Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), The Protein Sequencing Company™, today announced it will be presenting a poster on a new method for detection of arginine post-translational modifications (PTMs) using Platinum™, the world’s first next-generation single-molecule protein sequencing platform, at the American Association for Cancer Research's (AACR) Annual Meeting 2023. The conference will take place April 14-19, 2023 at the Orange County Convention Center in Orlando, Florida.

Dr. Kenneth Skinner, a Staff Scientist at The Company, will present a poster titled: Detection of arginine post-translational modifications by single-molecule protein sequencing on the Quantum-Si Platinum Platform on Tuesday, April 18, from 1:30-5:00 p.m. The poster presentation can be found at poster section 29 and the presentation number is 5301.

The poster presentation will include a novel method for demonstrating the detection and differentiation of arginine PTMs. Current PTM detection approaches, such as mass spectrometry, can be challenging as they may be hampered by low abundance or mass differences. The results indicate single-molecule protein sequencing offers not only a viable technique for the detection of arginine PTMs, but a method that may outperform these current methods. The ability to directly detect arginine PTMs is vitally important for biomedical research, and points to potential future applications of Platinum in critical areas of cancer research such as biomarker development, PTM crosstalk, and drug discovery.

Platinum is the world’s first next-generation single-molecule protein sequencing platform. Quantum-Si’s single-molecule technology monitors amino-acid specific patterns in fluorescent probe behavior using a single probe. Its elegant simplicity enables broad-scale access to proteomic data, making it a critical instrument for the future of proteomics research. With its small 19.5-inch by 8.5-inch footprint benchtop design and low price-point of $70,000, Platinum is poised to accelerate breakthroughs across scientific disciplines, from drug discovery to biotech, and help people live healthier and longer lives.

About Quantum-Si Incorporated

Quantum-Si, The Protein Sequencing Company™, is focused on revolutionizing the growing field of proteomics. The Company's suite of technologies is powered by a first-of-its-kind semiconductor chip designed to enable next-generation single-molecule protein sequencing and digitize proteomic research in order to advance drug discovery and diagnostics beyond what has been possible with DNA sequencing. Learn more at quantum-si.com.

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