Protein Modification Reagents
Abcam Recombinant S. cerevisiae KEX2 protease protein (Active), 50UG
Recombinant S. cerevisiae KEX2 protease protein (Active) is a Saccharomyces cerevisiae S288C Fragment protein, in the 110 to 667 aa range, expressed in BTI-TN-5B1-4, with >95% purity, < 1 EU/µg endotoxin level and suitable for SDS-PAGE, HPLC, FuncS.
Protein/ Peptide/ Enzyme Synonyms: QDS1, YNL238W, N1122, KEX2, Kexin, Protease KEX2, Proteinase YSCF
Conjugation: Unconjugated
The product is subject to the following: Abcam Restricted Use Statement
Nanocs Ruthenium PEG Maleimide, 5 mg
Nanocs provides Ruthenium PEG derivatives for biomedical research use, 5000 Da.
Medchemexpress LLC Biotin-PEG3-azide | 875770-34-6 | MFCD20134145 | ≥97.0% | 444.55 g/mol | C18H32N6O5S | 5 MG
Biotin-PEG3-azide is a PEGylated biotinylation reagent bearing a terminal azide group for copper-catalyzed click chemistry. It is employed as a linker in PROTAC synthesis and for affinity labeling and bioconjugation workflows requiring streptavidin capture.
- Provides a three-unit PEG spacer for increased solubility and reduced steric hindrance.
- Includes a terminal azide group compatible with click conjugation to alkynes.
- Delivers a biotin affinity tag for efficient capture by streptavidin.
- High purity suitable for research applications.
- Soluble in DMSO and water with sonication as needed.
- Stable as a powder when stored at low temperatures.
Medchemexpress LLC Dibenzocyclooctyne-s-s-peg3-biotin | 1430408-09-5 | MFCD28334542 | 96.9% | C42H56N6O8S3 | 10MG
DBCO-S-S-PEG3-biotin is a cleavable, PEG-based linker bearing a DBCO moiety for strain-promoted alkyne-azide cycloaddition. It enables copper-free click conjugation of biotin to azide-containing biomolecules and functions as a disulfide-cleavable linker for applications such as affinity enrichment and PROTAC synthesis. The material is supplied as a solid and is stored under inert atmosphere for stability.
- Cleavable disulfide linker for controlled release
- Compatible with copper-free click chemistry (SPAAC)
- High purity: 96.9%
- Soluble in DMSO at 100 mg/mL (requires ultrasonic)
- Suitable for bioconjugation, affinity enrichment, and linker synthesis
Medchemexpress LLC Endo-BCN-PEG3-maleimide | 2141976-33-0 | MFCD31811466 | 98.5% | C26H37N3O8 | 10MG
endo-BCN-PEG3-mal is a heterobifunctional PEG-based linker containing a strained bicyclononyne (BCN) moiety and a terminal maleimide. It is designed for bioconjugation workflows, enabling copper-free click chemistry with azides and selective thiol coupling, and is commonly used in linker assembly for targeted degrader and conjugate synthesis.
- Enables strain-promoted alkyne-azide cycloaddition (SPAAC) with azide partners.
- Provides a thiol-reactive maleimide for selective conjugation.
- Uses a PEG3 spacer to improve solubility and flexibility.
- Suitable for linker synthesis and bioconjugation applications.
- Supplied as an oil with high reported purity.
Medchemexpress LLC Endo-BCN-PEG4-PFP ester | 2904607-26-5 | 95.0% | C28H34F5NO8 | 10MG
endo-BCN-PEG4-PFP ester is a PEG-based bifunctional linker combining a strained alkyne (BCN) for strain-promoted alkyne-azide cycloaddition with a pentafluorophenyl (PFP) activated ester for efficient conjugation to primary amines. Supplied as an oil, it is designed for use in click chemistry, bioconjugation, and linker assembly in targeted degrader synthesis.
- Enables strain-promoted alkyne-azide cycloaddition (SPAAC) without copper.
- PFP ester reacts efficiently with primary amines to form stable amide bonds.
- PEG4 spacer improves solubility and reduces steric hindrance.
- Suitable for bioconjugation and targeted degrader linker construction workflows.
- Stable when stored frozen; follow recommended storage conditions for longevity.
Medchemexpress LLC Mal-PEG2-oxyamine TFA | 00-00-0 | MFCD00209801 | 96.5% | C12H17F3N2O7 | 10MG
Mal-PEG2-oxyamine TFA is a PEG-based bifunctional linker supplied as the trifluoroacetic acid (TFA) salt for use in PROTAC synthesis and other bioconjugation applications. It combines a maleimide reactive group with an oxyamine functional handle, and a short PEG2 spacer to enhance solubility and flexibility.
- Bifunctional linker enabling thiol and carbonyl conjugation.
- Maleimide permits rapid, thiol-selective coupling under mild conditions.
- Oxyamine enables chemoselective oxime ligation to aldehydes and ketones.
- PEG2 spacer increases aqueous solubility and reduces steric hindrance.
- Provided as TFA salt to improve stability and handling.
- High purity suitable for research and synthetic workflows.
Abcam Kinase Assay Buffer I, 5ML
Stock solution of buffer used for assaying kinase protein.
The product is subject to the following: Abcam Restricted Use Statement
Broadpharm Fmoc-NH-PEG11-CH2COOH| 2G| MOLWT: 781.9| CAS# 675606-79-8
Fmoc-NH-PEG11-CH2COOH| 2G| MOLWT: 781.9| CAS# 675606-79-8