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New page: left|200px<br /> <applet load="2jnj" size="450" color="white" frame="true" align="right" spinBox="true" caption="2jnj" /> '''Solution structure of the p8 TFIIH subunit'...
 
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[[Image:2jnj.gif|left|200px]]<br />
[[Image:2jnj.gif|left|200px]]<br /><applet load="2jnj" size="350" color="white" frame="true" align="right" spinBox="true"  
<applet load="2jnj" size="450" color="white" frame="true" align="right" spinBox="true"  
caption="2jnj" />
caption="2jnj" />
'''Solution structure of the p8 TFIIH subunit'''<br />
'''Solution structure of the p8 TFIIH subunit'''<br />


==Overview==
==Overview==
Trichothiodystrophy (TTD) is a rare hereditary multi-system disorder, associated with defects in nucleotide excision repair (NER) and, transcription as consequences of mutations in XPB, XPD and p8/TTD-A, subunits of transcription factor IIH (TFIIH). Here, we report the solution, structure of the p8/TTD-A protein, a small alpha/beta protein built around, an antiparallel beta-sheet that forms a homodimer with an extended, interface. In order to characterize the dimer interface, we have, introduced a mutation at position 44, which destabilizes the dimeric form, of the protein. We have shown that this mutation has no effect on the, intrinsic ability of p8/TTD-A to stimulate NER in vitro, but affects the, capacity of p8/TTD-A to restore TFIIH concentration in TTD-A fibroblasts., Point mutations found in TTD-A patients are discussed on the basis of the, present structure.
Trichothiodystrophy (TTD) is a rare hereditary multi-system disorder associated with defects in nucleotide excision repair (NER) and transcription as consequences of mutations in XPB, XPD and p8/TTD-A subunits of transcription factor IIH (TFIIH). Here, we report the solution structure of the p8/TTD-A protein, a small alpha/beta protein built around an antiparallel beta-sheet that forms a homodimer with an extended interface. In order to characterize the dimer interface, we have introduced a mutation at position 44, which destabilizes the dimeric form of the protein. We have shown that this mutation has no effect on the intrinsic ability of p8/TTD-A to stimulate NER in vitro, but affects the capacity of p8/TTD-A to restore TFIIH concentration in TTD-A fibroblasts. Point mutations found in TTD-A patients are discussed on the basis of the present structure.


==Disease==
==Disease==
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==About this Structure==
==About this Structure==
2JNJ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2JNJ OCA].  
2JNJ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JNJ OCA].  


==Reference==
==Reference==
Solution Structure and Self-association Properties of the p8 TFIIH Subunit Responsible for Trichothiodystrophy., Vitorino M, Coin F, Zlobinskaya O, Atkinson RA, Moras D, Egly JM, Poterszman A, Kieffer B, J Mol Biol. 2007 Apr 27;368(2):473-80. Epub 2007 Feb 20. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17350038 17350038]
Solution structure and self-association properties of the p8 TFIIH subunit responsible for trichothiodystrophy., Vitorino M, Coin F, Zlobinskaya O, Atkinson RA, Moras D, Egly JM, Poterszman A, Kieffer B, J Mol Biol. 2007 Apr 27;368(2):473-80. Epub 2007 Feb 20. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17350038 17350038]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Atkinson, R.A.]]
[[Category: Atkinson, R A.]]
[[Category: Kieffer, B.]]
[[Category: Kieffer, B.]]
[[Category: Moras, D.]]
[[Category: Moras, D.]]
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[[Category: protein]]
[[Category: protein]]


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