PKM2 Mouse

Tumour Type M2 Pyruvate Kinase Mouse Recombinant
Cat. No.
BT13819
Source
Escherichia Coli.
Synonyms

Pyruvate kinase isozymes M1/M2, EC 2.7.1.40, Pyruvate kinase muscle isozyme, Pyruvate kinase 2/3, Cytosolic thyroid hormone-binding protein, CTHBP, THBP1, M2PK, PKM2, PK3, PK2, PKM, TCB, OIP3, MGC3932, Tumor Type M2 Pyruvate Kinase.

Appearance
Sterile Filtered clear solution.
Purity

Greater than 85% as determined by SDS-PAGE.

Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

PKM2 Mouse Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 554 amino acids (1-531 a.a) and having a molecular mass of 60.2kDa. PKM2 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Product Specs

Introduction
Pyruvate kinase is a crucial enzyme in the glycolytic pathway. The M2 isoenzyme of pyruvate kinase exhibits high expression levels in tumor cells and can be quantified in the plasma of patients diagnosed with advanced breast cancer. This marker proves valuable in monitoring disease activity, assessing chemotherapy sensitivity, and detecting recurrence.
Description
Recombinant PKM2 Mouse protein, expressed in E. coli, is a single, non-glycosylated polypeptide chain comprising 554 amino acids (1-531 a.a) with a molecular weight of 60.2kDa. A 23 amino acid His-tag is fused to the N-terminus of PKM2, and the protein undergoes purification using proprietary chromatographic methods.
Physical Appearance
Clear solution subjected to sterile filtration.
Formulation
PKM2 protein solution at a concentration of 0.5mg/ml. The solution contains 20mM Tris-HCl (pH 8.5), 0.2M NaCl, 1mM DTT, and 30% glycerol.
Stability
For short-term storage (2-4 weeks), maintain at 4°C. For extended periods, store frozen at -20°C. The addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage. Avoid repeated freeze-thaw cycles.
Purity
Purity exceeds 85% as assessed by SDS-PAGE.
Biological Activity
Specific activity: greater than 500 units/mg. One unit is defined as the amount of enzyme required to catalyze the conversion of 1 picomole of phospho(enol)pyruvate to pyruvate per minute at pH 7.5 and a temperature of 37°C.
Synonyms

Pyruvate kinase isozymes M1/M2, EC 2.7.1.40, Pyruvate kinase muscle isozyme, Pyruvate kinase 2/3, Cytosolic thyroid hormone-binding protein, CTHBP, THBP1, M2PK, PKM2, PK3, PK2, PKM, TCB, OIP3, MGC3932, Tumor Type M2 Pyruvate Kinase.

Source
Escherichia Coli.
Amino Acid Sequence

MGSSHHHHHH SSGLVPRGSH MGSMPKPHSE AGTAFIQTQQ LHAAMADTFL EHMCRLDIDS APITARNTGI ICTIGPASRS VEMLKEMIKS GMNVARLNFS HGTHEYHAET IKNVREATES FASDPILYRP VAVALDTKGP EIRTGLIKGS GTAEVELKKG ATLKITLDNA YMEKCDENIL WLDYKNICKV VEVGSKIYVD DGLISLQVKE KGADFLVTEV ENGGSLGSKK GVNLPGAAVD LPAVSEKDIQ DLKFGVEQDV DMVFASFIRK AADVHEVRKV LGEKGKNIKI ISKIENHEGV RRFDEILEAS DGIMVARGDL GIEIPAEKVF LAQKMMIGRC NRAGKPVICA TQMLESMIKK PRPTRAEGSD VANAVLDGAD CIMLSGETAK GDYPLEAVRM QHLIAREAEA AIYHLQLFEE LRRLAPITSD PTEAAAVGAV EASFKCCSGA IIVLTKSGRS AHQVARYRPR APIIAVTRNP QTARQAHLYR GIFPVLCKDA VLNAWAEDVD LRVNLAMDVG KARGFFKKGD VVIVLTGWRP GSGFTNTMRV VPVP.

Product Science Overview

Introduction

Tumour Type M2 Pyruvate Kinase (PKM2) is a crucial enzyme in the glycolytic pathway, which is responsible for the conversion of phosphoenolpyruvate (PEP) to pyruvate, producing ATP in the process . PKM2 is one of the four isoforms of pyruvate kinase, the others being PKL, PKR, and PKM1 . This enzyme is particularly significant in cancer research due to its unique role in tumor metabolism and its potential as a diagnostic marker.

Isoforms of Pyruvate Kinase

Pyruvate kinase exists in four isoforms, each with tissue-specific expression:

  • PKL: Found in the liver.
  • PKR: Present in red blood cells.
  • PKM1: Expressed in tissues with high energy demands such as the brain, skeletal muscle, and heart.
  • PKM2: Found in early embryonic cells and proliferating cells, including tumor cells .
Role of PKM2 in Tumor Cells

PKM2 is predominantly expressed in tumor cells and exists mainly in its dimeric form, which has a lower affinity for PEP compared to its tetrameric form . This dimeric form, often referred to as Tumor M2-PK, is associated with the metabolic reprogramming of cancer cells, known as the Warburg effect . This effect describes how cancer cells preferentially produce energy through aerobic glycolysis rather than oxidative phosphorylation, even in the presence of sufficient oxygen .

Metabolic and Non-Metabolic Functions

In addition to its metabolic role, PKM2 has non-metabolic functions that contribute to tumorigenesis. It can translocate to the nucleus and act as a protein kinase, phosphorylating various targets and influencing multiple physiological processes . This dual functionality makes PKM2 a critical player in cancer cell metabolism and proliferation.

Diagnostic and Therapeutic Potential

The unique properties of PKM2, particularly its dimeric form in tumor cells, make it a valuable biomarker for cancer diagnosis and monitoring . Quantifying Tumor M2-PK in plasma and stool samples can aid in the early detection of tumors and in tracking the effectiveness of cancer therapies . Furthermore, targeting PKM2’s activity and its regulatory mechanisms holds promise for developing novel cancer treatments .

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