, expressed in HEK293T cells, 20ug

蛋白长度：A DNA sequence from Mouse cDNA ORF Clone, [GM46025V], encoding Mouse full-length Upf1.

表达系统：HEK293T

种属：Mouse

标签类型：C-MYC/DDK

分子量：124 kDa

通用名：Upf1

总结：RNA-dependent helicase and ATPase required for nonsense-mediated decay (NMD) of mRNAs containing premature stop codons. Is recruited to mRNAs upon translation termination and undergoes a cycle of phosphorylation and dephosphorylation; its phosphorylation appears to be a key step in NMD. Recruited by release factors to stalled ribosomes together with the SMG1C protein kinase complex to form the transient SURF (SMG1-UPF1-eRF1-eRF3) complex. In EJC-dependent NMD, the SURF complex associates with the exon junction complex (EJC) (located 50-55 or more nucleotides downstream from the termination codon) through UPF2 and allows the formation of an UPF1-UPF2-UPF3 surveillance complex which is believed to activate NMD. Phosphorylated UPF1 is recognized by EST1B/SMG5, SMG6 and SMG7 which are thought to provide a link to the mRNA degradation machinery involving exonucleolytic and endonucleolytic pathways, and to serve as adapters to protein phosphatase 2A (PP2A), thereby triggering UPF1 dephosphorylation. UPF1 can also activate NMD without UPF2 or UPF3, and in the absence of the NMD-enhancing downstream EJC indicative for alternative NMD pathways. Plays a role in replication-dependent histone mRNA degradation at the end of phase S; the function is independent of UPF2. For the recognition of premature termination codons (PTC) and initiation of NMD a competitive interaction between UPF1 and PABPC1 with the ribosome-bound release factors is proposed. The ATPase activity of UPF1 is required for disassembly of mRNPs undergoing NMD (By similarity). Essential for embryonic viability.[UniProtKB/Swiss-Prot Function]

形式：Liquid

浓度：>50 ug/mL as determined by microplate BCA method

纯度：> 80% as determined by SDS-PAGE and Coomassie blue staining

储存溶液：25 mM Tris.HCl, pH 7.3, 100 mM glycine, 10% glycerol.

别名：B430202H16Rik; NORF1; PNORF-1; Rent1; Upflp