Recombinant antigen production
Use E. coli-derived proteins as antigens for antibody testing, immunoassay development or protein interaction studies.
Antibody Host Species
E. coli Expression Host Products
E. coli expression host products are widely used in recombinant protein research because Escherichia coli grows rapidly, is easy to scale and supports efficient production of many bacterial, viral and engineered proteins. Although E. coli is not an antibody host species in the same way as rabbit, mouse or goat, it is an important biological host for producing recombinant antigens, cytokines, enzymes, protein fragments and molecular biology reagents. Researchers use E. coli-derived products in immunology, assay development, antibody validation, vaccine research, protein characterization and functional studies.
Product catalog
Browse E Coli
Showing 25 unique product names from this subcategory.
Recombinant Human CD40L/TNFSF5 Protein (E.coli)
SKU: PKSH033725-01|Size: 20 µg
Recombinant E.coli Beta-Glucuronidase/Uida/Beta-Gus Protein (His Tag)
SKU: PKSQ050059-01|Size: 10 µg
Recombinant Human Pepsinogen C/PGC Protein (E.coli, His Tag)
SKU: PKSH030917|Size: 50 µg
Recombinant Human S100A8 Protein (E.coli, His Tag)
SKU: PKSH031246|Size: 100 µg
Recombinant Human GPD1/GDP-C Protein (E.coli, His Tag)
SKU: PKSH030541|Size: 100 µg
E.coli O157:H7 Rabbit Polyclonal Antibody (Biotin)
SKU: GTR17733819|Size: 100 µL
Recombinant Ovine GH Antagonist Protein, Untagged, E.coli-1mg
SKU: QP10640-1mg|Size: 1mg
Recombinant Human ERH/ DROER Protein, GST, E.coli-10ug
SKU: QP8423-ec-10ug|Size: 10ug
Recombinant Rat PDGF AA Protein, Untagged, E.coli-1mg
SKU: QP10803-1mg|Size: 1mg
Recombinant Mouse Renin-2 Protein, His, E.coli-10ug
SKU: QP8886-ec-10ug|Size: 10ug
Recombinant Human IL17/ IL17A Protein, Untagged, E.coli-25ug
SKU: QP10323-ec-25ug|Size: 25ug
Recombinant Human FGF14/ SCA27 Protein, GST, E.coli-1mg
SKU: QP6043-ec-1mg|Size: 1mg
Recombinant Human Interferon epsilon Protein, His, E.coli-200ug
SKU: QP7803-ec-200ug|Size: 200ug
Recombinant Human Sialidase-3 Protein, His, E.coli-100ug
SKU: QP8892-ec-100ug|Size: 100ug
Recombinant Human MAPK1, Active Protein, Untagged, E.coli-100ug
SKU: QP14023-EC-100ug|Size: 100ug
Recombinant other MT I Protein, Untagged, E.coli-500mg
SKU: QP12745-500mg|Size: 500mg
Recombinant Hepatitis C Virus polyprotein, His, E.coli-200ug
SKU: QP8939-ec-200ug|Size: 200ug
Recombinant Human NKX3-1 Protein, His, E.coli-5ug
SKU: QP12852-5ug|Size: 5ug
Recombinant Human CALCA/ CGRP Protein, GST, E.coli-1mg
SKU: QP8831-ec-1mg|Size: 1mg
Recombinant Mouse CCL22/ MDC Protein, Untagged, E.coli-20ug
SKU: QP10276-ec-20ug|Size: 20ug
Recombinant Human MAP2K3 Protein, His-SUMO, E.coli-1mg
SKU: QP6336-ec-1mg|Size: 1mg
Recombinant Human ERH/ DROER Protein, GST, E.coli-200ug
SKU: QP8423-ec-200ug|Size: 200ug
Recombinant HIV-1 gp41 Protein, Untagged, E.coli-1mg
SKU: QP12248-EC-1mg|Size: 1mg
Recombinant Human CCL4/ MIP1B Protein, Untagged, E.coli-250ug
SKU: QP10227-ec-250ug|Size: 250ug
Recombinant Human Ubiquitin K48R Protein, Untagged, E.coli-1mg
SKU: QP13871-1mg|Size: 1mg
Overview
E. coli as a practical host for recombinant protein production
E. coli is one of the most common expression systems for producing recombinant proteins because it offers fast growth, simple handling and scalable production.
Proteins expressed in E. coli are often used as antigens, standards, controls, assay components or research reagents in immunology and molecular biology workflows.
Because bacterial expression does not always support complex mammalian post-translational modifications, researchers should check whether the recombinant protein format is suitable for the intended assay.
Applications
Common E. coli expression host applications
Protein standards and controls
Support ELISA, western blot, calibration or validation workflows using recombinant protein material.
Cytokine and enzyme research
Study bacterial-expressed cytokines, enzymes or protein fragments in compatible research systems.
Molecular biology workflows
Use E. coli-derived proteins and reagents in cloning, expression, screening and functional validation workflows.
Selection guide
How to choose E. coli expression host products
Select E. coli-derived products according to protein identity, purity, tag format, folding state and assay compatibility.
1
Confirm protein identity
Check target name, gene symbol, accession number, sequence region and species origin.
2
Review expression host
Confirm that the product is expressed in E. coli and that bacterial expression is suitable for your workflow.
3
Check tag and format
Review whether the protein includes His-tag, GST-tag, tag-free format, fragment sequence or full-length construct.
4
Evaluate purity and documentation
Look for purity information, SDS-PAGE data, concentration, buffer composition and storage details.
5
Consider folding and activity
For functional assays, confirm whether the protein is folded, active or validated for the intended application.
6
Check endotoxin sensitivity
For cell-based or immune-sensitive workflows, review endotoxin information where relevant.
FAQ
E. coli Expression Host Products FAQ
Common questions about E. coli-derived recombinant protein products.
Why is E. coli used for recombinant protein production?
E. coli is used because it grows quickly, is easy to handle and can produce many recombinant proteins efficiently.
Is E. coli an antibody host species?
Not in the traditional antibody-production sense. E. coli is mainly used as an expression host for recombinant proteins, antigens and molecular biology reagents.
Can E. coli proteins be used in ELISA or western blot?
Yes, when the recombinant protein format and validation data match the intended assay.
What should I check before ordering an E. coli-derived protein?
Check sequence, species origin, tag, purity, buffer, endotoxin level, storage conditions and application validation.
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