Protein Modification Reagents
Sigma Aldrich Fine Chemicals Biosciences Pepsin from porcine gastri500G
Pepsin from porcine gastri500G
Medchemexpress LLC DSPE-PEG-maleimide | 00-00-0 | 99.5% | 10MG
DSPE-PEG-maleimide (MW 5000) is a pegylated phospholipid that combines a DSPE lipid anchor with a PEG spacer terminated in a maleimide group for selective thiol conjugation. Supplied as a solid powder with high purity, it is designed for incorporation into liposomes and lipid nanoparticles and for attaching thiol-containing ligands and peptides to particle surfaces.
- Molecular weight ~5,000 for predictable spacer length.
- Maleimide functional group enables selective thiol conjugation.
- DSPE lipid anchor allows stable insertion into lipid bilayers.
- PEG spacer increases circulation time and stability of formulations.
- High purity (~99.5%) suitable for research and formulation work.
- Powder form with recommended storage at -20°C for long-term stability.
STEMCELL Technologies Collagenase Type V, Size: 100 mg
Collagenase is a protease consisting of a single polypeptide chain approximately 1,000 amino acid residues in length. Collagenase is capable of digesting native collagen fibrils commonly found in connective tissues and therefore is frequently used for tissue dissociation. Collagenase preparations contain the activity of several proteases, including collagenase, caseinase, clostripain, and trypsin (Kessler & Yaron). Collagenase Type V contains high levels of collagenase and caseinase activities.
Medchemexpress LLC DBCO-PEG12-maleimide | 00-00-0 | 98.0% | C52H74N4O17 | 10MG
DBCO-PEG12-maleimide is a PEG12-based bifunctional linker for bioconjugation and PROTAC synthesis. It combines a dibenzocyclooctyne (DBCO) moiety for strain-promoted alkyne-azide cycloaddition and a maleimide group for selective thiol conjugation, providing a flexible, hydrophilic spacer for assembling complex conjugates. Supplied as a high-purity reagent for research use.
- Enables copper-free click chemistry via strain-promoted alkyne-azide cycloaddition.
- Provides thiol-selective conjugation through a maleimide reactive handle.
- Offers a PEG12 spacer to increase solubility and reduce steric hindrance.
- High purity suitable for research applications.
- Stable when stored under recommended conditions.
Chemscene ChemScene | Biotin-PEG4-hydrazide | 100MG | CS-0114565 | 0.97 | 756525-97-0| MFCD09952658 | 505.63
ChemScene | Biotin-PEG4-hydrazide | 100MG | CS-0114565 | 0.97 | 756525-97-0| MFCD09952658 | 505.63
ABclonal Technology NRIP2 Rabbit pAb
Predicted to enable aspartic-type endopeptidase activity. Predicted to be involved in proteolysis. Predicted to act upstream of or within Notch signaling pathway and negative regulation of transcription by RNA polymerase II. Located in cytoplasm.
ABclonal Technology ANG Rabbit pAb
The protein encoded by this gene, known as RNase5 or angiogenin, is a member of the RNase A superfamily, though it has weak ribonucleolytic activity. It is a potent mediator of angiogenesis, binding to actin on endothelial cell surfaces to promote blood vessel formation. This protein also accumulates in the nucleolus to stimulate ribosomal transcription and, under stress, translocates to the cytosol to hydrolyze tRNAs, affecting protein synthesis. The mature protein, after cleavage of a signal peptide, contains a nuclear localization signal, a cell-binding motif, and a catalytic domain. It is neurotrophic, neuroprotective, and exhibits antimicrobial activity against bacteria and fungi, such as S. pneumoniae and C. albicans. This gene plays roles in cell growth and tumor progression, with mutations linked to amyotrophic lateral sclerosis (ALS). Alternative splicing produces multiple transcript variants encoding the same protein.
Sigma Aldrich Fine Chemicals Biosciences Collagenase B from Clostri
Collagenase B is prepared from Clostridium histolyticum cultures by filtration ammonium sulfate precipitation dialysis and lyophilization. Collagenase from Clostridium histolyticum is a collagenolytic enzyme. It interacts with collagen-like substances and is responsible for the degradation of collagen into small peptides. It is widely used for the disaggregation of many types of tissues (e.g. lung heart muscle bone adipose tissue liver kidney cartilage mammary gland placentae blood vessels brain tumors) and for the preparation of single-cell suspensions for the establishment of primary cell culture systems. Collagenase B is recommended when yield and viability are important.
STA PHARMACEUTICAL US LLC Fmoc-N-amido-PEG-9-COOH | 1 g | CAS 1191064-81-9 | MDL MFCD28385470
Fmoc-N-amido-PEG-9-COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 1 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 1191064-81-9
- MDL: MFCD28385470
- InChIKey: NEESTRVILHNOJT-UHFFFAOYSA-N
- Molecular Weight: 707.814
- Molecular Formula: C36H53NO13
- Purity: ≥95%
- Container Type: 15 mL HDPE
- Pack Size: 1 g
- Net Weight: 1 g
- Gross Weight: 7.8 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13,16,19,22,25,28,31-decaoxa-4-azatetratriacontan-34-oic acid
- SMILES: O=C(CCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)O
Sigma Aldrich Fine Chemicals Biosciences Pepsin Reagent Ready to Us
PEPSIN Pepsin Reagent Ready to Us
Medchemexpress LLC Biotin-PEG24-NHS ester | 00-00-0 | 98.0% | 1469.72 | C65H120N4O30S | 5 MG
Biotin-PEG24-NHS ester is a PEG-based linker containing an N-hydroxysuccinimide (NHS) ester for efficient amine coupling. It installs a biotin tag separated by a PEG24 spacer, facilitating bioconjugation, affinity capture, and PROTAC synthesis.
- Reactive NHS ester enables rapid coupling to primary amines.
- PEG24 spacer improves solubility and reduces steric hindrance.
- Biotin tag allows affinity purification and detection.
- High purity (98.0%) suitable for research applications.
- Solid form; molecular weight 1469.72; formula C65H120N4O30S.
- Available in small quantities (e.g., 5 mg) for small-scale synthesis.
- Store sealed, away from moisture and light; in solvent keep at -80°C for long-term storage.
Sigma Aldrich Fine Chemicals Biosciences Collagenase Type II Cls II1G
This product is identical to Biochrom GmbH part numbers C2-22 and C2-28. Enzyme blending from collagenase clostripain with tryptic and proteolytic activities from Clostridium histolyticum. This preparation shows a high clostripain activity with the tryptic activity close to type I. Suitable for liver bone thyroid heart and salivary gland tissue. Specific activity is 125 to 250 Mandl units per milligram of powdered substance.
ABclonal Technology ANG Rabbit pAb
The protein encoded by this gene, known as RNase5 or angiogenin, is a member of the RNase A superfamily, though it has weak ribonucleolytic activity. It is a potent mediator of angiogenesis, binding to actin on endothelial cell surfaces to promote blood vessel formation. This protein also accumulates in the nucleolus to stimulate ribosomal transcription and, under stress, translocates to the cytosol to hydrolyze tRNAs, affecting protein synthesis. The mature protein, after cleavage of a signal peptide, contains a nuclear localization signal, a cell-binding motif, and a catalytic domain. It is neurotrophic, neuroprotective, and exhibits antimicrobial activity against bacteria and fungi, such as S. pneumoniae and C. albicans. This gene plays roles in cell growth and tumor progression, with mutations linked to amyotrophic lateral sclerosis (ALS). Alternative splicing produces multiple transcript variants encoding the same protein.