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Phosphatase, Acid from sweet potato

ammonium sulfate suspension, ≥10.0 units/mg protein (modified Warburg-Christian)

(Orthophosphoric-monoester phosphohydrolase [acid optimum] )
Número CAS:
Número da licença da enzima:
Número EC:
Número MDL:

Nível de qualidade



ammonium sulfate suspension

specific activity

≥10.0 units/mg protein (modified Warburg-Christian)

secondary activity

≤9.9 units/mg protein ATPase

peso molecular

110 kDa

temperatura de armazenamento


Descrição geral

Acid phosphatase from sweet potato is a phosphomonoesterase, which can appear in multiple molecular forms of similar molecular mass but with different isoelectric points.


Sweet potato acid phosphatase has been used in a study as a pre-column enzyme reactor via a covalent bond with glutaraldehyde and aminopropyl controlled-pore glass. It has also been used in a study to investigate the use of tyrosine, histidine, and cysteine as ligands for Mn(III) in sweet potato phosphatase.
Potato acid phosphatase is used as a dephosphorylating reagent in thiochrome assays for the detection of thiamin in biological samples. In this assay, it was shown to be more effective than acid phosphatases from wheat germ or α-amylase.

Ações bioquímicas/fisiológicas

Acid phosphatases (APase) are a family of enzymes that non-specifically catalyze the hydrolysis of monoesters and anhydrides of phosphoric acid to produce inorganic phosphate at an optimum pH of 4 to 7 by the following reaction: APaseR-PO4 + H2O --------------- R-OH + HOPO3 2+Their function in the production, transport, and recycling of phosphate is critical for the metabolic and energy transduction processes of the cell. As a group, Apases may be as important as kinases in regulatory processes.

Definição da unidade

One unit will hydrolyze 1.0 μmole of p-nitrophenyl phosphate per min at pH 4.8 at 37 °C.

forma física

Suspension in 1.8 M (NH4)2SO4, 10 mM MgCl2, pH 5.3

Storage Class Code

12 - Non Combustible Liquids



Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)

Certificado de análise

Certificado de origem

G Schenk et al.
Archives of biochemistry and biophysics, 370(2), 183-189 (1999-10-08)
Purple acid phosphatases comprise a family of binuclear metal-containing acid hydrolases, representatives of which have been found in animals, plants, and fungi. The goal of this study was to characterize purple acid phosphatases from sweet potato tubers and soybean seeds...
Susumu Yamato et al.
Biological & pharmaceutical bulletin, 27(2), 210-215 (2004-02-06)
Sweet potato acid phosphatase was covalently coupled with glutaraldehyde to aminopropyl controlled-pore glass, and used as a pre-column enzyme reactor. The immobilized enzyme reactor (IMER) was continuously operated using an automated chromatographic detection system we developed. Functional evaluation of the...
Tatsuya Kusudo et al.
Bioscience, biotechnology, and biochemistry, 67(7), 1609-1611 (2003-08-13)
Purple acid phosphatase (PAP) was purified from sweet potato dry powder, which is used as a food additive. Spectrometric and enzymatic analyses, and analysis of the amino-terminal sequence indicated that the purified purple acid phosphatase was PAP1. High activity in...
An unstable manganese(III) complex incorporating ligand donor types proposed for an acid phosphatase from sweet potato: (p-nitrobenzenethiolato)[N,N'-ethylenebis(salicylideneaminato)]manganese(III)
Gohdes, J. and W. Armstrong
Inorganic Chemistry, 27, 1841-1842 (1988)
D T Wyatt et al.
Clinical chemistry, 35(11), 2173-2178 (1989-11-01)
We analyzed extensively a modified thiochrome method for thiamin analysis. Acid phosphatase (EC from potato was superior to either alpha-amylase or acid phosphatase from wheat germ as a dephosphorylating agent. Timing of cyanogen bromide exposure was important, but the...


How to Work with Enzymes Supplied as Ammonium Sulfate Suspensions

Instructions for working with enzymes supplied as ammonium sulfate suspensions


Enzymatic Assay of Acid Phosphatase (EC

Enzymatic Assay of Acid Phosphatase (EC

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