0 item(s)

Pteridin-4 (2.5mg) - 60 capsules (formerly BH4 - TetrahydroBiopterin)

Double click on above image to view full picture

Zoom Out
Zoom In

More Views

  • Pteridin-4 (2.5mg) - 60 capsules (formerly BH4 - TetrahydroBiopterin)
  • Ecological Formulas

Pteridin-4 (2.5mg) - 60 capsules (formerly BH4 - TetrahydroBiopterin)

Quick Overview

This product ships with Ice Packs and it is not returnable or refundable.





$92.00
  • Buy 3 for $90.00 each and save 3%
OR

Details

This product ships with Ice Packs and it is not returnable or refundable.

*** THIS PRODUCT SHIPS WITH AN ICE PACK HOWEVER IT WILL ARRIVE WITH THE ICE-PACK MELTED AND THE BH4 WILL BE AT REGULAR ROOM TEMP OR A BIT WARMER DEPENDING ON YOUR LOCATION.

PLEASE NOTE THAT IF YOU SELECT OUR FREE SHIPPING OPTION, YOUR ORDER WILL ARRIVE BY REGULAR MAIL OR UPS GROUND WHICH MAY TAKE UP TO A WEEK IN SOME CASES. IF YOU ARE CONCERNED ABOUT LONG DELIVERY FOR THIS PRODUCT WE RECOMMEND YOU SELECT EXPRESS (2-DAY SHIPPING INSTEAD).

 

History

Tetrahydrobiopterin was discovered to play a role as an enzymatic cofactor. The first enzyme found to use tetrahydrobiopterin is phenylalanine hydroxylase (PAH).

Biosynthesis

Tetrahydrobiopterin is biosynthesized from guanosine triphosphate (GTP) by three chemical reactions mediated by the enzymes GTP cyclohydrolase I (GTPCH), 6-pyruvoyltetrahydropterin synthase (PTPS), and sepiapterin reductase (SR).

Functions

Tetrahydrobiopterin has the following responsibilities as a cofactor:

  • Tryptophan hydroxylase (TPH) for the conversion of L-tryptophan (TRP) to 5-hydroxytryptophan (5-HTP)
  • Phenylalanine hydroxylase (PAH) for conversion of L-phenylalanine (PHE) to L-tyrosine (TYR)
  • Tyrosine hydroxylase (TH) for the conversion of L-tyrosine to L-DOPA (DOPA)
  • Nitric oxide synthase (NOS) for conversion of a guanidino nitrogen of L-arginine (L-Arg) to nitric oxide (NO)
  • Alkylglycerol monooxygenase (AGMO) for the conversion of 1-alkyl-sn-glycerol to 1-hydroxyalkyl-sn-glycerol

Additional Information

SKU BH4

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

Please wait...