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Bioelectricity  ·  Article

Ion channels and pumps

Ion pumps and ion channels are the membrane proteins that set cell voltage. Pumps use energy from ATP to move ions across the membrane.1 Channels let charge move down the resulting gradients, which changes those gradients and produces bioelectrical signals.2 Authors in this corpus argue that these signals carry information about growth and anatomy, not only about excitation.4

Earliest held
2008, Sundelacruz S, Levin M…
Most discussed in
Mechanisms Underlying Influence of…, 2022
In the library
505 passages in 71 works
Rewritten
2026-10-03
18501875190019251950197520002025Pietak A, Levin M, 20161Pietak A, Levin M, 20162Thurber AE, Nelson M, Frost CL, Levin…, 20173Manicka S, Levin M, 20194McMillen P, Oudin MJ, Levin M, Payne SL, 20215George LF, Bates EA, 20226Mathews J, Kuchling F, Baez-Nieto D…, 20227Silic MR, Zhang G, 20238Levin M, 20239
01

Pumps and channels

Pietak and Levin (2016) describe the division of labour in their Bioelectric Tissue Simulation Engine. Pumps such as the sodium potassium pump use free energy from ATP hydrolysis to move ions across the insulating membrane.1 Channels then let charge move under the concentration and voltage gradients this creates. That movement alters charge densities and gradients, and so produces bioelectrical signals.2 Manicka and Levin (2019) use a minimal version of this arrangement in a model of non-neural bioelectric networks. Their cells have one sodium-potassium pump that works to maintain a non-zero membrane potential.3

02

Channels in development

McMillen and colleagues (2021) argue that bioelectric signaling differs from growth factor signaling. Information is encoded not by specific proteins but by physiological parameters set by the action of many diverse channels.4 George and Bates (2022) review mutations that change tissue size. In zebrafish, mutations in the potassium channel gene kcnk5b lead to enlarged fins. Mutations in the gap junction gene connexin43 lead to shorter fins.5 Silic and Zhang (2023) add that kcnj15 was mapped to long-finned betta fish, a result from a different teleost.6

03

Channels in cancer

Thurber and colleagues (2017) report that many cancer types have altered channel expression. They note that most studies treat channels as downstream executors of signaling. They say evidence suggests channels may also act upstream, and that little is known about how channel activity starts signaling cascades.7 Mathews and colleagues (2022) chose drugs by their predicted effects on membrane voltage. They cite amphibian work in which voltage control prevented and reversed tumorigenesis and metastatic behavior.8

04

Channels and evolvability

Levin (2023) gives channels a role in the link between genes and anatomy. He treats bioelectric networks as hidden layers of a control network. The link from channel genes to bioelectric pattern, and from pattern to anatomy, is each easier to invert than the direct genotype to anatomy link.9 On this view the control problem splits into two easier problems. Voltage also acts as a coarse-grained parameter over many channel and protein states, so individual electrogenic proteins can be swapped out.9

SourcesEach quotation was checked word for word against the passage it opens.
  1. Ion pumps, such as the sodium potassium pump (Na/K-ATPase), use free-energy released from ATP hydrolysis to move ions across the insulating cell membranePietak A, Levin M, 2016 · Exploring Instructive Physiological Signaling with the Bioelectric Tissue… · open at passage 13
  2. Ion channels in the plasma membrane allow charge to move under these concentration and voltage gradients, altering charge densities and thereby changing the concentration and voltage gradients to create bioelectrical signals.Pietak A, Levin M, 2016 · Exploring Instructive Physiological Signaling with the Bioelectric Tissue… · open at passage 13
  3. evidence suggests ion channels may have upstream regulatory roles as well, and little is known about the ability of ion channel activity to initiate signaling cascadesThurber AE, Nelson M, Frost CL, Levin M, Brackenbury WJ…, 2017 · IK channel activation increases tumor growth and induces differential… · open at passage 2
  4. There is a single sodium-potassium ion pump that actively strives to maintain a non-zero membrane potential (Vmem).Manicka S, Levin M, 2019 · Modeling somatic computation with non-neural bioelectric networks · open at passage 7
  5. Bioelectric signaling fundamentally differs from growth factor-based signaling in that information is encoded not by specific proteins but by physiological parameters established by the action of many diverse ion channels.McMillen P, Oudin MJ, Levin M, Payne SL, 2021 · Beyond Neurons: Long Distance Communication in Development and Cancer · open at passage 10
  6. In zebrafish, mutations in the potassium channel gene kcnk5b lead to enlarged fins while mutations in the gap junction gene connexin43 lead to shorter finsGeorge LF, Bates EA, 2022 · Mechanisms Underlying Influence of Bioelectricity in Development · open at passage 11
  7. Our drugs were selected based on their predicted effects on Vmem, which has been shown in amphibian models in vivo to prevent and reverse tumorigenesis and metastatic behaviorMathews J, Kuchling F, Baez-Nieto D, Diberardinis M, Pan…, 2022 · Ion Channel Drugs Suppress Cancer Phenotype in NG108-15 and U87 Cells: Toward… · open at passage 51
  8. The inwardly rectifying channel gene kcnj15 was mapped to long-finned betta fish [113].Silic MR, Zhang G, 2023 · Bioelectricity in Developmental Patterning and Size Control: Evidence and… · open at passage 23
  9. The relationships of ion channel genes to the bioelectric pattern, and bioelectric pattern to its resulting anatomy, are each easier to invert than the direct genotype–anatomy linkLevin M, 2023 · Darwin's agential materials: evolutionary implications of multiscale competency… · open at passage 41
Linked ideas
Resting membrane potentialpart of / contains
Pietak and Levin describe pumps and channels as the machinery by which cells create and change Vmem.
Gap junctionsrelated to
Manicka and Levin pair channels and pumps with gap junctions in cell networks; George and Bates link connexin43 mutations to shorter zebrafish fins.
McMillen and colleagues cite channel mutations and endogenous bioelectric prepatterns as essential for normal morphogenesis.
Hyperpolarization in the modern papers is produced by opening K+ channels, using channel openers or mutations; Lillie instead links depolarization to permeability change.
Receptor channels such as NMDA receptors are the excitatory route to muscle depolarization in Herrera-Rincon and colleagues.
Misexpressed hyperpolarizing channels, and native CLIC1 chloride channels, reduced tumour incidence in tadpoles.
Neuhof et al. cite voltage-mediated circuits in planaria whose perturbation changes regeneration outcomes; channels are the usual way to alter them.
Regenerationrelated to
Pharmacological targeting of ion channels and pumps revealed a voltage pathway needed for planarian head regeneration.
Pai et al. (2017) report that the HCN4 channel is required for early events regulating left-right asymmetry.
Schofield and colleagues and George and Bates describe channels that respond to mechanical force, which ties mechanics to ionic signaling.
Fields and Levin describe barium, a potassium channel blocker, destroying planarian heads, and regrown heads that tolerate it.
Levin (2025) cites ion channel genes and bioelectrical parameters as the glue that scales up the cognitive light cone.
Both are ancient preneural signaling mechanisms that neurons only optimized. Passages pair ion channels, gap junctions and neurotransmitters in planarian patterning and cancer control; serotonin receptor activation also opens potassium channels.
Passages show proton-pumping respiratory complexes build the proton motive force, while the mPTP channel opening depolarizes the membrane and collapses it. Nothing covers growth, patterning or cancer.
Bayliss and Lillie reason from ion permeability of the membrane, the same question later framed in terms of channels, though the passages do not use that term.
Permeability changes from Na/Ca soap ratios are an early, non-molecular account of how ions cross membranes; the held passages name no channels.
Ion channels are the hardware implementing homeostats: Levin says voltage-gated channels form feedback loops implementing memories and homeostats; Fields and Bongard say the same channels serve cell homeostasis and anatomical setpoint control.
The voltage-gated permeability transition pore and calcium handling tie mitochondrial depolarization to channel-like behaviour in the inner membrane.
Pai and colleagues note that the threshold voltage of HCN channels is affected by metabolic state.
Evolvabilityrelated to
Levin (2023) argues that voltage states give modularity, a known component of evolvability, between channel genes and anatomy.
Polarityrelated to
Passages link them causally: asymmetric ion channel and pump distribution, from the egg onward, creates asymmetric ion gradients and Vmem patterns that drive left-right and A/P axis patterning; epithelial apical/basolateral domains differ.
Passages treat them as separate topics: Xenobots self-replicate by gathering loose frog cells; potassium channel modulation sets bioelectric signals (eye formation). Both appear in Levin's agential-materials argument, but no direct link is stated.
Respiratory-chain proton pumping builds the mitochondrial membrane potential and proton motive force that ATP synthase uses; the mPTP channel opening dissipates it. Membrane potential arises from transport or respiratory redox.
Where it is discussedPassages matching ion channel, ion channels, ion pump, proton pump
2022Mechanisms Underlying Influence of Bioelectricity in Development · George LF, Bates EA43
2016Exploring Instructive Physiological Signaling with the Bioelectric Tissue… · Pietak A, Levin M28
2023Bioelectricity in Developmental Patterning and Size Control: Evidence and… · Silic MR, Zhang G25
2018Emerging Roles of the Membrane Potential: Action Beyond the Action Potential · Abdul Kadir L, Stacey M, Barrett-Jolley…24
2015Bioelectric memory: modeling resting potential bistability in amphibian embryos… · Law R, Levin M23
2018The Bioelectric Code: Reprogramming Cancer and Aging From the Interface of… · Silver BB, Nelson CM16
2023The Role of Sperm Membrane Potential and Ion Channels in Regulating Sperm… · Pinto FM, Odriozola A, Candenas L…15
2022Technological Approach to Mind Everywhere: An Experimentally-Grounded Framework… · Levin M14
2022Bioelectric Dysregulation in Cancer Initiation, Promotion, and Progression · Sheth M, Esfandiari L13
2023Bioelectric networks: the cognitive glue enabling evolutionary scaling from… · Levin M13