Introduction
UDP-glucose dehydrogenase (UGDH) is a critical enzyme involved in the biosynthesis of glycosaminoglycans, essential components of the extracellular matrix. It belongs to the UDP-glucose/GDP-mannose dehydrogenase family and is ubiquitously expressed, with a predominant presence in the liver. UGDH catalyzes the conversion of UDP-glucose to UDP-glucuronate, a key step in the formation of glycosaminoglycans such as hyaluronan, chondroitin sulfate, and heparan sulfate. These complex carbohydrates play vital roles in various cellular processes, including signal transduction, cell migration, and have implications in cancer progression.
Description
Recombinant Human UGDH, expressed in E. coli, is available as a purified, non-glycosylated polypeptide chain. This protein consists of 533 amino acids, with a sequence encompassing residues 1-494, resulting in a molecular weight of 59.5 kDa. For purification and detection purposes, a 39 amino acid His-Tag is fused to the N-terminus. The protein is purified using proprietary chromatographic techniques to ensure high purity.
Physical Appearance
Clear, colorless solution, sterile-filtered.
Formulation
The provided solution contains 0.5mg/ml of Human UGDH in a buffer consisting of 20mM Tris-HCl (pH 8), 1mM DTT, 1mM EDTA, 0.1M NaCl, and 20% glycerol.
Stability
For short-term storage (2-4 weeks), the solution can be stored at 4°C. For extended storage, it is recommended to store the protein at -20°C. To further enhance long-term stability, consider adding a carrier protein (0.1% HSA or BSA). It is crucial to avoid repeated freeze-thaw cycles to maintain protein integrity and activity.
Purity
The purity of the UGDH protein is greater than 95%, as determined by SDS-PAGE analysis.
Biological Activity
The enzyme exhibits a specific activity greater than 2500 pmol/min/µg. This activity is determined by measuring the enzyme's ability to convert UDP-glucose to UDP-glucuronate at a rate of 1.0 pmole per minute per microgram of enzyme at a pH of 8.7 and a temperature of 37°C.
Synonyms
GDH, UDP-GlcDH, UDPGDH, UGD, EC=1.1.1.22, UDP-Glc dehydrogenase, UDP-glucose 6-dehydrogenase, UGDH.
Amino Acid Sequence
MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSELEM FEIKKICCIG AGYVGGPTCS VIAHMCPEIR VTVVDVNESR INAWNSPTLP IYEPGLKEVV ESCRGKNLFF STNIDDAIKE ADLVFISVNT PTKTYGMGKG RAADLKYIEA CARRIVQNSN GYKIVTEKST VPVRAAESIR RIFDANTKPN LNLQVLSNPE FLAEGTAIKD LKNPDRVLIG GDETPEGQRA VQALCAVYEH WVPREKILTT NTWSSELSKL AANAFLAQRI SSINSISALC EATGADVEEV ATAIGMDQRI GNKFLKASVG FGGSCFQKDV LNLVYLCEAL NLPEVARYWQ QVIDMNDYQR RRFASRIIDS LFNTVTDKKI AILGFAFKKD TGDTRESSSI YISKYLMDEG AHLHIYDPKV PREQIVVDLS HPGVSEDDQV SRLVTISKDP YEACDGAHAV VICTEWDMFK ELDYERIHKK MLKPAFIFDG RRVLDGLHNE LQTIGFQIET IGKKVSSKRI PYAPSGEIPK FSLQDPPNKK PKV.