Beta-Trace catalyzes the conversion of PGH2 to PGD2， a prostaglandin involved in smooth muscle contraction/relaxation and a potent inhibitor of platelet aggregation. Involved in a variety of CNS functions， such as sedation， NREM sleep and PGE2-induced allodynia， and may have an anti-apoptotic role in oligodendrocytes. Binds small non-substrate lipophilic molecules， including biliverdin， bilirubin， retinal， retinoic acid and thyroid hormone， and may act as a scavenger for harmful hydrophopic molecules and as a secretory retinoid and thyroid hormone transporter. Possibly involved in development and maintenance of the blood-brain， blood-retina， blood-aqueous humor and blood-testis barrier. It is likely to play important roles in both maturation and maintenance of the central nervous system and male reproductive system.
It has been proposed that the urinary and serum levels may provide a sensitive indicator of renal damage in diabetes mellitus and hypertension. Elevated levels in the coronary circulation may also be associated with angina. Changes in charge and molecular weight microheterogeneity， due to modification of the N-linked oligosaccharides， may be associated with neurodegenerative disease and multiple sclerosis. Detected in meningioma but not in other brain tumors and may be considered a specific cell marker for meningioma.
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大肠杆菌中重组表达
溶解建议
Sterile Filtered White lyophilized （freeze-dried） powder. Filtered （0.4 micron） and lyophilized from 0.5 mg/ml in 20mM Tris buffer， 20mM NaCl， pH 7.5. It is recommended to reconstitute the lyophilized PTGDS in sterile 18MΩ-cm H2O not less than 100ug/ml， which can then be further diluted to other aqueous solutions.
保存建议
Lyophilized PTGDS although stable at room temperature for 3 weeks， should be stored desiccated below -18℃. Upon reconstitution PTGDS should be stored at 4℃ between 2-7 days and for future use below
-18℃.
For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）.
Please prevent freeze-thaw cycles.
