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Why do they discuss current? Are you even for real?
Who the heck is "they"? Wikipedia?
From crystallographic structural studies of a potassium channel, assuming that this structure remains intact in the corresponding plasma membrane, it is possible to surmise that when a potential difference is introduced over the membrane, the associated electromagnetic field induces a conformational change in the potassium channel. The conformational change distorts the shape of the channel proteins sufficiently such that the cavity, or channel, opens to admit ion influx or efflux to occur across the membrane, down its electrochemical gradient. This subsequently generates an electrical current sufficient to depolarise the cell membrane.
Yes. Why does the page discuss *current*?
Voltage-gated ion channel - Wikipedia, the free encyclopedia
Yes. Why does the page discuss *current*?
Voltage-gated ion channel - Wikipedia, the free encyclopedia
Why does the "current" not involve the movement of electrons? Why does it instead involve the movement of positively charged sodium and potassium ions across a lipid membrane through protein channels? Where are the analogous lipid and amino acid polypeptide structures in your non-biological analog?
Because some random buffoon edited the article. Why should I care?
And why should I believe you rather than Wiki?
Plasmas in space are composed of all types of charged particles, not just electrons, not just protons, it even contains positrons and negatively charged ions too. So what?
And why should I believe you rather than Wiki?
Because one would hope you're not that gormless.
http://en.wikipedia.org/wiki/Voltage-gated_proton_channel#cite_note-5Voltage-gated proton channels are ion channels that have the unique property of opening with depolarization, but in a strongly pH-sensitive manner.[1] The result is that these channels open only when the electrochemical gradient is outward, such that their opening will only allow protons to leave cells. Their function thus appears to be acid extrusion from cells.[2]
Another important function occurs in phagocytes (e.g. eosinophils, neutrophils, and macrophages) during the respiratory burst. When bacteria or other microbes are engulfed by phagocytes, the enzyme NADPH oxidase assembles in the membrane and begins to produce reactive oxygen species (ROS) that help kill bacteria.[3] NADPH oxidase is electrogenic,[4] moving electrons across the membrane, and proton channels open to allow proton flux to balance the electron movement electrically.[5]
Why does the "current" not involve the movement of electrons? Why does it instead involve the movement of positively charged sodium and potassium ions across a lipid membrane through protein channels? Where are the analogous lipid and amino acid polypeptide structures in your non-biological analog?
In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma...
A flow of positive charges gives the same electric current, and has the same effect in a circuit, as an equal flow of negative charges in the opposite direction. Since current can be the flow of either positive or negative charges, or both, a convention for the direction of current which is independent of the type of charge carriers is needed. The direction of conventional current is defined arbitrarily to be the direction of the flow of positive charges.
I've yet to see you respond to my actual question. Why do they mention electron movement in this one?
Voltage-gated proton channel - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Voltage-gated_proton_channel#cite_note-5
Because some random buffoon edited the article. Why should I care?
Whatever. The "current" is the ion flux through the voltage gated channels which depolarizes the membrane. Nerves still don't conduct current, no matter that the term appears somewhere in a wiki article.
Perhaps this video will help you out (even thought the incorrectly call it a current):
Animation: The Nerve Impulse
Because of your misconception of electrical current.
Do we need to discuss electrolyte? there is a correspondence you just do not want to see it.
Direction flow is an arbitray definition to make circuits simpler because it can flow in any direction, can be negative or positive or both. It is charge *imbalance* that is all that is required. A voltage differential between two measured points.
LOL! So everyone *else* is wrong?Right.
Because you apparently don't understand how Wikipedia works and get confused when you come across an error in an article.
I've already explained that it is really talking about transmembrane ionic flux and you ignored it, so don't lie and waste our time.
This better then, authoritative enough for you?
Voltage-Gated Ion Channels - Neuroscience - NCBI Bookshelf
http://nerve.bsd.uchicago.edu/FB/IEEEvoltagegated.pdf
http://neuro.med.harvard.edu/faculty/documents/yellenMovingParts.pdf
Need more? can list about 100 others if you like.
This better then, authoritative enough for you?
Voltage-Gated Ion Channels - Neuroscience - NCBI Bookshelf
http://nerve.bsd.uchicago.edu/FB/IEEEvoltagegated.pdf
http://neuro.med.harvard.edu/faculty/documents/yellenMovingParts.pdf
I understand exactly how it works and you've yet to demonstrate it's an error in the first place!
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