P1253
Phosvitin from egg yolk
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About This Item
Form:
powder
Biological source:
egg yolk
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General description
Phosvitin from egg yolk is a polyanionic phosphoserine rich protein. This phosphoglycoprotein comprises α-helices and β-sheets structural elements, which are poorly organized due to the presence of phosphoserine. It represents about 11% of yolk proteins and is hydrophilic.
Application
Phosvitin from egg yolk has been used:
- as a control protein for immobilization on-chip for deep purple protein staining methods for monitoring post-translation modifications
- as a substrate for casein kinase Iε in in vitro casein kinase assay
- as a standard in gel filtration chromatography (GFC) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) for quantification of phosvitin from egg extracts
- for immobilization onto Layer-by-Layer (LbL) for Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR) studies
Biochem/physiol Actions
Phosvitin fed to rats by adding egg yolk to their food resulted in decreased absorption of magnesium, iron and calcium but not of phosphorus.
Phosvitin from egg yolk is a calcium chelator and binds to iron present in the yolk. The metal-binding functionality is exploited in mineral-binding bioactive peptide production. It is a nutraceutical and has potential for phosphopeptides production.
Other Notes
A phosophoprotein containing 8-10% phosphorus. Molar N/P ratio approx. 2.7.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Regulatory Information
动植物来源生物产品
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K Abdelkebir et al.
Acta biomaterialia, 8(9), 3419-3428 (2012-06-12)
Carboxylated, sulfated and/or phosphorylated surfaces are admitted as potential optimal templates for biomimetic deposition of calcium phosphate (CaP) coatings in view of improving implants' osseointegration. Layer-by-layer films were built up consisting of anionic chondroitin sulfate (ChS), a biological carboxylated and
Shuichi Ito et al.
Journal of biomedical materials research. Part A, 100(10), 2760-2765 (2012-05-25)
The aim of this study is to evaluate the mineralizing potential of acidic monomers and their calcium salts for mineralization, using an in vitro mineral induction model. Phosvitin (PV) was used as a model phosphoprotein in this study. PV was
Samooel Jung et al.
Food chemistry, 135(3), 993-998 (2012-09-08)
Phosvitin is a phosphoglycoprotein present in egg yolk. More than half of the amino acids in phosvitin molecule are serine, of which >90% are phosphorylated. Therefore, phosvitin has a strong metal binding capability. The aim of this study was to
K Y Ko et al.
Poultry science, 90(5), 1096-1104 (2011-04-15)
The objective of this study was to develop a new protocol that could be used for large-scale separation of phosvitin from egg yolk using ethanol and salts. Yolk granules, which contain phosvitin, were precipitated after diluting egg yolk with 9
Shuichi Ito et al.
Journal of dentistry, 39(1), 72-79 (2010-10-26)
The aim of this study was to evaluate the mineralizing potential of ions released from surface pre-reacted glass-ionomer (S-PRG) fillers on mineral induction by phosphoprotein in vitro. Phosvitin was used as a model of dentin phosphoprotein in this study. Phosvitin
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