AtaGenix Laboratories

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E. Coli

AtaGenix provides cost-effective, high-yield E. coli recombinant protein expression services — from gene synthesis to purified protein. Our systematic approach screens up to 32 expression conditions (strain, temperature, IPTG concentration, induction time) to identify the optimal parameters for your target protein.

Whether you need microgram quantities for initial characterization or gram-scale production for in vivo studies, our prokaryotic platform delivers with turnaround as fast as 2–3 weeks. PhD-level scientists manage every project with rigorous QC at each stage.

E. coli expression is ideal for non-glycosylated proteins, antigens, enzyme targets, and structural biology applications where speed and cost-efficiency are priorities. For targets requiring mammalian post-translational modifications, explore our Mammalian Expression Services.

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End-to-End E. coli Expression Workflow

Our standardized pipeline takes your gene sequence from design through to purified, QC-verified protein — with expert optimization at every step.

Service Scope

 Codon-optimized gene synthesis  Vector construction & sequence verification
 Multi-strain transformation (BL21, Rosetta, SHuffle, etc.)  Up to 32 expression condition screens
 Soluble & inclusion body pathways  Inclusion body refolding optimization
 Affinity & polishing chromatography (Ni-NTA, SEC, IEX)  Endotoxin removal (<1 EU/μg available)
 Scalable: mg to gram quantities  Full QC: SDS-PAGE, WB, Bradford, endotoxin

When to Choose E. coli Expression

Best For Why E. coli
Antigens & immunogens Fast, high-yield production for antibody generation campaigns
Enzymes & non-glycosylated proteins No glycosylation needed — E. coli delivers active protein at the lowest cost
Structural biology (X-ray, Cryo-EM) High purity (>95%) and homogeneity for crystallization and structural studies
Budget-sensitive projects Most economical expression system — ideal for early-stage screening and feasibility

2–3

Weeks Turnaround

32

Conditions Screened

>95%

Purity Available

mg–g

Production Scale

Need glycosylation or mammalian PTMs? Consider our HEK293 Transient, CHO Transient, or Insect Cell (Baculovirus) platforms.

E. coli Expression Workflow

A standardized 5-step pipeline with optimization checkpoints to ensure maximum yield and quality.

01

Gene Design

Codon optimization
Gene synthesis
Sequence verification

02

Vector & Cloning

Subcloning into expression vector
Tag selection (His, GST, MBP, SUMO)

03

Transformation & Screening

Multi-strain testing
32 condition optimization
Solubility assessment

04

Expression & Purification

Scale-up production
Affinity + polishing chromatography
Refolding if needed

05

QC & Delivery

SDS-PAGE, WB, Bradford
Endotoxin testing
Lyophilized or liquid format

Available Tag Options

Tag Size Advantage Best For
His (6x) ~1 kDa Minimal size impact, simple Ni-NTA purification General use, structural studies
GST ~26 kDa Enhances solubility, mild elution Solubility-challenged proteins
MBP ~42 kDa Strongest solubility enhancement Difficult-to-express targets
SUMO ~12 kDa Clean cleavage, native N-terminus Tag-free final protein

Timelines and yields depend on target protein properties. Our scientists will recommend the optimal tag, strain, and expression strategy during project consultation. Quote-based pricing.

 

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