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Gap junctions

Gap junctions

connections between cells which allow passage of small molecules and electric current. Gap junctions were first described anatomically as regions of close apposition between cells with a narrow (1-2 nm) gap between cell membranes. The variety in the properties of gap junctions is reflected in the number of connexins, the family of proteins which form the junctions.


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plasmodesm and gap junction

Both of plasmodesm (in plant cells) and gap juction (in animal cells) pass the micromolecules & ions and connect the ... Why do all plant cells have plasmodesmata but only some animal cells have gap junctions?

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by mnatashgaran
Sun Mar 31, 2013 7:42 pm
 
Forum: Cell Biology
Topic: plasmodesm and gap junction
Replies: 1
Views: 2002

Re: connexins & pannexins

... summarize what is known about the properties of the three families of gap junction proteins, connexins, innexins and pannexins, emphasizing their ... pathway. We discuss that two distinct groups of proteins form gap junctions in deuterostomes (connexins) and protostomes (innexins), and that ...

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by brad000123
Sat Oct 20, 2012 11:54 am
 
Forum: Molecular Biology
Topic: connexins & pannexins
Replies: 6
Views: 5905

How are memories created?

... create more neurons to make the new memory? Does it trigger cell division? (Though I thought neurons don't replicate.) Does it involve cell junctions? I know this is very specific, but I'm hoping someone could help me a little here. Thanks

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by animus
Thu Jun 28, 2012 11:53 pm
 
Forum: Physiology
Topic: How are memories created?
Replies: 3
Views: 3770

Re: Regulatory elements inside introns

... "intronic splice silencers". Alternative splicing is directed by proteins binding to RNA, often at regions distant from the splice junctions.

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by jonmoulton
Mon Apr 30, 2012 3:16 pm
 
Forum: Molecular Biology
Topic: Regulatory elements inside introns
Replies: 3
Views: 1953

Nervous system

I need some help with a couple of questions. 1.Factors that Could Affect Neuromuscular Junctions I. Increase in the production of adrenaline II. Inhibition of cholinesterase synthesis III. Inhibition of acetylcholine release IV. Blockage of receptor sites for acetylcholine ...

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by Catherine89
Sun Feb 05, 2012 7:22 pm
 
Forum: Human Biology
Topic: Nervous system
Replies: 0
Views: 3934
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