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Dictionary » J » Junction

Junction

Junction

1. The act of joining, or the state of being joined; union; combination; coalition; as, the junction of two armies or detachments; the junction of paths.

2. The place or point of union, meeting, or junction; specifically, the place where two or more lines of railway meet or cross. Junction plate, the switch, or movable, rails, connecting one line of track with another.

Origin: L. Junctio, fr. Jungere, junctum, to join: cf. F. Jonction. See join.


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Intron: Unusual donor-acceptor splice site (GT-AG)

... obey the GT-AG rule (donor and acceptor splice site). I would like to know what actually happen if the GT-AG sites were intervened with unusual junction sequences (before GT/after AG), for eg: 1. gcgcgggc T GT GCGTC...INTRON...C AG TT gatgc [exon- INTRON -exon] 2. tgaatcagcagg GG GT GCGTC...INTRON...C ...

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by molecular09
Wed Jul 01, 2009 8:52 am
 
Forum: Molecular Biology
Topic: Intron: Unusual donor-acceptor splice site (GT-AG)
Replies: 0
Views: 224

Re: Holliday junction

Marta, A Holliday junction is like the molecular mechanism of crossing-over if you will. While crossing over is something described mostly by cytogenetisists, Holliday junctions are the topic of molecular biologists. Now, what you ...

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by MrMistery
Sat Jun 20, 2009 2:27 pm
 
Forum: Genetics
Topic: Holliday junction
Replies: 3
Views: 188

Holliday junction

... during meiosis, when the chromosomes create chiasmas. Is that process also called crossing-over? Or is crossing-over only a type of Holliday junction? How is that possible, that two not identical strands from two different molecules join together? I think that there may be some correcting ...

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by Marta
Fri Jun 19, 2009 8:01 pm
 
Forum: Genetics
Topic: Holliday junction
Replies: 3
Views: 188

Re: proteins found in the cell membrane.

... 3. Signal transduction proteins (hormone reception, coat proteins?) 4. Cell recognition (Here's your glycoproteins) 5. Intercellular joining (Your junction proteins) 6. Attachment to the Extracellular matrix and cytoskeleton. (All your stabilizing proteins, microfilaments, intermediate, and microtubules.) ...

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by keenangp
Thu Dec 18, 2008 4:54 am
 
Forum: Cell Biology
Topic: proteins found in the cell membrane.
Replies: 3
Views: 1367

What is resolvase?

What is resolvase? In a Holliday junction, does it cause the crossing over or does it does it cut the strands after it crosses over? And is it the same thing as recombinase? Thanks!

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by BioGradStudent
Tue Oct 21, 2008 1:09 am
 
Forum: Genetics
Topic: What is resolvase?
Replies: 0
Views: 364
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