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Whitepaper #247 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: life and prebiotic organics; other science themes: Early Evolution; theory, computation, and modeling
We describe current research areas and future directions related to ancient proteins and proteomes and their implications for ancient organismal ancestors. We conclude that early evolution research must continue to play an indispensable role in origin of life research and a more prominent role in the design of life detection strategies.