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Key Documents

C0880

Sigma-Aldrich

Conalbumin from chicken egg white

Iron complex

Synonym(s):

Ovotransferrin

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About This Item

CAS Number:
1391-06-6
EC Number:
215-727-0
MDL number:
MFCD00130856
UNSPSC Code:
12352202
NACRES:
NA.25

biological source

chicken egg white

Assay

≥95% (agarose gel electrophoresis)

form

powder

technique(s)

gel permeation chromatography (GPC): suitable

UniProt accession no.

P02789

storage temp.

−20°C

Gene Information

chicken ... TF(396241)

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General description

Iron-carrying proteins conalbumin and serum transferrin are synthesized with identical 19-amino-acid leader sequences that are removed during protein maturation. The leader sequences are presumably involved in secretion of the proteins by endoplasmic reticulum.

Application

Conalbumin (CA) is a monomeric glycoprotein that makes up approximately 13% of the albumin found in egg white. The iron complex of CA is more stable to chemical and physical treatments when compared to the uncomplexed proteins. At near neutral conditions, urea denaturation of CA modifies but does not destroy the iron complex.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H317,H334

Precautionary Statements

P261 - P280 - P342 + P311

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The denaturation of proteins. IV. Conalbumin and iron(III)-conalbumin in urea solution.
A N GLAZER et al.
Biochimica et biophysica acta, 71, 109-123 (1963-04-02)
The resistances of conalbumin and its iron complex to physical and chemical treatments.
P R AZARI et al.
Archives of biochemistry and biophysics, 92, 44-52 (1961-01-01)
S N Thibodeau et al.
The Journal of biological chemistry, 253(11), 3771-3774 (1978-06-10)
The NH2-terminal sequences of egg white conalbumin and chicken serum transferrin were examined and found to be identical. Conalbumin, when synthesized in a rabbit reticulocyte cell-free translation system, was found to contain an NH2-terminal extension of 19 amino acid residues.
Kimihiko Mizutani et al.
Biochimica et biophysica acta, 1820(3), 203-211 (2011-08-23)
Transferrins are a group of iron-binding proteins including serum transferrin, lactoferrin and ovotransferrin. The structures of transferrins are discussed. The typical transferrin molecules are folded into two homologous lobes. X-ray crystallography revealed that each lobe is further divided into two
Lisa A Lambert
Biochimica et biophysica acta, 1820(3), 244-255 (2011-06-23)
In vertebrates, serum transferrins are essential iron transporters that have bind and release Fe(III) in response to receptor binding and changes in pH. Some family members such as lactoferrin and melanotransferrin can also bind iron while others have lost this
View All Related Papers

Chromatograms

application for HPLC

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