# PROTEINA CO.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/proteina-co

- Industry: Healthcare Specialists
- Headquarters: Seoul, South Korea
- Website: www.proteina.co.kr
- Total disclosed funding: $38M
- Latest round: Series D (Dec 14, 2023)
- Investors on record: 11

## About

Based in Seoul, South Korea and founded in 2015, PROTEINA CO., LTD. is a company with DNA-based diagnostics technology called Protein-Protein Interaction Profiling (PPI), a single-molecule pull-down and co-immunoprecipitation(co-IP) methods to capture the interaction of target protein and probe protein within the excitation volume. PPI confirms the real-time activation of cancer signal pathways by directly seeing the relevant proteins. The company develops a co-immunoprecipitation (co-IP) technology. In October 2025, LB Investment sold 524,961 shares in PROTEINA CO., LTD. for approximately KRW 14.94 billion. Following the transaction, LB Investment retained a 4.42% minority stake in the company.

## Funding rounds

- Series D, Dec 14, 2023, $13M — Korea Development Bank
- Series C, Jul 5, 2021, $17M — AJU IB Investment, LB Investment, Mirae Asset Capital, G.N.TECH Venture Capital, Posco Investment, Timefolio Asset Management, Mirae Asset Venture Investment, K-Run Ventures
- Series B, Dec 22, 2018, $7.1M — LB Investment
- Series A, Aug 1, 2016, $1.8M — AJU IB Investment, LB Investment, Posco Investment, K-Run Ventures, KNet Investment Partners, Xoloninvest

## Investors

- AJU IB Investment (https://capitalatlas.ai/funds/aju-ib-investment) — Series A, Series C
- LB Investment (https://capitalatlas.ai/funds/lb-investment) — Series A, Series B, Series C
- Posco Investment (https://capitalatlas.ai/funds/posco-investment) — Series A, Series C
- K-Run Ventures (https://capitalatlas.ai/funds/k-run-ventures) — Series A, Series C
- KNet Investment Partners (https://capitalatlas.ai/funds/knet-investment-partners) — Series A
- Xoloninvest (https://capitalatlas.ai/funds/xoloninvest) — Series A
- Mirae Asset Capital (https://capitalatlas.ai/funds/mirae-asset-capital) — Series C
- G.N.TECH Venture Capital (https://capitalatlas.ai/funds/g-n-tech-venture-capital) — Series C
- Timefolio Asset Management — Series C
- Mirae Asset Venture Investment (https://capitalatlas.ai/funds/mirae-asset-venture-investment) — Series C
- Korea Development Bank (https://capitalatlas.ai/funds/korea-development-bank) — Series D