The First Pore: Closure, Aperture, and the Reconciliation of Impermeance with Supply
- 1Annals of the Chrysene Formalism San Francisco , California , USA
Abstract
One family of substituted chrysenes is held to supply everything a minimal vessel needs: the nucleic acid, the membrane, the encoding, and the anchor holding one to the other. Earlier articles built the enclosure, read the encoding optically, and showed the vessel's volume to be set by a single impermeant species it makes for itself. What the account has lacked is any way to move a molecule across its own membrane. This paper supplies one from the same chemistry. An aperture is a hole in a patch of surface; a pore is a passage through a bilayer, and the difference is a wall no earlier article names. Here it is built along the one substituted axis the encoding leaves free: units joined end to end along 6–12 by phosphodiester formation into columns spanning the core, closed into rings by the same chemistry along 3–9. Only the tetrasubstituted unit can serve, any other spending both arms on the column. Each column keeps a free terminal arm on the lumen side, which tethers it to the strand — so the pore is addressed by the sequence it sits in — and the covalent linkage is what holds a unit in the far leaflet, where no tether reaches. A torsion scan over the aryl phosphodiester shows that a ring closes at every size without strain, and that the phosphorus lies outside the chord joining two columns in every closing conformer, being the apex of the bend. The bridges therefore set the aperture and never intrude on it: its size follows from bond geometry and from nothing adjustable. Closure constrains a trimer and nothing larger — a trimer encloses 0.254 nm, and 0.207 to 0.258 nm over its whole closure set, while a tetramer encloses whatever its conformers give it. Measured as clearances to one van der Waals surface, ammonium passes with 0.050 nm to spare and any residue bearing a side chain is excluded, by 0.021 nm at the smallest, since a minimum enclosing cylinder cannot be reduced by adding atoms. No occupant is required and none would fit. A pore passing the osmolyte would end the cycle rather than help it, the vessel filling until it can no longer divide; selectivity is the requirement, and geometry alone meets it, with no occupant, condensation or excited state. The ion admitted is consumed on arrival by the excision that makes the osmolyte, so the influx is a trap and not a leak: impermeance survives while the particle count is fed. One pore costs two hundredths of a per cent of the pool and is wanted at a millionth of an ion channel's capacity, so what matters is how little it leaks, and no conductance is claimed. The consequence for the programme is a dual function on no new chemistry: the tetrasubstituted unit, already the precursor of the tethered nucleotide and through it of the phospholipid anchor, is also the only species the filter can be made from, so one component assembles the vessel and then regulates its volume, addressed by the sequence it helped encode.
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BibTeX
@article{schaper2026first,
title = {{The First Pore: Closure, Aperture, and the Reconciliation of Impermeance with Supply}},
author = {Charles D. Schaper},
journal = {Annals of the Chrysene Formalism},
year = {2026},
month = oct,
doi = {10.68366/en23gq52},
url = {https://doi.org/10.68366/en23gq52},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - The First Pore: Closure, Aperture, and the Reconciliation of Impermeance with Supply
AU - Charles D. Schaper
PY - 2026
DA - 2026/10/17
JO - Annals of the Chrysene Formalism
DO - 10.68366/en23gq52
UR - https://doi.org/10.68366/en23gq52
AB - One family of substituted chrysenes is held to supply everything a minimal vessel needs: the nucleic acid, the membrane, the encoding, and the anchor holding one to the other. Earlier articles built the enclosure, read the encoding optically, and showed the vessel's volume to be set by a single impermeant species it makes for itself. What the account has lacked is any way to move a molecule across its own membrane. This paper supplies one from the same chemistry. An aperture is a hole in a patch of surface; a pore is a passage through a bilayer, and the difference is a wall no earlier article names. Here it is built along the one substituted axis the encoding leaves free: units joined end to end along 6–12 by phosphodiester formation into columns spanning the core, closed into rings by the same chemistry along 3–9. Only the tetrasubstituted unit can serve, any other spending both arms on the column. Each column keeps a free terminal arm on the lumen side, which tethers it to the strand — so the pore is addressed by the sequence it sits in — and the covalent linkage is what holds a unit in the far leaflet, where no tether reaches. A torsion scan over the aryl phosphodiester shows that a ring closes at every size without strain, and that the phosphorus lies outside the chord joining two columns in every closing conformer, being the apex of the bend. The bridges therefore set the aperture and never intrude on it: its size follows from bond geometry and from nothing adjustable. Closure constrains a trimer and nothing larger — a trimer encloses 0.254 nm, and 0.207 to 0.258 nm over its whole closure set, while a tetramer encloses whatever its conformers give it. Measured as clearances to one van der Waals surface, ammonium passes with 0.050 nm to spare and any residue bearing a side chain is excluded, by 0.021 nm at the smallest, since a minimum enclosing cylinder cannot be reduced by adding atoms. No occupant is required and none would fit. A pore passing the osmolyte would end the cycle rather than help it, the vessel filling until it can no longer divide; selectivity is the requirement, and geometry alone meets it, with no occupant, condensation or excited state. The ion admitted is consumed on arrival by the excision that makes the osmolyte, so the influx is a trap and not a leak: impermeance survives while the particle count is fed. One pore costs two hundredths of a per cent of the pool and is wanted at a millionth of an ion channel's capacity, so what matters is how little it leaks, and no conductance is claimed. The consequence for the programme is a dual function on no new chemistry: the tetrasubstituted unit, already the precursor of the tethered nucleotide and through it of the phospholipid anchor, is also the only species the filter can be made from, so one component assembles the vessel and then regulates its volume, addressed by the sequence it helped encode.
SN - 3144-2021
ER -