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These enzymes belongs to the family ofhydrolases, specifically those acting on phosphoricmonoester bonds. Thesystematic namemyo-inositol-hexakisphosphate 3-phosphohydrolase. Other names in common use include1-phytase,phytate 1-phosphatase,phytate 3-phosphatase, andphytate 6-phosphatase.^[1]

Enzymes of this type participate ininositol phosphate metabolism.

Structural studies

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As of late 2007, 12structures have been solved for this class of enzymes, withPDB accession codes1CVM,1IHP,1POO,1QFX,1QLG,1QWO,1SK8,1SK9,1SKA,1SKB,2GFI, and2POO.

References

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^^a ^b"ENZYME entry 3.1.3.8".enzyme.expasy.org. Retrieved2018-04-09.
^Mullaney EJ, Ullah AH (December 2003). "The term phytase comprises several different classes of enzymes".Biochemical and Biophysical Research Communications.312 (1):179–84.doi:10.1016/j.bbrc.2003.09.176.PMID 14630039.

Hydrolase:esterases (EC 3.1)

3.1.1:Carboxylic
ester hydrolases

Lipase

Phospholipase
- A1
- A2
- B

3.1.2:Thioesterase

3.1.3:Phosphatase

3.1.4:
Phosphodiesterase

3.1.6:Sulfatase

Nuclease (includes
deoxyribonuclease
andribonuclease)

3.1.11-16:
Exonuclease

Exodeoxyribonuclease	RecBCD
Exoribonuclease	Oligonucleotidase

3.1.21-31:
Endonuclease

Endodeoxyribonuclease	Deoxyribonuclease I Deoxyribonuclease II Deoxyribonuclease IV Restriction enzyme;see{{Restriction enzyme}} UvrABC endonuclease
Endoribonuclease	RNase III Drosha:Microprocessor complex Dicer:RNA-induced silencing complex RNase H 1 2A 2B 2C RNase P RNase A RNase Z RNase E 1 2 3 4/5 RNase T1
either deoxy- or ribo-	Nuclease S1 Mung bean nuclease Serratia marcescens nuclease Micrococcal nuclease

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1Oxidoreductases (list) EC2Transferases (list) EC3Hydrolases (list) EC4Lyases (list) EC5Isomerases (list) EC6Ligases (list) EC7Translocases (list)

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Structural studies

See also

References