Showing Metabocard for 2,3-epoxyphylloquinone (BASm0000424)
Common Name | 2,3-epoxyphylloquinone |
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Description | Vitamin K1 2,3-epoxide (CAS: 25486-55-9) is a vitamin K derivative. Vitamin K is needed for the posttranslational modification of certain proteins, mostly required for blood coagulation. Within the cell, vitamin K undergoes electron reduction to a reduced form of vitamin K (called vitamin K hydroquinone) by the enzyme vitamin K epoxide reductase (or VKOR). Another enzyme then oxidizes vitamin K hydroquinone to allow carboxylation of glutamate into gamma-carboxyglutamate (Gla). This enzyme is called the gamma-glutamyl carboxylase or the vitamin K-dependent carboxylase. The carboxylation reaction will only proceed if the carboxylase enzyme is able to oxidize vitamin K hydroquinone into vitamin K epoxide at the same time; the carboxylation and epoxidation reactions are said to be coupled reactions. Vitamin K epoxide is then re-converted into vitamin K by the vitamin K epoxide reductase. These two enzymes comprise the so-called vitamin K cycle. One of the reasons why vitamin K is rarely deficient in a human diet is because vitamin K is continually recycled in our cells. Vitamin K 2,3-epoxide is the substrate for vitamin K 2,3-epoxide reductase (VKOR) complex. Significantly increased level of serum vitamin K epoxide has been found in patients with familial multiple coagulation factor deficiency (PMID: 12384421 ). Accumulation of vitamin K1-2,3-epoxide in plasma is also a sensitive marker of the coumarin-like activity of drugs (PMID: 2401753 ). |
Structure | |
Molecular Formula | C31H46O3 |
Average Mass | 466.70600 |
Monoisotopic Mass | 466.34470 |
IUPAC Name | 1a-methyl-7a-(3,7,11,15-tetramethylhexadec-2-en-1-yl)-1aH,2H,7H,7aH-naphtho[2,3-b]oxirene-2,7-dione |
Traditional Name | Vitamin k epoxide |
CAS Registry Number | 85955-78-8 |
SMILES | C/C(=C\CC12OC1(C)C(=O)c1ccccc1C2=O)CCC[C@H](C)CCC[C@H](C)CCCC(C)C |
InChI Identifier | InChI=1S/C31H46O3/c1-22(2)12-9-13-23(3)14-10-15-24(4)16-11-17-25(5)20-21-31-29(33)27-19-8-7-18-26(27)28(32)30(31,6)34-31/h7-8,18-20,22-24H,9-17,21H2,1-6H3/b25-20+/t23-,24-,30-,31+/m1/s1 |
InChI Key | KUTXFBIHPWIDJQ-BTPXSFBUSA-N |
CHEBI ID | CHEBI:15759 |
HMDB ID | HMDB0002972 |
Pathways | |
State | Solid |
Water Solubility | 2.24e-05 g/l |
logP | 8.28 |
logS | -7.32 |
pKa (Strongest Acidic) | Not Available |
pKa (Strongest Basic) | -4.37 |
Hydrogen Acceptor Count | 3 |
Hydrogen Donor Count | 0 |
Polar Surface Area | 46.67 Ų |
Rotatable Bond Count | 14 |
Physiological Charge | 0 |
Formal Charge | 0 |
Refractivity | 141.69 m³·mol⁻¹ |
Polarizability | 57.54 |