4-phytase

The enzyme 4-phytase (EC 3.1.3.26) catalyzes the following reaction:^[1]

myo-inositol hexakisphosphate + H₂O ${\displaystyle \rightleftharpoons }$ 1D-myo-inositol 1,2,3,5,6-pentakisphosphate + phosphate

4-phytase
Identifiers
EC no.	3.1.3.26
CAS no.	9001-89-2
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / QuickGO
Search PMC articles PubMed articles NCBI proteins

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 of this enzyme class is myo-inositol-hexakisphosphate 4-phosphohydrolase. Other names in common use include 6-phytase (name based on 1L-numbering system and not 1D-numbering) and phytate 6-phosphatase.

Enzymes of this type participate in inositol phosphate metabolism.

See also

• 3-phytase (1-phytase)
• 5-phytase
• Protein tyrosine phosphatase