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P3895

Sigma-Aldrich

Phosphatase, Alkaline from human placenta

≥10 units/mg solid (in glycine buffer)

Synonym(s):

Orthophosphoric-monoester phosphohydrolase (alkaline optimum)

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About This Item

CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

solid

Quality Level

specific activity

≥10 units/mg solid (in glycine buffer)

UniProt accession no.

storage temp.

−20°C

Gene Information

human ... ALPP(250)

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Application

Alkaline phosphatase is used for conjugation to antibodies and other proteins for ELISA, Western blotting, and histochemical detection. It is routinely used to dephosphorylate proteins and nucleic acids. It may be used for protein labeling when high sensitivity is required. Alkaline phosphatase may be also be used to dephosphorylate the 5′-termini of DNA or RNA to prevent self-ligation. DNA or RNA can also be tagged with radiolabeled phosphate (via T4 polynucleotide kinase) after dephosphorylation with alkaline phosphatase.

Biochem/physiol Actions

Alkaline phosphatase dephosphorylates proteins and nucleic acids. Human placental alkaline phosphatase (PLAP) has an unique residue, Glu-429. It is an allosteric enzyme that is uncompetitively inhibited by L-Phe, L-Trp, and L-Leu. PLAP is post-translationally modified. Phosphatidylinositol-specific phospholipase C may be involved in the release of PLAP. PLAP may have a role in cell division and may be involved in the transfer of maternal IgG to the fetus[1].

Unit Definition

One unit will hydrolyze 1 μmole of 4-nitrophenyl phosphate per minute at pH 10.4 at 37 °C.

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Yongliang Yang et al.
Chemical biology & drug design, 78(6), 923-931 (2011-09-14)
Human placental alkaline phosphatase has been identified as a hydrolase that is significantly overexpressed on the surface of various solid tumor cells, and is therefore a suitable prodrug design target for non-invasive cancer imaging and therapy. Structure-based prediction of enzymatic
Mary F O'Leary et al.
Nutrients, 13(12) (2021-12-29)
Shatavari has long been used as an Ayurvedic herb for women's health, but empirical evidence for its effectiveness has been lacking. Shatavari contains phytoestrogenic compounds that bind to the estradiol receptor. Postmenopausal estradiol deficiency contributes to sarcopenia and osteoporosis. In
M H Le Du et al.
The Journal of biological chemistry, 276(12), 9158-9165 (2001-01-01)
Human placental alkaline phosphatase (PLAP) is one of three tissue-specific human APs extensively studied because of its ectopic expression in tumors. The crystal structure, determined at 1.8-A resolution, reveals that during evolution, only the overall features of the enzyme have
A D Bakker et al.
Journal of dental research, 93(4), 394-399 (2014-02-05)
Mechanosensitive osteocytes regulate bone mass in adults. Interleukin 6 (IL-6), such as present during orthodontic tooth movement, also strongly affects bone mass, but little is known about the effect of IL-6 on osteocyte function. Therefore we aimed to determine in
Jong Kil Lee et al.
The Journal of experimental medicine, 211(8), 1551-1570 (2014-07-23)
In Alzheimer's disease (AD), abnormal sphingolipid metabolism has been reported, although the pathogenic consequences of these changes have not been fully characterized. We show that acid sphingomyelinase (ASM) is increased in fibroblasts, brain, and/or plasma from patients with AD and

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