Dihydropteridine Reductase/QDPR, Recombinant Protein

Dihydropteridine Reductase; HDHPR; Quinoid Dihydropteridine Reductase; QDPR; DHPR

For Research Use Only. Not for use in diagnostic procedures.

Human Cells

>95% as determined by reducing SDS-PAGE.

Lyophilized from a 0.2 mum filtered solution of 20mM Tris HCl, pH 8.0.

Lyophilized protein should be stored at < -20 degree C, though stable at room temperature for 3 weeks.
Reconstituted protein solution can be stored at 4-7 degree C for 2-7 days. Aliquots of reconstituted samples are stable at < -20 degree C for 3 months.

Manufactured in an ISO 9001:2015 Certified Laboratory.

Small volumes of QDPR recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Dihydropteridine reductase, also known as HDHPR and Quinoid dihydropteridine reductase, QDPR and DHPR, belongs to the short-chain dehydrogenases/reductases (SDR) family. QDPR exists as a homodimer. QDPR is part of the pathway that recycles a substance called tetrahydrobiopterin, also known as BH4 and tryptophan hydroxylases. The regeneration of this substance is critical for the proper processing of several other amino acids in the body. Tetrahydrobiopterin also helps produce certain chemicals in the brain called neurotransmitters, which transmit signals between nerve cells. Defects in QDPR are the cause of BH4-deficient hyperphenylalaninemia type C (HPABH4C) which is a rare autosomal recessive disorder and is lethal.

Molecular Mass: 26.8 kDa
Actual Protein Molecular Mass: 29 kDa

quinoid dihydropteridine reductase

dihydropteridine reductase

Dihydropteridine reductase

DHPR; SDR33C1  [Similar Products]

This gene encodes the enzyme dihydropteridine reductase, which catalyzes the NADH-mediated reduction of quinonoid dihydrobiopterin. This enzyme is an essential component of the pterin-dependent aromatic amino acid hydroxylating systems. Mutations in this gene resulting in QDPR deficiency include aberrant splicing, amino acid substitutions, insertions, or premature terminations. Dihydropteridine reductase deficiency presents as atypical phenylketonuria due to insufficient production of biopterin, a cofactor for phenylalanine hydroxylase. [provided by RefSeq, Jul 2008]

The product of this enzyme, tetrahydrobiopterin (BH-4), is an essential cofactor for phenylalanine, tyrosine, and tryptophan hydroxylases.

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