40+ years of excellence in custom synthesis and bioconjugation services.
Calculators, design tools, and educational content to support your research.
Design and synthesis of recursively branched peptide dendrimers, peptide dendrons and multifunctional multivalent constructs for targeting, vaccine research, molecular imaging, delivery systems, antimicrobial studies and nanomedicine.
Dendrimer peptides are highly branched, tree-like peptide architectures engineered to display multiple copies of peptides, targeting ligands, drugs, imaging agents or other functional molecules from one molecular scaffold. Compared with conventional branched peptides, they provide greater ligand density, controlled multivalency and more extensive opportunities for multifunctional conjugation.
Bio-Synthesis designs and manufactures custom dendrimer peptides using lysine- and other amino acid-based branching strategies. Generation, valency, linker chemistry, terminal functionality, purification and analytical characterization are planned together so the architecture supports the intended biological application.
Defined generations with increasing terminal-group density.
Match the number of displayed ligands to the biological objective.
Combine targeting, detection, delivery or payload elements.
Purification and analytical methods selected for molecular complexity..
Dendrimer peptides are most useful when a project requires high ligand density, controlled multivalency or several functions within one construct.
Present multiple copies of a binding ligand to promote cooperative target engagement when the receptor geometry and spacing are favorable.
Create multiple terminal groups for peptide display, labeling, payload attachment or orthogonal conjugation strategies.
Combine targeting, imaging, therapeutic or delivery components within a single, defined molecular architecture.
Important design principle: all peptide dendrimers are multivalent architectures, but not every multivalent or branched peptide is a dendrimer. Dendrimers are distinguished by repeated, generation-based branching rather than a single branch point.
Use the tabs to compare structural architecture with functional design. Branched, MAP and dendrimer describe how a construct is built; multiepitope and bispecific describe what it is designed to do.
Branched Peptides
MAP Peptides
Dendrimer Peptides
Multiepitope Peptides
Bispecific Peptides
The broadest structural category: any peptide containing one or more branch points. Best when the construct needs a limited number of arms without a full generation-based dendritic scaffold.
Structural umbrella
One or several branch points
Low to moderate
Compact multivalent display
Multiple Antigen Peptide systems use a lysine-based branched core to present several copies of one or more antigenic peptide sequences, commonly for immunization and antibody-generation research.
Specific branched architecture
Antigen presentation
Lysine matrix
Antibody and vaccine research
Repeated branching generations create many terminal groups and support high-valency display or several distinct functions within one construct.
Advanced dendritic architecture
Recursive generations
Moderate to high
Targeting, delivery and imaging
Multiepitope is a functional classification. Several distinct antigenic regions are combined in one construct, which may be linear, branched, MAP-based or dendrimeric.
Functional design
Linear or branched
Different antigenic regions
Multi-antigen immune studies
Bispecific designs contain two different binding domains intended to engage two targets, receptors or cell types. They may be linear, branched or incorporated into a dendritic scaffold.
Usually two specific domains
Dual-receptor targeting
A dendrimer project involves several separate design decisions. First select the chemical scaffold, then define the molecular architecture, add the required functional components, and establish a manufacturing and characterization strategy. Bio-Synthesis can evaluate these layers together rather than treating them as isolated modifications.
The scaffold defines the core chemistry, branching behavior, payload capacity and compatibility with peptide synthesis or post-synthesis conjugation.
Fully peptide-based branching compatible with SPPS, biodegradable designs and sequence-defined peptide dendrimers.
Highly regular polymeric dendrimers with abundant surface groups and strong payload-loading potential.
Hydrophilic spacing can improve solubility, reduce steric crowding and increase accessibility of terminal ligands.
Combines peptide, polymer or spacer elements to balance biodegradability, loading, accessibility and pharmacologic behavior.
Architecture describes how peptide domains are organized and what biological function the construct is intended to perform.
One or several branch points for compact multivalent presentation.
Lysine-based multiple antigen display for immunology and antibody programs.
Generation-based recursive branching for high-density, multifunctional display.
Several distinct epitopes arranged within one immune-focused construct.
Two recognition domains designed to engage different targets or functions.
Functionalization can be introduced during synthesis or through orthogonal post-synthesis conjugation, depending on the architecture and payload.
Purification and analytical methods must be selected for the final molecular construct, not for an unconjugated peptide alone.
Select each design dimension to review practical considerations affecting synthesis feasibility, biological performance and analytical characterization.
1. Valency
2. Core & Branching
3. Linkers
4. Functional Components
5. Purification & QC
Increasing valency can improve avidity, but it also raises molecular weight, hydrophobicity, aggregation risk and purification difficulty.
Number of active terminal groups
Target spacing and receptor density
Solubility and steric crowding
Comparative lower-valency control
Lysine is commonly used, while Orn, Dab, Dap and custom multifunctional cores can adjust spacing and architecture.
Controls branch spacing
Controls terminal-group count
Direct, convergent or modular
Sequence-dependent feasibility
Spacer length and flexibility should reflect ligand size, target accessibility and whether cargo release is required.
Improves reach and accessibility
Can improve aqueous handling
For triggered cargo release
Excessive flexibility or heterogeneity
Define which branches carry targeting ligands, imaging labels, therapeutic sequences or conjugation handles and whether each component must be site-specific.
Same or mixed terminal ligands
Peripheral or focal-point attachment
Protecting-group and click strategy
Confirm each component remains accessible
Large or highly branched peptides may require complementary purification and characterization methods because conventional RP-HPLC and electrospray MS do not perform equally well for every construct.
Method and threshold by intended use
MS method selected by mass and charge
Peptide content or amino acid analysis
Solubility, counterion and storage
Each construct is reviewed for synthetic feasibility, protecting-group strategy, purification behavior, analytical suitability and scale.
Custom support indicates that the chemistry can be evaluated; it is not a guarantee that every sequence, generation, payload or scale will be feasible.
Bio-Synthesis can connect peptide architecture, oligonucleotide chemistry, bioconjugation, labeling and analytical characterization within one coordinated project. This integrated approach is especially valuable for multifunctional constructs that cross conventional service categories.
Branched, MAP, dendrimer, cyclic, stapled, multiepitope and bispecific formats.
Peptide–oligo, peptide–drug, peptide–protein, PEG, lipid and imaging conjugates.
Project-specific purification, HPLC/UPLC, mass spectrometry and documentation.
Display repeated ligands to investigate avidity, receptor clustering and cell-surface recognition.
Present repeated or mixed antigenic sequences on a defined peptide-based scaffold.
Combine targeting sequences with fluorescent or affinity labels for detection studies.
Attach therapeutic sequences, small molecules, lipids, polymers or nucleic-acid cargo.
Explore topology, charge density and multivalent membrane interactions.
Evaluate cationic or ligand-functionalized dendritic constructs for nucleic-acid association.
Develop self-assembling or surface-functional peptide architectures.
Organize functional residues in three-dimensional arrangements inspired by protein surfaces.
The following non-confidential examples illustrate the types of design problems that can be evaluated. Final feasibility depends on sequence, payload, valency, purity and scale.
Repeated targeting peptides arranged with hydrophilic spacers to improve accessibility and evaluate avidity.
Targeting ligands combined with a defined fluorophore placement for cellular or tissue imaging research.
Multivalent peptide display combined with an oligonucleotide component through a planned conjugation handle.
Several antigenic sequences organized on one scaffold for immunogenicity and recognition studies.
Targeting and drug-bearing elements separated by a project-specific releasable linker.
Balanced hydrophobic, charged and functional domains evaluated for biomaterial or nanostructure research.
Include termini, stereochemistry and nonstandard residues.
State the number of copies of each functional ligand.
Define flexible, hydrophilic or cleavable linker requirements.
Specify the intended application and minimum documentation.
Specify dendron or dendrimer, symmetry and tentative generation.
Provide a preferred core or request design assistance.
List fluorophores, drugs, lipids, PEG, oligos or handles.
Include scale, counterion, aliquoting and storage needs.
Explore complementary multivalent platforms and downstream modification services.
Custom dendrimer peptides, multivalent constructs, modified peptides and peptide conjugates with controlled synthesis, purification, analytical QC, documentation and project-specific packaging.
Introduced the high-density multiple antigenic peptide system and established a foundation for dendritic peptide display.
Tam JP · 1988
Reviews synthetic approaches and emerging uses of peptide dendrimers.
Sadler K; Tam JP · 2002
Summarizes biological opportunities created by multivalent dendritic scaffolds.
Cloninger MJ · 2002
Discusses peptide dendrimers as functional molecular systems and delivery agents.
Darbre T; Reymond JL · 2006
Reviews vaccine and immunostimulatory applications of dendritic constructs.
Heegaard PMH et al. · 2010
Examines self-assembly and theranostic applications of peptide dendrimers.
Xie F et al. · 2022
Trusted by biotech leaders worldwide for over 45+ years of delivering high quality, fast and scalable synthetic biology solutions.