| Formulation |
The NELFE solution (0.25mg/ml) contains 20mM Tris-HCl buffer (pH 8.0), 0.2M NaCl, 50% glycerol and 5mM DTT. |
| Purity |
Greater than 90% as determined by SDS-PAGE. |
| Description |
NELFE Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 403 amino acids (1-380) and having a molecular mass of 45.6 kDa.NELFE is fused to a 23 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques. |
| Protein Background |
NELFE is a vital component of NELF complex which represses RNA polymerase II transcript elongation. NELFE is similar to nuclear RNA-binding proteins but does not bind RNA. NELFE contains a tract of alternating basic and acidic residues, mainly arginine and aspartic acid. |
| Expression host |
E.coli. |
| Synonyms |
Negative elongation factor E, NELF-E, RNA-binding protein RD, NELFE, RD, RDBP, Negative Elongation Factor Complex Member E, D6S45, RDP. |
| Reagent Appearance |
Sterile Filtered colorless solution. |
| Stability |
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles. |
| Amino acid sequence |
MGSSHHHHHH SSGLVPRGSH MGSMLVIPPG LSEEEEALQK KFNKLKKKKK ALLALKKQSS SSTTSQGGVK RSLSEQPVMD TATATEQAKQ LVKSGAISAI KAETKNSGFK RSRTLEGKLK DPEKGPVPTF QPFQRSISAD DDLQESSRRP QRKSLYESFV SSSDRLRELG PDGEEAEGPG AGDGPPRSFD WGYEERSGAH SSASPPRSRS RDRSHERNRD RDRDRERDRD RDRDRDRERD RDRDRDRDRD RERDRDRERD RDRDREGPFR RSDSFPERRA PRKGNTLYVY GEDMTPTLLR GAFSPFGNII DLSMDPPRNC AFVTYEKMES ADQAVAELNG TQVESVQLKV NIARKQPMLD AATGKSVWGS LAVQNSPKGC HRDKRTQIVY SDDVYKENLV DGF. |
