Enzymatic bioconjugation

Precise conjugation, made simple.

Site-specific enzymatic bioconjugation for programmable payload attachment.

Small tag
N-terminal, C-terminal or internal loop
Full conversion
Substrate synthesis and conjugation in one pot
~$1/g precursor
Bulk NAD⁺ plus a simple alkyne or azide alcohol

Applications

Fluorescent labelingCy3 azide on an alkyne-tagged protein: saturated within 20 min by in-gel fluorescence.
BiotinylationQuantitative biotin-PEG4 attachment in 10 min.
Protein immobilizationCovalent capture on commercial azide agarose; withstands very high imidazole wash.
Protein & DNA conjugationN–N, C–C and branched protein–protein fusions, and coupling to a 45-nt azido oligo.
The technology

Enzymatic precision and efficiency for your bioconjugation experiments.

Most site-specific methods achieve precision only at the cost of long tags, costly custom substrates, or fussy chemistry. Enzura uses a proprietary bacterial enzyme that recognises a short peptide motif and covalently installs an alkyne or azide handle on a single threonine within it. The handle-bearing substrate is itself made enzymatically, from NAD⁺ and a simple alcohol, in the same tube.

Protein of interest Small tag, any site enzymatic step Handle installed At a specific site click Payload attached dye · biotin · DNA · protein
Substrate synthesis and handle installation run together in one pot; the click step accepts any azide or alkyne partner.

Site-specific by design

Programmable tag

Works at the N-terminus, the C-terminus or in an internal loop.

One-pot reaction with low-cost substrates

No custom synthesis. The click-ready substrate is made enzymatically from bulk NAD⁺ (~$1/g) and a commodity alkyne or azide alcohol.

Stable bond, minimal scar

A phosphodiester linkage that survives phosphatase and nuclease treatment and a broad range of pH, temperature and buffer additives.

How it works

Three steps, one pot.

Steps 1 and 2 run together in a single tube with no intermediate purification. Step 3 is standard click chemistry.

01 — SYNTHESIZE

Make the click substrate

We convert NAD⁺ and a small alkyne or azide alcohol into a click-ready dinucleotide. Entirely enzymatic: no organic synthesis, no protecting groups.

02 — BOND

Install the handle

Our proprietary enzyme recognises a small proprietary tag and transfers the handle-bearing phosphoribose onto its threonine. Unreacted NAD⁺ is not a substrate, so the two enzymes coexist without cross-talk.

03 — CLICK

Conjugate your payload

React the alkyne or azide with any complementary partner: dyes, biotin, oligonucleotides, another tagged protein, or a functionalised resin.

Our mission

Make precise conjugation simple, cheap, and accessible.

Precise bioconjugation shouldn’t depend on long protein tags, custom substrates, or specialized chemistry. Enzura Biotech aims to change that.

Let's build the next bioconjugate, together.

We're looking for partners, collaborators, and investors. Tell us your target and payload and we'll tell you whether the tag fits.

Or email us directly at info@enzurabiotech.com