We do not rely solely on mutation. Our capability to express and analyze proteins with complex, high-mannose, and trimmed glycoforms allows us to precisely map the functional role of N-linked glycans on therapeutic binding.
There is no product in the shopping cart, buy it!
Are you currently facing challenges in obtaining high-resolution structural data for complex, glycosylated therapeutic targets or difficulty in designing highly selective biologics? Our One-Stop Glycan Crystal & Glycoprotein Crystal Analysis Services help you accelerate lead optimization and define precise therapeutic mechanisms through integrated structural biology, advanced glyco-engineering, and comprehensive biophysical validation. Glycoproteins, characterized by their N- or O-linked glycosylation, are critical cell surface targets in immunology, virology, and oncology. The complexity introduced by these heterogeneous sugar chains is the major challenge in structural biology. Creative Biolab's service leverages the power of X-ray Crystallography to overcome these hurdles, providing atomic models essential for defining function, characterizing ligand binding sites, and establishing the precise structure-activity relationship. This foundation is necessary for rational drug design.
Fig.1 Crystal structure of viral glycoprotein B.1
Our glycoprotein crystal analysis services provide the atomic-resolution insights. We address the core challenge of membrane-associated and heavily glycosylated targets by delivering high-fidelity structural data, which is essential for rational drug design and mechanism validation. Glycoprotein crystallographic analysis is a multifaceted service that requires specialized expertise in molecular biology, biochemistry, and crystallography to yield high-quality, actionable data. The Creative Biolab workflow is tailored to minimize project risk and maximize the success rate for challenging glycoprotein targets:
The typical timeframe for this service ranges from 12 to 20 weeks, depending heavily on the inherent crystallizability of the target and the difficulty of the phasing challenge. We deliver high-resolution PDB coordinates and structure factors, a detailed structural and mechanistic analysis report.
Creative Biolab provides specialized crystal analysis tailored to the client's objective:
| Service | Objective | Key Application |
|---|---|---|
| Glycoprotein Crystal based Structural & Functional Analysis Service | Determines the atomic structure of the glycoprotein in its native or stabilized state, establishing the full 3D fold and domain arrangement. | Rational drug and vaccine design; Structure-activity relationship (SAR) studies; Understanding disease mechanism. |
| Glycoprotein Crystal based Glycosylation Site Analysis Service | Identifies the physical location of N-linked sites and assesses the structural role of surrounding residues and local glycan shielding. It's crucial for engineering antigens and understanding biological functions. | Vaccine design; Bio-similar development. |
| Glycoprotein Crystal based Glycosylation Type Analysis Service | Utilizes differential expression and Endo H treatment combined with BLI/ITC to correlate glycan type with functional parameters (affinity, kinetics, thermodynamics). | Optimization of expression system for manufacturing; Fab screening for glycan-independent binding. |
| Crystal based Glycoprotein & Carbohydrate Binding Analysis Service | Achieves co-crystal structures by soaking (small molecules) or co-crystallization (Fab fragments) to visualize the molecular contacts. | Small molecule lead generation; Structure-guided design of glycan mimetics. |
We specialize in decoding the intricate mechanisms of complex biological systems:
We do not rely solely on mutation. Our capability to express and analyze proteins with complex, high-mannose, and trimmed glycoforms allows us to precisely map the functional role of N-linked glycans on therapeutic binding.
Our methods are specifically tuned to expose the subtle, yet critical, structural features that viruses use for survival.
We don't just solve structures and interpret their functions. This expertise allows us to identify critical interfaces for therapeutic targeting.
This research details the initial crystal structure of the pre-fusion form of the Nipah virus (NiV) Fusion (F) glycoprotein, a molecule critical for initiating host cell membrane merger. The structural analysis first resolved the basic unit of the protein, revealing a tree-like trimer where three identical F subunits interweave around a central axis (as illustrated in the Figure). The most striking discovery, however, was that these F trimers do not exist in isolation but spontaneously assemble into a much larger, ring-shaped hexamer-of-trimers structure, consisting of six trimers total. This higher-order oligomer was confirmed in solution and visualized on virus-like particles (VLPs) using electron tomography, suggesting it is the physiological assembly on the virus surface.
Fig.2 Structure of the NiV-F protein trimer.2
ELISA only confirms binding; our analysis provides the atomic blueprint. Structures differentiate between competitive and allosteric binding, map the exact epitope of your antibody lead, and reveal critical mechanistic insights. This allows for rational, rather than empirical, optimization.
Glycan heterogeneity is the single biggest barrier. We overcome this by utilizing a tiered approach:
- Targeted construct design (Ig domain truncations);
- Expression in HEK293S cells to yield uniform high-mannose glycans;
- Enzymatic Endo H treatment to leave behind only a single GlcNAc. This dramatically reduces heterogeneity and improves crystal ordering.
Absolutely. By solving the structure, we can distinguish the active sites and critical interaction interfaces. This atomic-level information is vital for designing drugs that selectively block one function while preserving the other, minimizing adverse effects. Contact us to discuss your selective targeting strategy.
Precision Affinity Data
"Using Creative Biolab's glycoprotein crystal analysis services in our research has significantly improved our ability to resolve low-affinity ligand-glycoprotein interactions using ITC, allowing us to accurately measure affinities in the 200-300μM range that were previously impossible to quantify reliably."- A***an, PhD.
Glycan Focus
"The glycoprotein crystal analysis services offered unparalleled insight into N-linked glycan positioning, confirming that the N286 glycan on our Ig-fold therapeutic target physically restricts Fab binding, a key finding that resolved our antibody development bottleneck. The Endo H treated constructs were instrumental."- E***la, Senior scientist.
To ensure a seamless transition from target identification to lead optimization, Creative Biolab offers complementary services essential for structural biology projects:
Creative Biolabs' platform provides the integrated structural and biophysical rigor to deliver actionable, atomic-resolution data. By partnering with us, you gain access to a platform dedicated to generating these mechanism-defining structures, cutting years off lead optimization, and dramatically improving the probability of developing selective, potent, and safe therapeutic leads. Ready to transform your most challenging targets into atomic blueprints? Please contact us to inquire about more details.
References