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C4163

Sigma-Aldrich

α-Crystallin from bovine eye lens

lyophilized powder

Synonym(s):

alpha-Crystallin

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.61

biological source

bovine eye (lens)

assay

≥70% (biuret)

form

lyophilized powder

technique(s)

cell culture | mammalian: suitable

UniProt accession no.

storage temp.

−20°C

Gene Information

Application

α-Crystallin is a lens protein that contains two homologous subunits: αA- and αB-crystallins. α-Crystallin displays chaperone-like activity and plays an important role in maintaining lens transparency. It has been noted that in diabetic conditions of rats there is a decline in the chaperone activity of α-Crystallin. Research has shown that a dietary antioxidant, curcumin, can prevent this loss of chaperone activity.

Biochem/physiol Actions

α-Crystallin is a small heat-shock protein that has chaperone-like activity, preventing protein aggregation in vitro. Point mutations in α-crystallin genes are believed to be responsible for hereditary cataract development.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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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Laxman Mainali et al.
Current eye research, 46(2), 185-194 (2020-06-23)
Purpose/Aim: The amount of membrane-bound α-crystallin increases significantly with age and cataract formation, accompanied by a corresponding decline in the level of α-crystallin in the lens cytoplasm. The purpose of this research is to evaluate the binding affinity of α-crystallin
Binding of Alpha-Crystallin to Cortical and Nuclear Lens Lipid Membranes Derived from a Single Lens.
Timsina, et al.
International Journal of Molecular Sciences, 23 (2023)
Axel Leppert et al.
Protein science : a publication of the Protein Society, 31(8), e4378-e4378 (2022-07-29)
Molecular chaperones are essential to maintain proteostasis. While the functions of intracellular molecular chaperones that oversee protein synthesis, folding and aggregation, are established, those specialized to work in the extracellular environment are less understood. Extracellular proteins reside in a considerably
Delay of diabetic cataract in rats by the antiglycating potential of cumin through modulation of α-crystallin chaperone activity.
Kumar PA., et al.
The Journal of Nutrition, 20, 553-562 (2009)
Raju Timsina et al.
Experimental eye research, 206, 108544-108544 (2021-03-22)
The concentration of α-crystallin decreases in the eye lens cytoplasm, with a corresponding increase in membrane-bound α-crystallin during cataract formation. The eye lens's fiber cell plasma membrane consists of extremely high cholesterol (Chol) content, forming cholesterol bilayer domains (CBDs) within

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