Introduction
Mitogen-activated protein kinase 9 (MAPK9), also known as JNK2, is a member of the MAP kinase family. These kinases play a crucial role in cellular signaling, acting as a central hub for various biochemical signals. They are implicated in a wide array of cellular processes, including cell growth and division (proliferation), specialization of cells (differentiation), regulation of gene expression (transcription regulation), and overall development. MAPK9 specifically targets and regulates transcription factors, thereby controlling the expression of immediate-early genes in response to diverse cellular stimuli. Functioning as an active dimer, MAPK9 can translocate to the nucleus, where it influences transcription through its interactions with transcription factors such as c-Jun, ATF-2, and others. Additionally, MAPK9 has been shown to inhibit the degradation of the tumor suppressor protein p53 by blocking its ubiquitination, thus enhancing p53 stability in unstressed cells.
Description
This product consists of the recombinant human MAPK9 protein, expressed in E. coli and purified to a high degree. The protein is a single, non-glycosylated polypeptide chain that encompasses amino acids 1 to 382 of the MAPK9 sequence. A 24 amino acid His-tag is fused to the N-terminus to facilitate purification. The molecular weight of the purified protein is 46.6 kDa.
Physical Appearance
The product is a clear, colorless solution that has been sterilized by filtration.
Formulation
The MAPK9 protein is supplied in a solution at a concentration of 1 mg/ml. The solution also contains 20mM Tris-HCl buffer (pH 8.0), 0.1M NaCl, 10% glycerol, and 1mM DTT.
Stability
For short-term storage (up to 2-4 weeks), the product can be stored at 4°C. For extended storage, it is recommended to freeze the product at -20°C. To ensure optimal stability during long-term storage, adding a carrier protein such as HSA or BSA to a final concentration of 0.1% is advised. Repeated freezing and thawing of the product should be avoided.
Purity
Analysis by SDS-PAGE demonstrates that the purity of this product is greater than 95%.
Synonyms
Mitogen-activated protein kinase 9, MAP kinase 9, MAPK 9, JNK-55, Stress-activated protein kinase 1a, SAPK1a, Stress-activated protein kinase JNK2, c-Jun N-terminal kinase 2, MAPK9, JNK2, PRKM9, SAPK, p54a, JNK2A, JNK2B, JNK2BETA, p54aSAPK, JNK2ALPHA.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSHMSDSKC DSQFYSVQVA DSTFTVLKRY QQLKPIGSGA QGIVCAAFDT VLGINVAVKK LSRPFQNQTH AKRAYRELVL LKCVNHKNII SLLNVFTPQK TLEEFQDVYL VMELMDANLC QVIHMELDHE RMSYLLYQML CGIKHLHSAG IIHRDLKPSN IVVKSDCTLK ILDFGLARTA CTNFMMTPYV VTRYYRAPEV ILGMGYKENV DIWSVGCIMG ELVKGCVIFQ GTDHIDQWNK VIEQLGTPSA EFMKKLQPTV RNYVENRPKY PGIKFEELFP DWIFPSESER DKIKTSQARD LLSKMLVIDP DKRISVDEAL RHPYITVWYD PAEAEAPPPQ IYDAQLEERE HAIEEWKELI YKEVMDWEER SKNGVVKDQP SAQMQQ.