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Key Documents

ABN185

Sigma-Aldrich

Anti-alpha B-crystallin Antibody

from rabbit, purified by affinity chromatography

Synonym(s):

Alpha-crystallin B chain, Alpha(B)-crystallin, Heat shock protein beta-5, Renal carcinoma antigen NY-REN-27, Rosenthal fiber component

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

rabbit

Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

purified by

affinity chromatography

species reactivity

bovine, human, rat

species reactivity (predicted by homology)

horse (based on 100% sequence homology), rhesus macaque (based on 100% sequence homology), ox (based on 100% sequence homology), mouse (based on 100% sequence homology)

technique(s)

immunohistochemistry: suitable (paraffin)
western blot: suitable

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

bovine ... Cryab(281719)
human ... CRYAB(1410)
mouse ... Cryab(12955)
rat ... Cryab(25420)

General description

Alpha B-crystallin is a major structural protein in the vertebrate eye lens, but is also found in cardiac and skeletal muscles, kidney, and brain. Alpha B-crystallin is also found to be a component of Rosenthal fibers and a consistent tissue marker of epileptic foci. It occurs as large aggregates of up to 106 Da, composed of two proteins, αA- and αB-crystallin. The αA gene encodes a polypeptide of 173 residues, while αB-crystallin gene encodes a 175 residue polypeptide. αB-crystallin, like the small heat shock proteins (sHsp′s), is induced by heat or osmotic shock and is upregulated by stress. α-crystallin and the sHsp′s protect other proteins from heat-induced aggregation. The two other crystallin families, β and ɣ, are homologous to each other but not to the α-family or the sHsp′s.

Specificity

This antibody recognizes the N-terminus of alpha B-crystallin.

Immunogen

Epitope: N-terminus
KLH-conjugated linear peptide corresponding to the N-terminus human alpha B-crystallin.

Application

Immunohistochemistry Analysis: A 1:1,000 dilution from a representative lot detected Alpha-crystallin B chain in rat lens fiber tissue. A 1:2,000 dilution from a representative lot detected Alpha-crystallin B chain in strong rat lens fiber tissue (data not provided). A 1:1,000 dilution from a representative lot detected Alpha-crystallin B chain in strong muscle fiber tissue (data also not provided). It is recommended to use a 1:2,000 dilution only for strong rat lens fiber tissue.
Western Blot analysis: 0.05 µg/mL of this antibody detected Alpha-crystallin B chain in 10 µg of human kidney and calf kidney tissue lysate.
Research Category
Neuroscience
Research Sub Category
Developmental Neuroscience
This Anti-alpha B-crystallin Antibody is validated for use in WB, IH(P) for the detection of alpha B-crystallin.

Quality

Evaluted by Western Blot in bovine calf lens tissue lysate.

Western Blot analysis: 0.05 µg/mL of this antibody detected Alpha-crystallin B chain in 10 µg of bovine calf lens tissue lysate.

Target description

~20 kDa observed. Uncharacterized bands at ~37 and 43 kDa may be observed in some cell lyates.

Physical form

Affinity purified
Purified rabbit polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Analysis Note

Control
Bovine calf lens, human kidney and calf kidney tissue lysate

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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Sandip K Nandi et al.
Glycoconjugate journal, 38(3), 347-359 (2020-11-28)
Proteins in the eye lens have negligible turnover and therefore progressively accumulate chemical modifications during aging. Carbonyls and oxidative stresses, which are intricately linked to one another, predominantly drive such modifications. Oxidative stress leads to the loss of glutathione (GSH)
Fermin Moreno et al.
PloS one, 12(6), e0178093-e0178093 (2017-06-09)
The co-occurrence of the c.709-1G>A GRN mutation and the p.A152T MAPT variant has been identified in 18 Basque families affected by frontotemporal dementia (FTD). We aimed to investigate the influence of the p.A152T MAPT variant on the clinical and neuropathological
AAV2-Mediated Expression of HspB1 in RGCs Prevents Somal Damage and Axonal Transport Deficits in a Mouse Model of Ocular Hypertension.
Nam, et al.
Translational vision science & technology, 11, 8-8 (2022)
Sandip K Nandi et al.
Experimental eye research, 182, 1-9 (2019-03-09)
Acetylation of lysine residues occurs in lens proteins. Previous studies have shown an improvement in the chaperone activity of αA-crystallin upon acetylation. Sirtuins are NAD+-dependent enzymes that can deacylate proteins. The roles of sirtuins in regulating the acetylation of lens
Sandip K Nandi et al.
The Journal of biological chemistry, 295(17), 5701-5716 (2020-03-19)
Lens proteins become increasingly cross-linked through nondisulfide linkages during aging and cataract formation. One mechanism that has been implicated in this cross-linking is glycation through formation of advanced glycation end products (AGEs). Here, we found an age-associated increase in stiffness

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