Product synthetic-chemistry-protein-crosslinkers

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Catalog	name	Description	price
R-L-157	Recombinant Bovine,rbEK-His	Enterokinase (EC 3.4.21.9) is a serine proteolytic enzyme, which can recognize the sequence of ASP ASP Lys (DDDDK) in protein efficiently and specifically, hydrolyzed peptide binding at the c-terminal of lysine (Lys, K), producing cleavage, hydrolyzes trypsinogen into trypsin in the body. Because enterokinase has high specificity and efficient enzymatic cleavage, it is widely used in genetic engineering. Product development. Natural enterokinase consists of a heavy chain of 115kda and a light chain of 35kDa. The heavy chain anchors the cell membrane, and the light chain has full enzymatic catalytic activity. The central region of light chain activity (235A. A., 26.2kda) secreted and expressed by E. coli is more active than that of bovine enterokinase, which is particularly suitable for the enzymatic digestion of the fusion protein of genetic engineering. Activity definition: 25 ℃, reaction buffer 50 mM Tris-HCl (pH 8.0), substrate 50 μ G 1 mg/ml of fusion protein containing restriction site, the amount of enzyme required to cut 95% of fusion protein within 16 hours is 1 enzyme activity unit (1 U).	price>
R-L-158	Recombinant Core Streptavidin,r-cSA	Compared to native streptavidin, rc-SA is improved in stability and solubility by removing the sequence unrelated to activity. In addition, a cysteine residue is inserted at the C-terminus of rc-SA for covalent conjugation to the resin.	price>
R-L-159	Recombinant Core Streptavidin 2,r-csa2	Compared to native streptavidin, r-cSA2 is improved in stability and solubility by removal of the activity-unrelated sequence. Compared to r-csa, the amino acid sequence of this product does not contain cysteine, so it does not need reduction therapy.	price>
R-L-160	Recombinant Streptavidin 2,r-SA2	Recombinant streptavidin 2 (r-SA2) is modified from native streptavidin at the molecular level by removing the binding force to form tetramers. r-SA2 is an active monomer, but its affinity for biotin is strongly weakened (Kd≈10-7M), achieving reversible binding and dissociation. Thus, it can be used for the gentle separation and purification of proteins, antibodies, nucleic acids and other biotinylated materials.	price>
R-L-161	Recombinant Core Streptavidin 3,r-cSA3	Recombinant central streptavidin 3 (r-cSA3) is modified from native streptavidin at the molecular level by removing the binding force to form tetramers. r-cSA3 is an active monomer, but its affinity for biotin is strongly weakened (Kd≈10-7M), achieving reversible binding and dissociation. It can be used for gentle separation and purification of proteins, antibodies, nucleic acids and other biotinylated materials.	price>
R-L-162	Recombinant Core Streptavidin 4,r-cSA4	In theory, an SA can bind four biotinylated macromolecules, but due to the spatial barrier in biotinylated macromolecules, SA generally cannot bind 1-2 biotinylated macromolecules. We have optimized the spatial structure of streptavidin 4 at the molecular level, which leads to advantages in binding with biotinylated macromolecules. Our designed product can bind 2-4 biotinylated macromolecules, and its stability is also higher than common SA or SA core. It is suitable for scientific research, diagnostic testing and other fields.	price>
R-L-167	Biotin-DBCO,Biotin-Dibenzocyclooctyne	This biotin derivative bears a terminal DBCO group. It can be used to prepare various biotinylated conjugates via Click Chemistry. Biotin can be subsequently detected e.g. via streptavidin or avidin. DBCO alkynes allow to perform click reactions with azide-modified targets without the use of heavy metal catalysis via a strain-promoted azide-alkyne click reaction (SPAAC).	price>
R-R-0193	BSA-glucocorticoid	BSA-glucocorticoid/Bovine serum albumin-glucocorticoid refers to a conjugate of glucocorticoid hormone (such as cortisol or dexamethasone) covalently linked to bovine serum albumin (BSA).BSA-glucocorticoid conjugates can provide important insights into the pharmacokinetics and pharmacodynamics of glucocorticoids, allowing researchers to better understand their interactions with cells and tissues. Additionally, these conjugates can be utilized in the development of new drug delivery systems and targeted therapies.	price>
R-R-0214	BSA-hydrazide	BSA-hydrazide refers to a conjugate formed by attaching hydrazide molecules to Bovine Serum Albumin (BSA).BSA-hydrazide offers a versatile and customizable tool for various biomedical, biotechnological, and bioanalytical applications. Its ability to react with aldehydes or carbonyl compounds allows for the specific conjugation or surface immobilization of BSA, enabling researchers to create tailored biomaterials and develop novel assays or drug delivery systems.	price>
R-R-0232	Pentynoic acid STP ester CAS: 1807530-14-8	Pentynoic acid STP ester CAS: 1807530-14-8. This water soluble alkyne activated ester reagent is used for the attachment of alkyne group to variois biomolecules such as proteins, and peptides. Amino-DNA, and other amines can be used as well. Since natural proteins do not contain alkynes, but almost always contain amines (lysines), this molecule is an "adaptor" to turn natural amines into alkynes.	price>

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