{"id": "card_chirality_autocatalysis", "kind": "reference", "title": "Chirality & asymmetric autocatalysis — one handedness, amplified", "body": "Many molecules are chiral — they come in two mirror-image forms, R and S. Enantiomeric excess, ee = |R−S|/(R+S)×100%, measures how far a sample leans to one hand (0% = racemic 50/50; 100% = a single enantiomer). The 2026 Nobel Prize in Chemistry (Henri B. Kagan and Kenso Soai) recognized how a small handedness is AMPLIFIED. Kagan's non-linear effects (1986): a partly-impure chiral catalyst yields product of higher ee than the catalyst itself. Soai's asymmetric autocatalysis: the product catalyzes its own formation in its own handedness, so a tiny initial excess runs up toward homochirality — a molecule that makes more of itself, one-handed. It is a found answer to how life's single handedness (L-amino acids, D-sugars) could emerge from a near-symmetric start: one source, a small bias, one end. Checkable here: chemistry.enantiomeric_excess and chemistry.chiral_amplification. Cited, not generated — the Nobel announcement, nobelprize.org/prizes/chemistry/2026.", "source": {"label": "Nobel Prize in Chemistry 2026 — Kagan & Soai", "url": "https://www.nobelprize.org/prizes/chemistry/2026/", "authority_tier": "reference", "ref": "stick_chirality_and_asymmetric_autocatalysis"}, "shelf": "codex", "box": "chemistry", "bands": ["chirality", "enantiomer", "enantiomeric excess", "autocatalysis", "homochirality", "asymmetric synthesis", "Kagan", "Soai", "Nobel 2026", "chemistry", "one map"], "subject": "Chirality & asymmetric autocatalysis — one handedness, amplified", "connections": [{"to_card_id": "card_floor_chemistry", "relationship": "part_of", "evidence": "asymmetric synthesis and enantiomeric excess — chirality on the chemistry floor"}, {"to_card_id": "card_floor_physical_chemistry", "relationship": "connects_at", "evidence": "the kinetics of which hand forms — a non-linear, autocatalytic rate law"}, {"to_card_id": "card_floor_the_capstone", "relationship": "connects_at", "evidence": "one source, many potentials, one end — a symmetric field, a small bias, one handedness amplified"}, {"to_card_id": "card_floor_tree_of_life", "relationship": "connects_at", "evidence": "homochirality — life runs on a single hand (L-amino acids, D-sugars)"}, {"to_card_id": "card_k_floor_of_discovery", "relationship": "part_of", "evidence": "a proven result on the one map, rooted in the Floor of Discovery"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.chemistry", "facets": {"subject": ["Kagan", "Nobel 2026", "Soai", "asymmetric synthesis", "autocatalysis", "chirality", "enantiomer", "enantiomeric excess", "homochirality", "one map"]}, "presentation": {"glyph": "•", "kind_label": "chemistry", "by": "Nobel Prize in Chemistry 2026 — Kagan & Soai", "authority": "reference", "posted": "", "standing": "", "link": {"url": "https://www.nobelprize.org/prizes/chemistry/2026/", "host": "nobelprize.org", "provider": "", "titled": "Chirality & asymmetric autocatalysis — one handedness, amplified", "waybill_line": "", "reach": "", "embed": ""}}, "neighbors": [{"id": "card_floor_chemistry", "title": "Chemistry — quantum mechanics applied, the periodic table", "relationship": "part of", "why": "asymmetric synthesis and enantiomeric excess — chirality on the chemistry floor", "href": "/card/card_floor_chemistry", "resolved": true}, {"id": "card_floor_physical_chemistry", "title": "Physical chemistry — rate, equilibrium, acid-base, redox", "relationship": "connects at", "why": "the kinetics of which hand forms — a non-linear, autocatalytic rate law", "href": "/card/card_floor_physical_chemistry", "resolved": true}, {"id": "card_floor_the_capstone", "title": "The capstone — one source, many potentials, one end", "relationship": "connects at", "why": "one source, many potentials, one end — a symmetric field, a small bias, one handedness amplified", "href": "/card/card_floor_the_capstone", "resolved": true}, {"id": "card_floor_tree_of_life", "title": "The tree of life — chains from LUCA, homologous genes where domains meet", "relationship": "connects at", "why": "homochirality — life runs on a single hand (L-amino acids, D-sugars)", "href": "/card/card_floor_tree_of_life", "resolved": true}, {"id": "card_k_floor_of_discovery", "title": "The Floor of Discovery — one floor, and by its design the fear of God", "relationship": "part of", "why": "a proven result on the one map, rooted in the Floor of Discovery", "href": "/card/card_k_floor_of_discovery", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_chirality_autocatalysis", "next_step": {"do": "read the source itself", "door": "FIND", "web": "/reader.html?card=card_chirality_autocatalysis"}, "ends": "a verdict or a card · the trail · a seal · one next step"}}