Wet Lab Services

Professional Protein Characterization Services

Comprehensive structural and functional characterization of your proteins. From biophysical analysis to post-translational modification profiling, we provide the data you need for publication, patent applications, and therapeutic development.

Our Services

Protein Characterization

Biophysical Structural PTM Analysis
CD Spectroscopy
Mass Spectrometry
DSC Analysis
Overview

Why Protein Characterization Matters

Comprehensive characterization establishes identity, purity, structure, and function—critical for research credibility and regulatory approval.

Identity Verification

Confirm your protein's sequence, modifications, and mass. Critical for recombinant protein quality control and biosimilar development.

Structural Integrity

Assess secondary/tertiary structure, thermal stability, and oligomeric state. Essential for structural biology and formulation development.

Functional Activity

Quantify enzymatic activity, binding affinity, and biological function. Required for enzyme therapeutics and biomarker validation.

Key Services

Characterization Technologies

Comprehensive suite of analytical methods for complete protein characterization

Biophysical Analysis

Comprehensive characterization of protein physical properties including structure, stability, and aggregation behavior.

Methods
  • Circular dichroism (CD) spectroscopy
  • Differential scanning calorimetry (DSC)
  • Dynamic light scattering (DLS)
  • Static light scattering (SEC-MALS)
  • Fluorescence spectroscopy
  • UV-Vis absorbance spectroscopy

Mass Spectrometry

High-resolution mass spectrometry for molecular weight determination, sequence verification, and modification analysis.

Capabilities
  • Intact mass analysis (ESI-TOF)
  • Peptide mapping
  • PTM localization (phosphorylation, glycosylation)
  • Disulfide bond mapping
  • De novo sequencing

Purity & Aggregation

Quantitative assessment of protein purity and aggregation state using electrophoretic and chromatographic methods.

Techniques
  • SDS-PAGE (reducing/non-reducing)
  • SES-PAGE (CE-SDS)
  • SEC-HPLC for aggregation
  • Dynamic light scattering (DLS)
  • AUC (analytical ultracentrifugation)

Glycosylation Analysis

Comprehensive glycan characterization including glycan profiling, site occupancy, and glycan structure elucidation.

Thermal Stability

Determine melting temperatures (Tm), stability profiles, and formulation conditions using multiple thermal methods.

Binding Studies

Surface plasmon resonance (SPR), isothermal titration calorimetry (ITC), and ELISA services for interaction analysis.

Technology Platform

Analytical Infrastructure

State-of-the-art instrumentation for precise, reproducible characterization

Mass Spectrometers

Thermo Q Exactive HF-X for intact mass, peptide mapping, and PTM analysis. Bruker ultrafleXtreme MALDI-TOF/TOF for rapid fingerprinting.

CD Spectrometers

JASCO J-1500 for far-UV and near-UV CD analysis. Secondary structure quantification and thermal denaturation curves.

Calorimeters

Malvern Panalytical VP-CAP DSC for thermal stability. Affinity Instruments ITC200 for binding thermodynamics.

Light Scattering

Wyatt DAWN HELEOS-II for SEC-MALS. Malvern Zetasizer for DLS and zeta potential measurements.

Why Choose CD Biosynsis?

Expertise, quality, and comprehensive reporting for your characterization needs

Regulatory-Grade Reports

Our characterization reports follow ICH and FDA guidelines. Suitable for IND submissions, BLA filings, and patent applications. Full audit trail and method validation documentation available.

Integrated Analysis

Combine characterization with our expression and purification services for complete protein development. Single source for expression, purity, and structural/functional data.

Expert Interpretation

Our scientists provide more than raw data—they offer interpretation, troubleshooting, and recommendations. Identify issues early and optimize your protein development.

Flexible Pricing

From singlemethod analysis to comprehensive characterization packages. Customized to your project needs and budget. Volume discounts for multiple samples.

Our Process

Characterization Workflow

1

Consultation

We discuss your protein and application to recommend the optimal characterization strategy and methods.

2

Sample QC

Initial quality check to verify sample integrity and concentration before analytical testing begins.

3

Analysis

Comprehensive analytical testing using orthogonal methods to ensure complete characterization.

4

Report Delivery

Comprehensive report with data, interpretation, and expert recommendations for your next steps.

FAQ

Frequently Asked Questions

Recommendations depend on your protein type and application. For general recombinant proteins, we typically recommend intact mass, SDS-PAGE purity, SEC-MALS for aggregation, CD for secondary structure, and DSC for thermal stability. Contact us to discuss your specific requirements.

Requirements vary by method. Most analyses require 0.1-1 mg of purified protein. For large-scale PTM analysis or glycosylation studies, we may need 2-5 mg. We can work with lower amounts for preliminary analysis.

Standard characterization packages complete in 1-2 weeks. Rapid analysis for time-sensitive projects available. Complex PTM analysis or custom assays may require 3-4 weeks.

Yes. For challenging proteins or novel applications, we develop custom characterization methods. This includes assay optimization, specificity testing, and validation according to ICH guidelines.

Absolutely. Comparability studies are a key service for biosimilar development and process changes. We provide side-by-side analysis using orthogonal methods with statistical comparison of results.

Ready to Characterize Your Protein?

Contact us to discuss your characterization requirements and receive a customized proposal.