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Dictionary » H » Homeobox

Homeobox

Definition

noun, plural: homeoboxes

DNA sequence (of about 180 base pairs) contained in a gene (e.g. hox gene), and code for a protein domain (of about 60 amino acids) that is highly conserved, and can bind to DNA to control gene expression.


Supplement

An example of homeobox is the one found in homeotic genes. In fact, this is where its name was derived from since its occurrence was first discovered in homeotic gene. But not all homeoboxes are homeotic, or causing homeosis. The term homeobox refers only to the sequence in the gene.


Word origin: homeo(tic gene) + box.

Related term: homeobox gene


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Logical impossble 4 natural selection 2 generate new species

... in order to understand the origin of the vertebrate eye, or any eye, for that matter? I think not. And the reasons lie in knowing that there are homeobox genes for eye formation and that when one of them, the Rx gene in particular, is activated in the right place and at the right time, an individual ...

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by gamila
Thu Jun 11, 2009 1:40 pm
 
Forum: Evolution
Topic: Logical impossble 4 natural selection 2 generate new species
Replies: 11
Views: 358

How old is the ancestral protein likely to be.

... [Schistosoma mansoni] 58.2 1e-07 gi|2209198|gb|AAB61441.1| LOX6 [Helobdella robusta] 57.8 1e-07 gi|72008704|ref|XP_780219.1| PREDICTED: similar to homeobox [Str 57.8 1e-07 gi|74267559|dbj|BAE44278.1| hoxC4a [Oryzias latipes] >gi|8301... 57.8 1e-07 gi|86560752|gb|ABD04657.1| Hox7 homeobox protein ...

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by go&go
Wed Mar 07, 2007 4:11 am
 
Forum: Molecular Biology
Topic: How old is the ancestral protein likely to be.
Replies: 2
Views: 461

The Fiber Disease

... work being done in the biomed field. Now, if vectors can transpose DNA to other species, it will also do the same to us, if the DNA, like in Homeobox genes are similar. For instance, certain genes in the drosophila fly, the mouse, the zebra fish, yeast, e-coli are similar or have same genes ...

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by Skytroll
Thu Sep 28, 2006 3:28 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748650

The Fiber Disease

... need into humans, am I close? So there will be no difference between man, animal and plant, all will share same genes in one way or another. The Homeobox Domain. Why would one put a human gene in a rice plant? Just what is the purpose? Now, this rice is causing problems. Why the great altercation ...

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by Skytroll
Thu Sep 21, 2006 2:21 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748650

distinction b/t homeotic genes and master genes?

The homeobox is a DNA sequence which codes for a particular DNA binding domain called the homeodomain. I have also found out that the definition of a homeotic gene is not that it contains a homeobox as I previously thought. ...

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by herb386
Tue Jul 11, 2006 10:00 am
 
Forum: Genetics
Topic: distinction b/t homeotic genes and master genes?
Replies: 6
Views: 1148
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