Recombinant Human Retinoblastoma-Associated Protein Fragment, 137a.a. with His-tag (rHuRb137,His)
p105-Rb, pRb, pp110
MASFPSSPLR IPGGNIYISP LKSPYKISEG LPTPTKMTPR SRILVSIGES FGTSEKFQKI NQMVCNSDRV LKRSAEGSNP PKPLKKLRFD IEGSDEADGS KHLPGESKFQ QKLAEMTSTR TRMQKQKMND SMDTSNKEEK HHHHHH
Rb encoded by the RB1 gene in humans, is expressed by retina and belongs to the etinoblastoma-associated protein family. The hole protein consists of 928 a.a. and the rHuRb fragment occupies sequence of 792-929 a.a.. Rb is a key regulator of entry into cell division that acts as a tumor suppressor. It has many functions, for example, promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C, and acts as a transcription repressor of E2F1 target genes and so on. The rHuRb is the region that rich of modified residue like phosphothreonine and N6-acetyllysine.
Approximately 16.5 kDa, a single non-glycosylated polypeptide chain containing 146 amino acids.
Sterile Filtered White lyophilized (freeze-dried) powder.
Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.
Less than 1 EU/ug of rHuRb137, His as determined by LAL method.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 °C. Further dilutions should be made in appropriate buffered solutions.
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.- 12 months from date of receipt, -20 to -70 °C as supplied.- 1 month, 2 to 8 °C under sterile conditions after reconstitution.- 3 months, -20 to -70 °C under sterile conditions after reconstitution.
1. Lee WH, Shew JY, Hong FD, et al. 1987. Nature, 329: 642-5.2. Lee WH, Bookstein R, Hong F, et al. 1987. Science, 235: 1394-9.3. Toguchida J, McGee TL, Paterson JC, et al. 1993. Genomics, 17: 535-43.4. Fattaey AR, Helin K, Dembski MS, et al. 1993. Oncogene, 8: 3149-56.
> 95 % by SDS-PAGE and HPLC analyses.
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