Cusabio and CusAb

CUSABIO specializes in wide range of reliable antibodies, recombinant proteins and highly sensitive ELISA kits. They also supply raw materials for production of diagnostic kits.

CUSABIO products cover research areas such as biosynthesis/metabolism, neurobiology, cytokine, growth factor, autoimmunity and so on. They have more than 10000 types of ELISA kits for 37 species; over 6000 antibodies; thousands of high-quality recombinant proteins produced from the prokaryotic and eukaryotic expression systems; small molecule antigens and standards used in drug residue testing, food safety and other fields.

Besides the high quality products, CUSABIO also provides comprehensive customized services to different customers from academic and government research institutions, as well as biotech and pharmaceutical companies.

CUSABIO is a world renowned ELISA kit manufacturer. They have advanced platforms for the development of ELISA kit, mature antigen-antibody research and development system. They are proficient in a variety of ELISA technologies, such as the double-antibody sandwich, double antigen sandwich, (direct) competition ELISA, indirect competition ELISA, blocking method, indirect ELISA and other methods. Combined with diagnostic kits development team, they are able to develop the kits with clinical diagnostic standard, and supply worldwide. CUSABIO now offers a broad range of ELISA kits covering more than 9,000 different assay targets.

Proteins and antibodies are under a subsidiary of CUSABIO – CusAb:

CusAb now offers more than 36000 Transmembrane Proteins

Transmembrane protein plays an important role in basic physiological processes, including molecule transport, signal transduction, energy utilization, etc. Almost 30% genes in genomic sequence encode transmembrane proteins, of which 50% are targets for currently known drugs. However, expression and purifacation of transmembrane protein is very difficult. CusAb has established a special transmembrane protein expression system. We could produce 35000+ transmembrane proteins and could also provide marker proteins at mg level, for NMR and X-ray studies.

Most Popular Transmembrane Proteins:

  • GPCR (G protein–coupled receptor) Adrb2, CXCR1, CXCR6, GPR160, GPRC5A, HRH3, HRH4, HTR1A, HTR2B, HTR3C, HTR3D, HTR3E, HTR4, RXFP3, VN1R5
  • AQP (Aquaporin) AQPz, AQP1, AQP2, AQP3, Aqp4, Aqp5, AQP6, AQP7, AQP8, AQP9, AQP10, AQP11
  • Ion Channel CLIC1, CLIC6, CNGA4, KCNJ10, KCNJ2, KCNN3, KCNN4, MSL2, Nach, SCN2B, SCN3B
  • HLA (Human leukocyte antigen) HLA-A, HLA-B, HLA-C, HLA-DRB1, HLA-E, HLA-G
  • ABC (ATP-binding cassette transporter) ABCB5, ABCB8, ABCB10, ABCC13, ABCC2, ABCD2, ABCD4, ABCG2, ABCG4, ABCG5
  • Others CD151, CD19, CD1E, CD44, HRD1, IFITM1, PLP1, Slc27a2, SLC31A1, SMO

2019 Novel Coronavirus

CUSABIO paid close attention to the progression of SARS-CoV-2. Once obtaining the virus gene sequence information, CusAb quickly developed and produced SARS-CoV-2 related products, including the Spike protein (S), N protein (N) and ACE2. Moreover, we also provide several products about coronavirus to meet the needs of scientific research.

For the complete list of CUSABIO Novel Coronavirus related products, click here.

Why choose CUSABIO protein ?

  • 100% Risk Free-Performance Guaranteed
  • Strict QC Process
  • Professional R&D Team
  • Customer Testimonials
  • The Characteristics of Five Expression Systems
  • Multiple Tags for Recombinant Protein
  • Bulk Order Available, Multiple Delivery Form
  • Animal-free
  • Good Manufacturing Practices GMP-grade Proteins

Latest CUSABIO and CUSAB Singapore promotion:

  1. CUSABIO/CusAb currently offers 70 native proteins, 100 small molecule antigens, 320 active proteins, 1000+ recombinant proteins in stock, 5700+ developed recombinant proteins, 10,000+ cDNA clones, 36,000+ transmembrane proteins, 500,000+ semi-customized recombinant proteins. Please click here to search for proteins of your interest.

Good news to buy CusAb’s in-stock proteins: 20% discount from 1st May to 31st July 2020!

  1. We are extending the CUSABIO trial kit promotion last year for you to have a chance to experience their products – We are offering 24T (24 wells) trial size for new customers to test CUSABIO ELISA kits at an unbelievable price. Standards are included in each trial kit. Please quote “CSB24-2020” in your email to us when you inquire about this trial kit promotion. **Limited stocks available
  2. Now CUSABIO ELISA kits are available in 96T, 5x96T and 10x96T. We are offering FREE shipping for bulk package size of 5x96T and 10x96T for a limited period.
  3. Special 2020 Summer ELISA Promotion

Cusabio has recently launched Human Novel Coronavirus Nucleoprotein (SARS-CoV-2 N) IgG ELISA Kit, we are offering extra 10% discount for your first order. Include “Corona-2020” in your email subject when you request for quote from us.


For Cusabio Singapore sales promotions and technical enquiries, please contact us at here.