產(chǎn)品屬性：

Cas No.22150-76-1

別名 L-erythro-Biopterin,NSC 339699

化學(xué)名 2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-4(1H)-pteridinone

分子式 C9H11N5O3

分子量 237.2

溶解度 ≤1mg/ml in DMSO;0.3mg/ml in dimethyl formamide

儲(chǔ)存條件 Store at -20°C
General tips  For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.
Shipping Condition     Evaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request
產(chǎn)品描述：
L-Biopterin is the oxidized form of tetrahydrobiopterin (BH4) [1].

Tetrahydrobiopterin (BH4) has been also known as sapropterin. BH4 is an essential cofactor of the three aromatic amino acid hydroxylase enzymes which has used in the degradation of amino acid phenylalanine and in the biosynthesis of the neurotransmitters serotonin (5-HT), melatonin, norepinephrine, dopamine, epinephrine (adrenaline). BH4 is a cofactor of nitric oxide synthases [2].

L-Biopterin was reduced to BH4 via thioredoxin reductase followed by dihydropteridine reductase or reduced glutathione. L-Biopterin was extremely toxic to human melanocytes in culture with the IC50 of 0.2 μM after 48 hrs. L-Biopterin was rarely existed under physiological conditions except in the epidermis of patients with the depigmentation disorder Vitiligo [3].

References:

[1] Schallreuter K U, Buttner G, Pittelkow M R, et al.  Cytotoxicity of 6-biopterin to human melanocytes[J]. Biochemical and biophysical research communications, 1994, 204(1): 43-48.

[2] Calka J.  The role of nitric oxide in the hypothalamic control of LHRH and oxytocin release, sexual behavior and aging of the LHRH and oxytocin neurons[J]. Folia Histochemica et Cytobiologica, 2006, 44(1): 3.

[3] Moore J, Wood J M, Schallreuter K U.  Evidence for Specific Complex Formation between α-Melanocyte Stimulating Hormone and 6 (R)-l-Erythro-5, 6, 7, 8-tetrahydrobiopterin using Near Infrared Fourier Transform Raman Spectroscopy[J]. Biochemistry, 1999, 38(46): 15317-15324.