Introduction
NDRG1, a cytoplasmic protein, plays a crucial role in various cellular processes such as stress and hormone responses, cell growth, and differentiation. As a member of the NDRG ?/?-hydrolase family, it is recognized for its tumor suppressor and heavy metal-response properties. Its diverse functions include cell-cycle regulation, cellular differentiation, apoptosis, hypoxia response, and metal-ion sensing. Notably, NDRG1 is vital for p53-mediated caspase activation and apoptosis. Acting as a Rab4a effector, it participates in the vesicular recycling of E-cadherin. NDRG1 is ubiquitously expressed, with prominent presence in placental membranes, prostate, kidney, small intestine, and ovary tissues. Interestingly, its expression is reduced in adenocarcinomas compared to normal tissues. Mutations in the NDRG1 gene have been linked to hereditary motor and sensory neuropathy-Lom (HMSNL), a severe autosomal recessive form of Charcot-Marie-Tooth (CMT) disease. Furthermore, decreased NDRG1 expression in glioma is associated with tumor progression, while its overexpression is connected to the malignant status of esophageal cancer. NDRG1 may also play a role in portal vein invasion and intrahepatic metastasis in human hepatocellular carcinoma.
Description
Recombinant human NDRG1, fused with an 8 amino acid His tag at the C-terminus, is produced in E.Coli. This non-glycosylated polypeptide chain comprises 402 amino acids (1-394 a.a.) and has a molecular weight of 43.9 kDa. The purification of NDRG1 is achieved through proprietary chromatographic techniques.
Physical Appearance
Clear, colorless solution, sterile filtered.
Formulation
The NDRG1 solution is supplied in 20mM Tris-HCl buffer (pH 8.0), containing 0.1mM PMSF and 10% Glycerol.
Stability
For short-term storage (up to 4 weeks), the entire vial can be stored at 4°C. For extended storage, it is recommended to freeze the solution at -20°C. The addition of a carrier protein (0.1% HSA or BSA) is advised for long-term storage. It is important to avoid repeated freeze-thaw cycles.
Purity
The purity of NDRG1 is determined to be greater than 95.0% by SDS-PAGE analysis.
Biological Activity
The biological activity of NDRG1 is assessed using a cell proliferation assay with MCF7 cells. The ED50 for this effect ranges from 0.5 to 1.5 ng/ml, corresponding to a Specific Activity of 666,000 to 2,000,000 IU/mg.
Synonyms
Protein NDRG1, N-myc downstream-regulated gene 1 protein, Differentiation-related gene 1 protein, Reducing agents and tunicamycin-responsive protein, Nickel-specific induction protein Cap43, DRG-1, RTP, Rit42, NDRG1, CAP43, DRG1, GC4, NDR1, NMSL, TDD5, CMT4D, HMSNL, TARG1, PROXY1.
Amino Acid Sequence
MSREMQDVDL AEVKPLVEKG ETITGLLQEF DVQEQDIETL HGSVHVTLCG TPKGNRPVIL TYHDIGMNHK TCYNPLFNYE DMQEITQHFA
VCHVDAPGQQ DGAASFPAGY MYPSMDQLAE MLPGVLQQFG LKSIIGMGTG AGAYILTRFA LNNPEMVEGL VLINVNPCAE GWMDWAASKI SGWTQALPDM VVSHLFGKEE MQSNVEVVHT YRQHIVNDMN PGNLHLFINA YNSRRDLEIE RPMPGTHTVT LQCPALLVVG DSSPAVDAVV ECNSKLDPTK TTLLKMADCG GLPQISQPAK LAEAFKYFVQ GMGYMPSASM TRLMRSRTAS GSSVTSLDGT RSRSHTSEGT RSRSHTSEGT RSRSHTSEGA HLDITPNSGA AGNSAGPKSM EVSCLEHHHH HH