Yeasen GMP Grade mRNA Enzymes and Nucleotides for vaccine and drug development

The rapid advancement of biotechnology has had a profound impact on combating infectious diseases like COVID-19 through the creation of mRNA vaccines produced via in vitro RNA synthesis technology. Numerous companies, including Moderna in the United States, CureVac in Germany, and BioNTech in Germany, have not only developed therapeutic mRNA vaccines but also treatments for conditions such as tumors, infectious diseases, and chronic illnesses.

The research and formulation of mRNA vaccines necessitate a diverse range of raw materials to ensure their successful development. As a pioneering force in the molecular enzyme industry, Yeasen has achieved success in creating various molecular enzymes and reagents through advanced molecular enzyme biotechnology and large-scale protein fermentation and purification techniques.

To guarantee both product quality and production capacity, Yeasen has established a GMP-level production facility in Wuhan, capable of fully satisfying industrial-scale production requirements with an annual capacity exceeding 5 billion units. Additionally, Yeasen stands as the first Chinese company to obtain the ISO 13485 certification for research, development, manufacturing, and distribution of molecular enzymes. This certification assures the quality, consistency, and traceability of all their reagents.


1. Advantage of GMP
2. Yeasen can provide GMP-grade Products
3. Yeasen Acquired DMF Numbers for Many Products
4. Application scenarios of Yeasen products
5. Raw materials for mRNA vaccine preparation provided by Yeasen
6. Ordering Information


1. Advantage of GMP

"GMP-grade" is a branding term that Yeasen uses to describe reagents manufactured at ISO 13485 certified facilities. Yeasen’s GMP-grade reagents are produced in compliance with ISO 13485 quality management system standards and with more stringent process controls and complete documentation records. Yeasen can not only offer high-quality reagents but also provide documents, site audits, and other support to our customers.

Table 1. Advantage of GMP

Quality Controls Research level GMP-grade
Animal free Animal-derived material may be used Animal-free certificates can be provided if required
Cell bank characterization Less stringent Stringent (compliant with GMP regulations)
Traceability information for raw materials and finished product Less stringent Stringent (compliant with GMP regulations)
Endotoxin level control / Stringent
Sterile control / Stringent
Batch records for manufacturing and testing Less stringent Stringent (Batch records can beh provided if required)
Process validation report / The report can be provided if required
Change control system Self-assessment Stringent (compliant with GMP regulations)
Quality management system Self-assessment ISO 13485 certification
DMF number / Yes (reporting)


2. Yeasen can provide GMP-grade Products

Leveraging extensive expertise and technical excellence in enzyme development and industrial-scale production, Yeasen has established a cutting-edge facility known as "mRNAtools." This facility, spanning 50,000 square feet, adheres to GMP regulations and boasts state-of-the-art features, including 2×1500L automated fermentation units, large-scale purification equipment, and lyophilization capabilities. mRNAtools is dedicated to delivering stringent reagents that align with customer production and regulatory requirements.

Yeasen's molecular enzyme production facility, purpose-built for GMP-grade products, safeguards product quality on both a hardware and software level. It comprises a highly skilled team of 70 professionals, each possessing extensive GMP production experience. The warehousing and logistics operations are modularized, ensuring the safe storage and efficient transportation of products. A nationwide multi-center distribution network further guarantees a reliable supply cycle.


3. Yeasen Acquired DMF Numbers for Many Products

Drug master files (DMFs) are confidential documents voluntarily submitted to the US Food & Drug Administration (FDA). They contain detailed information about facilities, processes, or articles utilized in the production, processing, packaging, and storage of human drug products.

The FDA scrutinizes the technical content of a DMF when an active pharmaceutical ingredient (API) manufacturer references it to support their Investigational New Drug Application (IND), New Drug Application (NDA), Abbreviated New Drug Application (ANDA), or Export Application. DMFs play a pivotal role in these applications. When manufacturers file DMFs for specific materials, the FDA approval process can be significantly expedited.

Yeasen possesses DMF files that can streamline project timelines. If desired, you may request reference authorization to our DMFs to support your FDA application. To initiate the reference authorization of our DMFs, kindly submit a Letter of Authorization request to Yeasen, requesting that we provide an FDA Center-specific DMF Letter of Authorization.


4. Application scenarios of Yeasen products

4.1 Template Generation

Plasmid linearization is an indispensable step during template generation when plasmid vectors are used as transcription templates. As transcription proceeds to the end of DNA templates, plasmid linearization ensures that RNA transcripts of a defined length and sequence are generated. Yeasen provides various restriction enzymes to meet your needs. We recommend selecting restriction enzymes that generate blunt ends or 5´-overhangs. 

4.2 In Vitro Transcription ( IVT )

In vitro transcription is affected by various factors. Enzymes, buffers, and modified substrates all have a great impact on transcription efficiency.

Based on the ZymeEditor platform, YEASEN Biotech has evolved novel T7 RNA polymerases which significantly reduce the generation of dsRNA during the in vitro transcription (IVT) process (T7 RNA Polymerase, low ds RNA, 250 U/μL). It greatly lowers the immunogenicity of mRNA and, to a certain extent, enhances the integrity of mRNA. This development is expected to play a crucial role in advancing the development of mRNA vaccines and cancer drugs. 

Figure 1. Quantitative analysis of dsRNA produced by T7 RNA polymerase mutants.

By optimizing the buffer and adjusting the salt type of the nucleotide substrate, we greatly improved the efficiency of transcription and reduced the production of dsRNA.


Figure 2. Tris NTP can greatly enhance the lVT efficiency and reduce dsRNA production

4.3 mRNA Capping

As a 5´ cap structure reduces immunogenicity and is required for efficient translation of mRNAs, adding cap structures to the 5′ ends of mRNA generated by transcription is necessary. 

Figure 3. Cap rate detection results (LC-MS detection)

4.4 mRNA Purification

Purification is an indispensable step to achieving high-purity mRNAs.


5. Raw materials for mRNA vaccine preparation provided by Yeasen

At present, Yeasen can provide a complete set of products in the production process of mRNA stock solution. The products are strictly controlled by GMP production and fully meet the requirements of mRNA vaccine production.

Table 2. Raw materials for mRNA vaccine preparation provided by Yeasen

Template preparation

In vitro transcription

2× Hieff Canace® AdvanceFast High-Fidelity PCR Master Mix


T7 High Yield RNA Synthesis Kit


dNTP Set Solution


T7 RNA Polymerase


Hieff Clone® Universal One Step Cloning Kit 


Pyrophosphatase,Inorganic GMP-grade


Gold T4 DNA Ligase


Murine RNase inhibitor GMP-grade


 BspQI GMP-grade


DNase I


 Bsa I GMP-grade


NTP Set Solution


RNAse R (20U/uL) 14606ES

Pseudo UTP sodium solution GMP-grade (100 mM)


Xba I


N1-Me-Pseudo UTP sodium solution GMP-grade (100 mM)






mRNA Vaccinia Capping Enzyme GMP-grade


Hieff NGS™ RNA Cleaner


mRNA Cap
2´-O-Methyltransferase GMP-grade


Magnetic Separation Rack 



S-adenosylmethionine (SAM) GMP-grade


 Double-stranded RNA (dsRNA) ELISA kit 


ARCA (Anti Reverse Cap Analog) 




6. Ordering Information

The following are representative products offered by Yeasen. Additional sizes are available. Our products are highly optimized to work in concert, to help ensure superior performance and reproducibility. We can also provide customized services. If you’re interested in a product that isn’t shown, contact us and we’ll work with you to meet your needs.

Table 3. Ordering Information

Product name SKU Specifications
T7 RNA Polymerase (low ds RNA, 250 U/μL)  10628ES 10/100KU
T7 High Yield RNA Synthesis Kit 10623ES 50/100/500 T
T7 RNA Polymerase GMP-grade (50 U/μL)  10624ES 5000/50000 U
T7 RNA Polymerase GMP-grade(250 U/μL)  10625ES 10/100 KU
10×Transcription Buffer 2 GMP-grade 10670ES 1/10 mL
Pyrophosphatase,Inorganic GMP-grade 0.1 U/μL)  10672ES 10/100/1000 U
Murine RNase inhibitor GMP-grade 10621ES 10/20/100 KU
BspQI GMP-grade  10664ES 500/2500 U
DNase I GMP-grade  10611ES 500/2000/10000 U
mRNA Vaccinia Capping Enzyme GMP-grade  10614ES 2000/10000/100000 U
mRNA Cap 2'-O-Methyltransferase GMP-grade  10612ES 2000/10000/50000 U
10×Capping buffer GMP-grade 10666ES 1/10 mL
S-adenosylmethionine (SAM)(32 mM) 10619ES 0.5/25/500 mL
Pseudouridine-5-triphosphate,trisodium salt solution (100 mM) 10650ES 20 μL/100 μL/1 mL
N1-Me-Pseudo UTP sodium solution(100 mM) 10651ES 20 μL/100 μL/1 mL
ATP Solution(100 mM) 10129ES 1/25/500 mL
CTP Solution(100 mM) 10130ES 1/25/500 mL
UTP Solution(100 mM) 10131ES 1/25/500 mL
GTP Solution(100 mM) 10132ES 1/25/500 mL
NTP Set Solution (ATP, CTP, UTP, GTP, 100 mM each) 10133ES 1 Set (4 vial)
Hieff NGS™ RNA Cleaner 12602ES 1/5/60/450 mL
ATP Tris Solution GMP-grade ( 100 mM) 10652ES 1/5/25/500 ml
CTP Tris Solution GMP-grade ( 100 mM) 10653ES 1/5/25/500 ml
GTP Tris Solution GMP-grade ( 100 mM) 10655ES 1/5/25/500 ml
Pseudo UTP Tris Solution GMP-grade ( 100 mM) 10656ES 1/5/25/500 ml
N1-Me-Pseudo UTP Tris Solution GMP-grade ( 100 mM) 10657ES 1/5/25/500 ml
ARCA (Anti Reverse Cap Analog)  10681ES 1/5/25/500 ml
Double-stranded RNA (dsRNA) ELISA kit  36717ES 48T/96T


Regarding reading:

GMP-grade reagents for mRNA in vitro synthesis

DNase I and Their Applications in Biomedicine



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