3-phytase explained

3-phytase
Ec Number:	3.1.3.8
Cas Number:	37288-11-2
Go Code:	0016158

The enzyme 3-phytase (EC 3.1.3.8) catalyzes the reaction^{[1] [2]}

myo-inositol hexakisphosphate + H₂O = 1D-myo-inositol 1,2,4,5,6-pentakisphosphate + phosphate

myo-Inositol hexakisphosphate is also known as phytic acid.

These enzymes belongs to the family of hydrolases, specifically those acting on phosphoric monoester bonds. The systematic name myo-inositol-hexakisphosphate 3-phosphohydrolase. Other names in common use include 1-phytase, phytate 1-phosphatase, phytate 3-phosphatase, and phytate 6-phosphatase.

Enzymes of this type participate in inositol phosphate metabolism.

Structural studies

As of late 2007, 12 structures have been solved for this class of enzymes, with PDB accession codes,,,,,,,,,,, and .

See also

• 4-phytase (6-phytase)
• 5-phytase
• Protein tyrosine phosphatase

Notes and References

1. Web site: ENZYME entry 3.1.3.8. enzyme.expasy.org. en-US. 2018-04-09.
2. Mullaney EJ, Ullah AH . The term phytase comprises several different classes of enzymes . Biochemical and Biophysical Research Communications . 312 . 1 . 179–84 . December 2003 . 14630039 . 10.1016/j.bbrc.2003.09.176 .