All 22 custom antibody services — discovery, engineering, developability →
Antibody affinity engineering
Custom Antibody Services

Every antibody campaign we run — now on one menu

From de novo discovery to picomolar lead engineering, browse the exact service your project needs. Each one is a workflow we've actually run, with the data to prove it. Flexible terms, no downstream royalties.

Abwiz Bio offers 22 custom antibody discovery and engineering services from one San Diego lab: rabbit monoclonal and VHH discovery, phospho-, hapten- and anti-idiotype antibodies, STEM™ affinity maturation from nanomolar to picomolar KD, and antibody humanization across species — every service is a workflow we have run, with published data behind it.

Up to 1,300×Affinity improvement
4.4 pMBest KD from STEM™
15/15Humanization (multi-species)
>1010Library diversity
25Peer-reviewed papers

Pick your starting point

Have only a target? Start in Discovery. Already have a lead sequence? Jump to Engineering. Need a hard-to-make specificity — phospho, hapten, glycan, anti-idiotype? Those are in Discovery too. Every service below is scoped individually and quoted on request.

Discovery — you have a target

No sequence, no antibody yet. We raise a brand-new mAb or VHH from your target antigen, cells, or tissue using patented WizAmp™ phage display.

DSC-RAB

Rabbit mAb Discovery (RabWiz™)

De novo rabbit monoclonals for your toughest targets.

Best for: You have only a target and need a diagnostic or therapeutic lead
pM KD leads · 8 peer-reviewed papers
See the data →Rabbit phage display accesses rare functional antibodies

Full details →

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DSC-VHH

VHH / Single-Domain (Nanobody) Discovery

Camelid single-domain antibodies for hidden epitopes.

Best for: You need a small, stable binder or a building block for multivalent formats
CFH VHH at 1.71 pM (Biacore)

Full details →

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DSC-MEM

Membrane & Difficult-Antigen Discovery

Cell-based panning for targets you cannot express as a recombinant protein.

Best for: Multi-pass membrane proteins and antigens that resist solubilization
Native-antigen panning platform (e.g. CB1 GPCR rabbit mAb)
See the data →Antibodies to multi-transmembrane proteins by peptide immunization

Full details →

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DSC-FUN

Functional / Neutralizing Antibody Discovery

Find the clones that actually move your function.

Best for: Neutralization, blocking, or agonism is the primary endpoint
Anti-IgE & anti-HRF Fabs · SARS-CoV-2 broadly-neutralizing mAbs · PAR1 antagonist IC50
See the data →Mechanism-guided panning reveals a hidden neutralizing lineage

Full details →

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DSC-HAP

Small-Molecule / Hapten Antibody

Antibodies to targets too small to be immunogenic — even in samples full of cross-reactive look-alikes.

Best for: Detecting drugs, metabolites, or residues in an assay
Documented hapten antibodies (8-OHdG, antibiotics)
See the data →Antibody to a small-molecule oxidative-stress marker (8-OHdG)

Full details →

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DSC-AID

Anti-Idiotype Antibody

Antibodies that recognize your drug's variable region.

Best for: PK/PD assays, bridging ADA, free vs. bound discrimination
Extensive anti-id experience · all formats, incl. type-3 (complex-only)
See the data →Anti-idiotype antibodies for therapeutic drug monitoring

Full details →

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DSC-PTM

Phospho / PTM-Specific Antibody (pS-Wiz)

Monoclonals specific to a single phospho-site.

Best for: Signaling research and phospho-assay development
Live phospho product line (e.g. Akt pSer273)
See the data →Cell panning selects phosphorylation-specific rabbit mAbs

Full details →

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DSC-GLY

Carbohydrate / Glycan & Sulfation Antibody

Specificity against sugars, glycans, and sulfation.

Best for: Hard-to-target glycan or PTM detection
CCR5 sulfotyrosine mAb: 0.81 nM KD, site-specific (J Biol Chem 2025) · O-GlcNAc assets
See the data →Site-specific antibodies for sulfated GPCR N-termini (CCR5, J Biol Chem 2025)

Full details →

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Engineering & Optimization — you have a lead

Send us an amino-acid sequence. We re-engineer it for affinity, kinetics, specificity, developability, or format — with benchtop selection, not in-silico guesses alone.

ENG-AM

Affinity Maturation (STEM™)

Drive your lead into picomolar KD.

Best for: You have a lead but need higher affinity
5.9 nM to 4.4 pM · up to 1,300× · patented for therapeutic use
See the data →STage-Enhanced Maturation (STEM) technology

Full details →

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ENG-ATT

Affinity Attenuation / De-tuning

Deliberately dial affinity down into a target window.

Best for: Agonists or T-cell engagers where binding is too strong
Case study: affinity-variant clones obtained
See the data →STEM affinity-engineering examples

Full details →

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ENG-AVID

Avidity Engineering

Separate monovalent affinity from avidity.

Best for: Avidity-dependent function such as receptor clustering
Documented case study
See the data →Avidity engineering: monovalent Fab vs bivalent pseudo-IgG

Full details →

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ENG-KIN

Kinetic Tuning (on-/off-rate)

Target on-rate and off-rate independently.

Best for: Systems where kinetics, not just KD, drive function
Kinetic-selection capability

Full details →

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ENG-PH

pH-Sensitivity / Recycling Engineering

Antibodies that release antigen at pH ~6.

Best for: Tumor microenvironment, half-life extension, lower off-target
Case study: pH-sensitive anti-TNFα

Full details →

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ENG-THERM

Thermostability Engineering

Select for heat-stable clones under stress.

Best for: Manufacturability and shelf stability
Established method (peer-reviewed, 2016)

Full details →

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ENG-DEV

Developability Optimization

Strip out aggregation, viscosity, and liabilities.

Best for: Getting a clone clinic- and manufacturing-ready
Case study: improved, function retained
See the data →Developability assessment and improvement

Full details →

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ENG-EXP

Expression / Titer Rescue

Fix a functional antibody that will not express.

Best for: Poor expression is blocking manufacturing
>10× expression gain · patent filed · 71–91 mg/L in-house

Full details →

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ENG-XSP

Cross-Species Reactivity Engineering

Add cyno / mouse cross-reactivity to a lead.

Best for: Tox and efficacy studies that need animal cross-reactivity
Documented cyno / mouse cross-reactivity

Full details →

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ENG-HUM-M

Mouse mAb Humanization

Humanize a mouse lead without losing function.

Best for: Advancing a mouse-derived lead toward the clinic
15/15 humanization success
See the data →Humanization capability and experience

Full details →

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ENG-HUM-RB

Rabbit mAb Humanization

Humanize high-affinity rabbit leads (our home turf).

Best for: Taking a high-affinity rabbit lead therapeutic
Routine in-house (COVID therapeutic mAb example)

Full details →

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ENG-HUM-VHH

Llama / Alpaca (VHH) Humanization

Humanize camelid VHH domains.

Best for: Taking a VHH to clinical grade
Llama / alpaca humanization supported

Full details →

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ENG-CHIM

Chimeric Antibody Generation

Fuse your variable region to human constant.

Best for: Fast function/isotype check before humanization
Standard workflow

Full details →

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ENG-VET

Feline / Veterinary Antibody Engineering

Engineer antibodies for animal-health targets.

Best for: Veterinary therapeutics and diagnostics
Feline maturation experience

Full details →

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Every projectNo downstream royaltiesStage-gated — you approve before each next stepSoluble Fab screening before the costly IgG stageFlexible commercial terms

How an engagement works

1

Scope the campaign

Tell us your target or send your sequence. We define deliverables, timeline, and success criteria up front.

2

Design & build

AI-guided CDR design plus WizAmp™ library construction, diversity up to >1010.

3

Select & screen

Phage panning with stringency, stability and polyreactivity filters. Fabs screened in 96-well before IgG.

4

Characterize & deliver

ELISA, flow, and BLI data (optional), plus full sequences and clone data.

Frequently asked questions

What antibody discovery services does Abwiz Bio offer?

Abwiz Bio provides de novo discovery of rabbit monoclonal antibodies (RabWiz™), VHH / single-domain antibodies, membrane and difficult-antigen antibodies via cell-based panning, and functional/neutralizing antibodies. We also specialize in hard-to-raise specificities: phospho/PTM, anti-idiotype, hapten/small-molecule, and glycan antibodies. Every campaign uses our patented WizAmp™ phage display platform.

How much affinity improvement can affinity maturation achieve?

Our STEM™ platform has delivered 1,338-fold affinity improvement, reaching KD as low as 4.4 pM even when starting from low-nanomolar leads. Because we pair AI-guided library design with benchtop directed evolution, each engineered clone also passes stability and polyreactivity filters, so it is developability-ready.

How do IP and commercial terms work?

IP and commercial terms are flexible and agreed before the project starts, and our engagements carry no downstream royalties. We tailor terms to your program rather than applying a one-size-fits-all model.

Can you humanize mouse, rabbit or VHH antibodies?

Yes. We humanize mouse, rabbit, and llama/alpaca (VHH) antibodies by CDR grafting onto human germline frameworks, then restore affinity through Vernier-residue back-mutation and, when needed, STEM™ affinity maturation. Our humanization success rate is 15/15.

What data do I receive at the end of a project?

Deliverables depend on the service but typically include full VH/VL sequences, recombinant IgG or VHH, and characterization by ELISA and flow cytometry, with BLI binding data optional after IgG purification, plus functional assay data on request.

Can I start mid-workflow if I already have a lead antibody?

Absolutely. Discovery, humanization, and each engineering service can be run standalone. If you already have a lead, send the amino-acid sequence and we begin directly at affinity maturation, developability, expression rescue, or format engineering.

Not sure which service fits?

Send us your target or your sequence. A scientist — not a sales rep — will tell you the fastest route to the antibody you need, and quote it.

Request a Quote
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Abwiz Bio is a registered scientist.com supplier. If your organization procures research services through scientist.com, you can request any service on this page inside your existing approved workflow — no new vendor setup needed.

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Abwiz Bio — Custom Antibody Services. Flexible terms, no downstream royalties.
Abwiz Bio Inc. · 9823 Pacific Heights Blvd, Suite J, San Diego, CA 92121, USA · info@abwizbio.com · +1 858-352-6911