Recombinant Protein

Products of Sino Biological

Recombinant Protein Products Features

Various species

The Recombinant Proteins span various species which include, but are not limited to, human, mouse, rat, cynomolgus, canine, RSV, and Influenza Virus.

Human	Ferret
Mouse	E. coli
Rat	Influenza Virus
Rhesus	HIV (Human Immunodeficiency Virus)
Canine	HCMV (Human Cytomegalovirus)
Bovine	RSV (Human Respiratory Syncytial Virus)

Expression Host and Bioactivity

Over 90% recombinant proteins are human cell-expressed. Human cell expression ensures the proper folding, glycosylation, gamma-carboxylation and other post-translational modification of recombinant proteins.
The bioactivity assay results of several recombinant protein products are shown in table 1.

Table 1 Protein Bioactivity
Protein name	Sino Biological	US leading brand	Protein name	Sino Biological	US leading brand
	Bioactivity (ED₅₀ ng/ml)			Bioactivity (IC₅₀ )
GCSFR	1-4	1000-4000	SerpinA1	< 3.0 nM	< 5.0 nM
TrkA/NTRK1	40-150	800-4000	SerpinF2	< 0.5 nM	< 2.0 nM
aFGF	0.05-0.2	0.1-0.3	mouse SerpinF2	< 0.5 nM	< 1.0 nM
bFGF	0.02-0.1	0.1-0.6	TFPI	< 0.4 nM	< 0.75 nM
EGF	0.047	0.02-0.1	mouse TFPI	< 0.15 nM	< 1.0 nM
NGF	0.4-1	0.2-2	TFPI2	< 2.0 nM	< 5.0 nM

Purity

The majority of our recombinant proteins are purified to above 95% purity, suitable for most in vitro experiments.
Some recombinant proteins are purified to purity over 99%.
The SDS-PAGE images of recombinant proteins are provided.

Endotoxin Level

Human cell-expression ensures lower endotoxin level of most recombinant proteins.
Recombinant proteins were assessed for endotoxin using the Limulus Amoebocyte Lysates (LAL) assay, and the endotoxin levels are lower than 1.0 EU / μg.
The endotoxin level of TGF-beta 1 (CATALOG #: 10804-HNAH) is 0.15 EU / mg protein, and bFGF (CATALOG #: 10014-HNAE) is < 1.0 EU per mg protein as determined by the LAL method.

Formulation and Stability

All recombinant proteins are carrier-free. The addition of a carrier protein (such as BSA) to protein solutions may disturb your experiments.
Most recombinant proteins are lyophilized from a sterile filtered solution containing protective agent: trehalose and mannitol. Trehalose is effective for stabilizing protein when lyophilized and during storage in solid state, and also for maximizing recovery upon reconstitution. Mannitol effectively prevents aggregation of protein.

Affordable Price

Dramatic cost saving for quality recombinant proteins.

New Protein Update

Over 30 protein products are produced per week.
New product information is updated weekly.

Recombinant Protein Products Overview

Sino Biological provides a wide selection of quality Recombinant Proteins for research, which are directed towards:

Research Topics

Over 600 recombinant proteins for cancer research
Over 900 recombinant proteins for immunology research
Over 300 recombinant proteins for signal transduction research
Over 400 recombinant proteins for neuroscience research
Over 400 recombinant proteins for stem cell research
Over 600 recombinant proteins for cardiovascular research
Over 300 enzymatic proteins
Over 150 viral proteins

Other Research Focus

Adhesion molecules	Growth factors
Cytokines	Kinases
Chemokines	Proteases
Cancer biomarkers	Phosphatases
CD antigens	Transcription factors
Fc receptors

Proteins developed as biomarkers and disease therapeutic targets.

Influenza Viral Proteins:

Over 150 influenza viral proteins, including influenza hemagglutinin (HA), influenza neuraminidase (NA), and influenza nucleoprotein (NP), from 22 influenza subtypes and 66 influenza strains.

Influenza virus research tools
H1N1 (HA, NA, NP)
H5N1 (HA, NA)
H1N2, H1N3, H2N2, H3N2, H4N6, H5N2, H5N3, H5N8, H6N1, H7N7, H8N4, H9N2, H10N3, H11N2, H11N9, H12N5, H13N8, H15N8, H16N3, influenza B

Bulk Quantities

Big discount for bulk order.
Please contact us for a bulk order quote.

Contact us

Notes: Search products in the search box on the top of our website. When the recombinant protein is not found, you are encouraged to submit your request so that the proteins of interest be placed on the priority list. And you will be contacted when the protein is available.

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