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Image Unavailable-PRSI92-059

Human recombinant alpha-A-Crystallin (from E. coli)

Catalog Number: (PRSI92-059)
Supplier: ProSci Inc.
Description: Alpha-Crystallin A Chain (CRYAA) belongs to the small heat shock protein (HSP20) family and can be induced by heat shock. The expression of CRYAA is preferentially restricted to the lens cell. CRYAA may contribute to the transparency and refractive index of the lens. CRYAA has chaperone-like activity, preventing aggregation of various proteins under a wide range of stress conditions. Two additional functions of CRYAA are an autokinase activity and participation in the intracellular architecture.
UOM: 1 * 50 µG
Product Image-ATAG1228

Abbe refractometers

Supplier: Atago
Description: These Abbe refractometers are designed to meet the requirements in routine applications.

Image Unavailable-PRSI91-101

Human recombinant CRYAB (from E. coli)

Catalog Number: (PRSI91-101)
Supplier: ProSci Inc.
Description: alpha Crystallin B Chain (CRYAB) is a cytoplasmic protein that belongs to the small heat shock protein (HSP20) family. Alpha crystallins are composed of two gene products: alpha-A and alpha-B, for acidic and basic, respectively. Alpha crystallins can be induced by heat shock and are members of the small heat shock protein (sHSP also known as the HSP20) family. Alpha crystallins acts as molecular chaperones and hold them in in large soluble aggregates. CRYAB is expressed widely in many tissues and organs. It may contribute to the transparency and refractive index of the lens. The deficiency of CRYAB is the cause of myopathy myofibrillar type 2 (MFM2) and cataract posterior polar type 2 (CTPP2).
UOM: 1 * 50 µG
Product Image-554-4402

HPLC columns, Acclaim™ Surfactant

Supplier: Thermo Fisher Scientific
Description: These high-efficiency, silica-based columns provide excellent resolution and throughput for HPLC separations using  UV-Vis, evaporative light scattering (ELSD) or refractive index (RI) detection. The novel surface chemistry creates a unique polarity that offers significantly improved resolution for individual oligomers of ethoxylated surfactants compared with conventional C18 columns.

Product Image-ATAG3278

Accurate digital refactometers, RX-i

Supplier: Atago
Description: Accurate digital refractometers featuring intuitive colour touch screen technology makes the RX-i range easy to use and navigate around the operating modes.

Product Image-R79388

Anion exchange HPLC columns, RCX-10

Supplier: HAMILTON BONADUZ
Description: RCX-10 carbohydrate analysis columns are designed for the isocratic or gradient separation of carbohydrates. When an isocratic method is used with a conductivity, refractive index, ultraviolet, or pulsed amperometric detector (PAD), mono- and di-saccharides such as glucose, fructose, sucrose and lactose can be quickly determined.

Product Image-R79370

Anion exchange HPLC columns, RCX-30

Supplier: HAMILTON BONADUZ
Description: RCX-30 carbohydrate analysis columns are designed for the isocratic or gradient separation of carbohydrates. When an isocratic method is used with a conductivity, refractive index, ultraviolet, or pulsed amperometric detector (PAD), mono and disaccharides such as glucose, fructose, sucrose and lactose can be quickly determined.

Product Image-ATAG3921

Digital refractometer, RX-007α

Catalog Number: (ATAG3921)
Supplier: Atago
Description: The RX-007α is designed for water soluble samples with very low concentrations (5000 % or less) such as tea and low sugar beverages at a very high accuracy (±0,005 %).
UOM: 1 * 1 items
Product Image-ATAG1230

Abbe refractometers, NAR

Supplier: Atago
Description: The NAR Abbe refractometers can meet many of the requirements for routine measurements.

Product Image-630-0279

Immersion oils

Supplier: ZEISS
Description: Increases the resolving power of a microscope. Zeiss Immersol™ is a transparent oil with a refractive index of 1.518. It is free of fluorescence and halogen, and is certified according to ISO 8036-1/2.

MSDS

Product Image-88391.005

VWR®, Standards for the determination of Hydrocarbon Oil Index (HOI)

Supplier: VWR Chemicals
Description: VWR® offers a complete range of products for the determination of the hydrocarbon oil index (HOI) in accordance with EN ISO 9377-2 (DIN H53).

Product Image-PRSI31-293

Anti-CRYGC Rabbit Polyclonal Antibody

Catalog Number: (PRSI31-293)
Supplier: ProSci Inc.
Description: Crystallins are the dominant structural components of the vertebrate eye lens.Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Gamma-crystallins are a homogeneous group of highly symmetrical, monomeric proteins typically lacking connecting peptides and terminal extensions. They are differentially regulated after early development. Four gamma-crystallin genes (gamma-A through gamma-D) and three pseudogenes (gamma-E, gamma-F, gamma-G) are tandemly organized in a genomic segment as a gene cluster. Whether due to aging or mutations in specific genes, gamma-crystallins have been involved in cataract formation.
UOM: 1 * 50 µG
Product Image-PRSI55-379

Anti-CRYGS Rabbit Polyclonal Antibody

Catalog Number: (PRSI55-379)
Supplier: ProSci Inc.
Description: Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Gamma-crystallins are a homogeneous group of highly symmetrical, monomeric proteins typically lacking connecting peptides and terminal extensions. They are differentially regulated after early development. This gene encodes a protein initially considered to be a beta-crystallin but the encoded protein is monomeric and has greater sequence similarity to other gamma-crystallins. This gene encodes the most significant gamma-crystallin in adult eye lens tissue. Whether due to aging or mutations in specific genes, gamma-crystallins have been involved in cataract formation.
UOM: 1 * 400 µl

New Product


Product Image-ICNA0219605590

Dimethyl sulphoxide ≥99% Cell Culture Reagent

Supplier: MP Biomedicals
Description: Dimethyl Sulfoxide is ideal for use as a cryoprotectant. Also used in chemical reactions, in polymerase chain reactions (PCR) as a PCR cosolvent to help improve yields, especially in long PCR, and as a cryoprotectant vitrification agent for the preservation of cells, tissues and organs. DMSO is used in cell freezing media to protect cells from ice crystal-induced mechanical injury. It is used for frozen storage of primary, sub-cultured, and recombinant heteroploid and hybridoma cell lines, embryonic stem cells (ESC), and hematopoietic stem cells. DMSO is frequently used in the combinations with BSA or fetal bovine serum (FBS). Used to enhance dermal absorption of many chemicals. A solvent for many organic and inorganic compounds including fats, carbohydrates, dyes, resins, and polymers. Used in antifreeze or hydraulic fluids. A cryopreservative for cell cultures. Used in the oxidation of thiols and disulfides to sulfonic acids.

Dimethyl sulfoxide (DMSO) is a highly polar aprotic organic reagent that has exceptional solvent properties for organic and inorganic chemicals.

Physical Apppearance: Liquid
Viscosity: 1.1 centipoises (27 °C)
Vapor Density: 2.7 (vs air)
Vapor Pressure: 0.55 hPa at 20 °C, 0.42 mmHg (20 °C)
Refractive Index: n20/D 1.479(lit.)
Solubility: Soluble in water (1 mL DMSO + 1 mL H2O), methanol, acetone, ether, benzene, chloroform

MSDS

Product Image-PRSI56-382

Anti-CRYBA1 Rabbit Polyclonal Antibody

Catalog Number: (PRSI56-382)
Supplier: ProSci Inc.
Description: Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Beta-crystallins, the most heterogeneous, differ by the presence of the C-terminal extension (present in the basic group, none in the acidic group). Beta-crystallins form aggregates of different sizes and are able to self-associate to form dimers or to form heterodimers with other beta-crystallins. This gene, a beta acidic group member, encodes two proteins (crystallin, beta A3 and crystallin, beta A1) from a single mRNA, the latter protein is 17 aa shorter than crystallin, beta A3 and is generated by use of an alternate translation initiation site. Deletion of exons 3 and 4 causes the autosomal dominant disease 'zonular cataract with sutural opacities'.
UOM: 1 * 400 µl

New Product


Product Image-PRSI32-140

Anti-CRYAB Mouse Monoclonal Antibody

Catalog Number: (PRSI32-140)
Supplier: ProSci Inc.
Description: Crystallin, alpha B.Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Alpha crystallins are composed of two gene products: alpha-A and alpha-B, for acidic and basic, respectively. Alpha crystallins can be induced by heat shock and are members of the small heat shock protein (sHSP also known as the HSP20) family. They act as molecular chaperones although they do not renature proteins and release them in the fashion of a true chaperone; instead they hold them in large soluble aggregates. Post-translational modifications decrease the ability to chaperone. These heterogeneous aggregates consist of 30-40 subunits; the alpha-A and alpha-B subunits have a 3:1 ratio, respectively. Two additional functions of alpha crystallins are an autokinase activity and participation in the intracellular architecture. Alpha-A and alpha-B gene products are differentially expressed; alpha-A is preferentially restricted to the lens and alpha-B is expressed widely in many tissues and organs. Elevated expression of alpha-B crystallin occurs in many neurological diseases; a missense mutation cosegregated in a family with a desmin-related myopathy.
UOM: 1 * 100 µl
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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
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The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 8822222.
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