Recombinant Human PGP9.5 Protein

Beta LifeScience SKU/CAT #: BLA-6914P

Recombinant Human PGP9.5 Protein

Beta LifeScience SKU/CAT #: BLA-6914P
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Product Overview

Host Species Human
Synonym Epididymis luminal protein 117 Epididymis secretory protein Li 53 HEL 117 HEL S 53 NDGOA Neuron cytoplasmic protein 9.5 OTTHUMP00000218137 OTTHUMP00000218139 OTTHUMP00000218140 OTTHUMP00000218141 Park 5 PARK5 PGP 9.5 PGP9.5 PGP95 Protein gene product 9.5 Ubiquitin C terminal esterase L1 Ubiquitin C terminal hydrolase Ubiquitin C terminal hydrolase L1 Ubiquitin carboxyl terminal esterase L1 Ubiquitin carboxyl terminal hydrolase isozyme L1 Ubiquitin carboxyl-terminal hydrolase isozyme L1 Ubiquitin thioesterase L1 Ubiquitin thiolesterase Ubiquitin thiolesterase L1 UCH-L1 UCHL1 UCHL1_HUMAN
Description Recombinant Human PGP9.5 Protein was expressed in E.coli. It is a Full length protein
Source E.coli
Purity >95% SDS-PAGE.
Endotoxin < 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity Specific activity: > 300 pmole/min/ug. Measured by the hydrolysis of Ubiquitin-AMC at pH 8.0, at 37°C.Activity Assay:Prepare a 100ul of recombinant PGP9.5 protein with various concentrations (0.48ng, 0.9ng) in assay buffer and equilibrate to 37°C for 10 minutes. (Assay buffer: 50mM Tris-HCl, 0.5 mM EDTA, 1 mM DTT, 0.1 mg/ml Ovalbumin, pH 8.0.)Add 50ul of 1uM Ubiquitin-AMC.Read at excitation wavelengths 355nm and emission 460nm for 5 minutes. - Ubiquitin-AMC- 96 Well Polystyrene Microplate, black- Fluorescent plate reader (PerkinElmer, VICTOR X3)
Formulation Liquid Solution
Stability The recombinant protein samples are stable for up to 12 months at -80°C
Reconstitution See related COA
Unit Definition For Research Use Only
Storage Buffer Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycle.


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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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