..:: Membrane Bioenergetics Model v0.32 :: Sojo et al. (2014) ::..

Parameters

pH and concentrations

pH_o \| ocean pH:	pH_v \| vent pH:
C_Na_o \| [Na⁺]_ocean: mol L^-1 x10	C_K_o \| [K⁺]_ocean: mol L^-1 x10
C_Cl_o \| [Cl^-]_ocean: mol L^-1 x10	C_H2_v \| [H₂]_vent: mol L^-1 x10

permeability

prm_H \| permeability to H⁺: cm s^-1 x10	prm_OH \| permeability to OH^-: cm s^-1 x10
prm_Na \| permeability to Na⁺: cm s^-1 x10	prm_K \| permeability to K⁺: cm s^-1 x10
prm_Cl \| permeability to Cl^-: cm s^-1 x10

ATP synthase

HperATP \| Number of H⁺ per ATP synthesised: H⁺/ATP	Pct_ATPase \| % of ATP synthase in surface: % x10
A_Fo \| Area of each ATPase F_o subunit: m² x10	ATP max turnover: ATP s^-1 x10
ATPase_sat \| Saturation ΔG of ATPase: kJ/mol ΔG = kJ/mol	ATPase on v side?

Energy-converting hydrogenase (Ech)

HperEch \| Number of H⁺ per Ech turn: H⁺	Pct_Ech \| %Ech in surface: % x10
A_Ech \| Area of each Ech unit: m² x10	Ech max turnover: s^-1 x10

Na⁺/H⁺ antiporter (SPAP)

HperNa \| Number of H⁺ per Na⁺ extruded: H⁺/Na⁺	Pct_SPAP \| % of Na⁺/H⁺ antiporter in surface: % x10
A_SPAP \| Area of each Na⁺/H⁺ antiporter: m² x10	SPAPturnover \| Max H⁺ per SPAP per s: H⁺ SPAP^-1 s^-1 x10
SPAPdissip \| Attenuation factor of the SPAP:	SPAP towards vent

Pump!

HvsNa \| Proportion of Na⁺ (vs. H⁺) pumped: Na⁺	Pct_pump \| % of H⁺\|Na⁺ pump in surface: % x10
A_pump \| Area of each H⁺\|Na⁺ pump: m² x10	pumpTurnover \| Max H⁺\|Na⁺ per pump per s: H⁺\|Na⁺ pump^-1 s^-1 x10
Pump towards vent \| Respond to gradient
pump_H2_sat \| Saturation [H₂]: mol/L [H₂] = mol/L	pump_H2_sat \| Saturation [H₂]: log units Opposing ΔGradient = log units

Miscelaneous parameters

tStep \| duration of each time step: s 1x10 s	d \| proto-cell diameter: m x10
ventPct \| % surface facing vent: %

Do ΔG plot? | Skip: iterations

Output

pH_o =

[Na⁺]_o = mol L^-1

[K⁺]_o = mol L^-1

[Cl^-]_o = mol L^-1

d = m

A = m²

V = m³

[H₂]_v = mol L^-1

pH_v =

t = s

ventPct = %

tStep = s

T = K

H⁺/ATP | H⁺/Na⁺

% ATPase | % Ech | % SPAP | % pump

OH^-

H⁺

Na⁺

K⁺ || Cl^-

pH= | Δψ_o= mV | Δψ_v= mV | ΔG_o= kJ/mol

[Na⁺]= | [K⁺]= | [Cl^-]=

H⁺ unit^-1 s^-1 | ATP unit^-1 s^-1 | ATP s^-1

ATPase units | ATP unit^-1 s^-1

prmH = cm s^-1

prmNa = cm s^-1

pH_o \| ocean pH:	pH_v \| vent pH:
C_Na_o \| [Na⁺]_ocean: mol L^-1 x10	C_K_o \| [K⁺]_ocean: mol L^-1 x10
C_Cl_o \| [Cl^-]_ocean: mol L^-1 x10	C_H2_v \| [H₂]_vent: mol L^-1 x10

prm_H \| permeability to H⁺: cm s^-1 x10	prm_OH \| permeability to OH^-: cm s^-1 x10
prm_Na \| permeability to Na⁺: cm s^-1 x10	prm_K \| permeability to K⁺: cm s^-1 x10
prm_Cl \| permeability to Cl^-: cm s^-1 x10

HperATP \| Number of H⁺ per ATP synthesised: H⁺/ATP	Pct_ATPase \| % of ATP synthase in surface: % x10
A_Fo \| Area of each ATPase F_o subunit: m² x10	ATP max turnover: ATP s^-1 x10
ATPase_sat \| Saturation ΔG of ATPase: kJ/mol ΔG = kJ/mol	ATPase on v side?

HperEch \| Number of H⁺ per Ech turn: H⁺	Pct_Ech \| %Ech in surface: % x10
A_Ech \| Area of each Ech unit: m² x10	Ech max turnover: s^-1 x10

HperNa \| Number of H⁺ per Na⁺ extruded: H⁺/Na⁺	Pct_SPAP \| % of Na⁺/H⁺ antiporter in surface: % x10
A_SPAP \| Area of each Na⁺/H⁺ antiporter: m² x10	SPAPturnover \| Max H⁺ per SPAP per s: H⁺ SPAP^-1 s^-1 x10
SPAPdissip \| Attenuation factor of the SPAP:	SPAP towards vent

Membrane Bioenergetics Model v0.32 :: Víctor Sojo

Parameters

Output