Pseudomonas putida Strain Engineering

Multi-Gene Knockout Strain Construction Service

Custom CRISPR/Cas9-based knockout of multiple genes in Pseudomonas putida with verified mutant deliverables.

CRISPR/Cas9-mediated multi-gene knockout tailored to your targets
Custom design for up to 5 genes per project (scope-dependent)
Verified mutant strains with PCR and sequencing confirmation

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Service Overview

Targeted deletion of multiple genes in GRAS-class Pseudomonas putida for metabolic engineering and pathway analysis.

Gram-negative host with robust tolerance
Custom guide RNA design for each target
PCR and Sanger sequencing validation

Knockout

Large-Fragment Deletion

Markerless Editing

Approach

CRISPR/Cas9 Genome Engineering for Pseudomonas putida

We offer a streamlined pipeline for multi-gene knockout using optimized CRISPR vectors and screening protocols.

Multi-Gene Targeting

Simultaneous or sequential knockout of multiple genes with minimal off-target effects and flexible marker selection.

Custom sgRNA design for each target
Selection marker recycling options
Project-dependent multiplexing capacity

Verified Mutant Delivery

Every final strain is confirmed by PCR, Sanger sequencing, and phenotypic assessment when applicable.

Sanger sequencing of edited locus
Off-target amplicon sequencing (scope-dependent)
Research-scale glycerol stock provided

Gram-Negative Expertise

Deep experience with Pseudomonas putida genetics and transformation, ensuring high editing efficiency.

Metabolic Engineering Focus

Targeted gene knockouts for pathway optimization, metabolite production, and stress tolerance improvement.

Scalable from Lab to Industry

Projects range from single-gene knockouts to multi-locus deletions for strain development programs.

Deliverables

What You Receive

Every project concludes with validated strains and comprehensive documentation.

Strain Deliverables

Purified positive mutant strain (isolated colony)
Glycerol stock (2 vials)
Sequence-verified knockout report per target
Detailed project report with methods and QC results

Supporting Data

SgRNA design summary with target coordinates
PCR verification gel images
Sanger sequencing chromatograms for each edited locus
QC documentation including parental control data

Scope of Service

Customizable Project Parameters

Each project is scoped case-by-case after consultation to match your experimental goals.

Parameter	Typical project scope
Host Strain	Customer-provided strain or lab stock (e.g., KT2440, DOT-T1E); subject to compatibility check
Number of Knockout Targets	Typically 2–5 genes per project; higher multiplexing evaluated on request
Editing Modality	Full gene knockout, large-fragment deletion, or site-directed disruption via CRISPR/Cas9
Selection Strategy	Antibiotic resistance marker or markerless (counter-selection) as agreed in project plan
Validation	PCR + Sanger sequencing of each edited locus; optional off-target amplicon sequencing
Replicates	At least 2 independent clones confirmed per target to support genotypic consistency

Workflow

How It Works

A five-step process from design to delivery of verified multi-gene knockout strains.

Project Scoping & Design

We discuss your target genes, host strain, and desired editing strategy. Our bioinformatics team designs sgRNAs and selects the optimal CRISPR vector for your application.

CRISPR Vector Construction

Each sgRNA cassette is synthesized and cloned into a Cas9-bearing plasmid optimized for Pseudomonas putida. Multiple vectors are prepared.

Transformation & Selection

The CRISPR construct is introduced into P. putida via electroporation or conjugation. Transformants are selected on appropriate antibiotics and verified by colony PCR.

Screening & Genotyping

Individual colonies are screened for the desired deletion(s) using target-specific PCR. Positive clones are subjected to Sanger sequencing to confirm clean knockout junctions.

Mutant assessment & Delivery

Confirmed mutants are streaked for purity, glycerol stocked, and subjected to final QC (plasmid loss confirmation if applicable). A comprehensive data package and the strain(s) are shipped.

Applications

Research Applications

Multi-gene knockout strains enable diverse studies in Pseudomonas putida.

Pathway Optimization

Eliminate competing pathways or introduce catabolic bottlenecks to redirect carbon flux toward target products.

Disrupt native metabolite sinks
Block degradation of desired compounds
Enable production of non-native chemicals

Degradation Pathway Enhancement

Knockout regulatory or redundant genes to boost the strain's ability to degrade aromatic pollutants.

Remove negative regulators
Delete competing substrate pathways
Evaluate expression of key catabolic enzymes

Chassis Engineering

Simplify the genome by deleting non-essential genes to create a predictable, low-burden host for synthetic circuits.

Genome reduction for stable heterologous expression
Eliminate mobile genetic elements
Evaluate transformation and growth characteristics

FAQ

Frequently Asked Questions

Common questions about our multi-gene knockout service for Pseudomonas putida.

We routinely handle KT2440, DOT-T1E, and other common laboratory strains. Customer-provided isolates can also be used if they are compatible with our transformation protocols. We recommend a pre-project feasibility assessment for non-standard strains.
Our standard multiplexing capacity is up to five genes per round. For larger edits, we can design sequential knockout campaigns or use advanced methods like recombineering. The feasibility and timeline are evaluated during the project scoping phase.
Every knockout is verified by PCR targeting the edited region plus flanking sequences, followed by Sanger sequencing to confirm the precise deletion. We also check for plasmid loss and perform a growth comparison to the parental strain if requested.
Yes, we can perform markerless editing using counter-selection methods (e.g., sacB or I-SceI systems). This is a project-specific option that may require additional validation steps. We will discuss the best selection strategy based on your downstream needs.

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