You searched for: Proteins and Peptides

Proteins are used in routine laboratory procedures such as binding enzymes or coupling peptides to carrier proteins. These kits, mixture solutions, and collagen matrices fulfill a myriad of essential laboratory functions for developing relationships between proteins and other cellular components. The stimulating proteins offered have various amino acid arrangements and functions to fulfill any sample manipulation for testing purposes in any field.

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Bovine serum albumin (BSA), Fraction V

Supplier: Merck

Bovine serum albumin (BSA), Fraction V

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Poly-L-lysine hydrobromide

Supplier: SIGMA ALDRICH MICROSCOPY

Poly-L-lysine is a positively charged amino acid polymer with approximately one HBr per lysine residue. The hydrobromide allows the poly-L-lysine to be in a crystalline form soluble in water. A small amount of product may be found in the beta structure because the HBr interferes with hydrogen bonding between amino and either the carboxyl groups or N or O containing moieties.

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VWR®, Glycylglycine (Gly-Gly)

Supplier: VWR Chemicals

Biological buffers are useful for cell culture in vitro, enzyme assays and some electrophoretic applications at physiological pH.

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VWR®, Bovine serum albumin (BSA)

Supplier: VWR Chemicals

A higher purity product than standard grade or Cohn fraction V material. It is negative for globulins that interfere in many assays.

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VWR®, Pepstatin A

Supplier: VWR Chemicals

An aspartic acid protease inhibitor of pepsin, renin, and cathepsin D. Also an inhibitor of the HIV protease. Not water soluble.

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VWR®, Streptavidin (from Streptomyces avidinii)

Supplier: VWR Chemicals

A 60 kDa tetrameric protein that exhibits high binding affinity for biotin. Able to bind one molecule of biotin with each subunit, streptavidin is useful in affinity chromatography, ELISA, immunohistochemistry, and Western Blotting.

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VWR®, Gelatin

Supplier: VWR Chemicals

VWR®, Gelatin

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VWR®, Gelatin

Supplier: VWR Chemicals

Fluorescence: 238 to 282
E. coli: equivalent
Water content: < or > 13%
pH at 25 °C: 4,0 - 5,7
Salmonella: not detectable
Standard plate count: ≤1000 /g
Viscosity: 38 to 50 mps

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Human/Mouse Recombinant TGF-B 3 (from E. coli)

Supplier: Shenandoah Biotechnology

Transforming growth factors (TGFs) are multifunctional peptides that regulate growth and differentiation in most cell types. The TGF-β family of proteins signal through serine/threonine kinase receptors. TGF-β isoforms (TGF-β1, -β2, and –β3) have overlapping, yet distinct biological actions in developing and adult tissues. TGF-β3 is an important factor in regulating cell adhesion and accelerating wound repair. TGF-β3 also functions during osteoblast proliferation, chemotaxis, and collagen synthesis.

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Human/Mouse Recombinant TGF-B 3 (from E. coli)

Supplier: Shenandoah Biotechnology

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VWR®, Chicken native albumin (from egg)

Supplier: VWR Chemicals

VWR®, Chicken native albumin (from egg)

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VWR®, Pepstatin A

Supplier: VWR Chemicals

An aspartic protease inhibitor of pepsin, renin, and cathepsin D. Can also block HIV protease. Not soluble in water.

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VWR®, Aprotinin

Supplier: VWR Chemicals

A competitive and reversible serine protease inhibitor of chymotrypsin, trypsin, kallikrein and plasmin. Not an inhibitor of Factor Xa and thrombin.

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Aprotinin (Trypsin inhibitor, pancreatic basic) (from bovine lung), proteomics grade

Supplier: VWR Chemicals

A competitive and reversible serine protease inhibitor of chymotrypsin, trypsin, kallikrein and plasmin. Not an inhibitor of Factor Xa and thrombin.

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VWR®, Bovine serum albumin (BSA)

Supplier: VWR Chemicals

A standard grade albumin for basic applications, produced by a heat shock process in caprylic acid.

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$VWR®, Bovine serum albumin (BSA), Cohn fraction V$

VWR®, Bovine serum albumin (BSA), Cohn fraction V

Supplier: VWR Chemicals

A Cohn fraction V albumin produced by cold ethanol fractionation with minimum use of chemicals. Fatty acids and native sialic acid residues are preserved in this BSA.