Protein Modification Reagents
Gold Biotechnology Inc TCEP-HCl 10 g
TCEP (Tris (2-Carboxyethyl) phosphine Hydrochloride) is an odorless reducing agent suitable for protein applications and in the preparation for electrophoresis. TCEP is water soluble, is stable in a variety of solutions and is particularly useful in the labeling of cysteine residues with maleimides, preventing the cysteines from forming disulfide bonds.
Creative Pegworks 4-Arm PEG-OH MW 10k - 10g
4-Arm PEG-OH is a multi-armed polyethylene glycol with hydroxyl groups at each terminal of the four arms. Pentaerythritol core is used in 4-arm PEG raw materials and derivatives. The indicated molecular weight of multi-arm PEG is the sum of the molecular weights of all the arms. 4-Arm PEG-OH can be used to prepare functional PEG reagents or in sol-gel chemistry to make silica-related hydrogel.
Creative Pegworks 4-Arm PEG-MAL, MW 5k - 10g
4-Arm PEG-MAL is a multiarmed PEG derivative with maleimide at each terminal of the four arms connected to one pentaerythritol core. Maleimide selectively reacts with free thiol, SH, sulfhydryl, or mercapto group via Michael addition to form a stable thioether bond. PEG-MAL useful for site specific protein and peptide modification. Hydroquinone MEHQ at ~ 200 ppm may be present as inhibitors to prevent self polymerization and partial crosslinking. MEHQ may be removed per customer request.
Worthington Biochemical Corporation ELASTASE 5MG
Chromatographically purified. A lyophilized powder.
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 500mg
Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 500mg
Worthington Biochemical Corporation COLLANGENAS
Chromatographically purified. <50 caseinase units per milligram. Supplied as a lyophilized powder.
Worthington Biochemical Corporation TRYPSIN TPCK TREATED 1G
A chromatographically purified, diafiltered, lyophilized powder that has been treated with L-(tosylamido-2-phenyl) ethyl chloromethyl ketone (TPCK) to inhibit contaminating chymotryptic activity [Kostka and Carpenter, J. Biol. Chem. 239, 1799 (1964)].
Worthington Biochemical Corporation TRPYSIN TPCK TREATED
Chromatographically purified trypsin treated with L-(tosylamido-2-phenyl) ethyl chloromethyl ketone (TPCK) to inhibit contaminating chymotryptic activity according to Kostka, V., and Carpenter, F.H.: JBC, 239, 1799 (1964).