RNA World Hypothesis
Source: Walter Gilbert, Nature 319, 1986; Thomas Cech, Cell, 1982 (Nobel 1989); Jack Szostak; Lincoln & Joyce, Science 323, 2009 Institution: Multiple
Finding
The RNA World proposes that before DNA and proteins, life was based on RNA molecules serving as both information carriers and catalysts (ribozymes). Cech discovered self-splicing RNA; Altman discovered catalytic RNase P (Nobel 1989). Lincoln and Joyce demonstrated RNA self-replication in vitro. The hypothesis proposes the first boundary — where chemistry became biology. A self-replicating molecule introduces the distinction between the molecule that copies and the substrate it copies from: the primordial equator.
Pattern Mapping
Alignment — A ribozyme’s catalytic function and informational content are carried in the same molecule. There is no gap between what the molecule “says” (sequence) and what it “does” (catalysis). In DNA-protein life, this unity was later separated, creating the possibility of misalignment.
Connections
- Miller-Urey Experiment — Miller-Urey provides building blocks; RNA World provides replication
- The Lipid Bilayer — two complementary origin-of-life frameworks: replication and containment
- Autocatalytic Sets — alternative self-organization pathway; may be complementary (→ Meta-Pattern 02: The Boundary Pre-Exists)
- Evo 2 Genomic Model — genomic equator in modern models echoes the primordial boundary
- Concentration of Measure — the mathematical equator and the primordial equator share boundary structure
Status
Ribozymes are established molecular biology (Nobel 1989). The RNA World is the leading hypothesis but remains unproved — no complete RNA-based self-replicating system from prebiotic chemistry. See Robertson & Joyce, Cold Spring Harbor Perspectives in Biology, 2012. The mapping to the five properties is this project’s structural interpretation.
The mapping to the five properties is this project’s structural interpretation.