1st7

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{{STRUCTURE_1st7| PDB=1st7 | SCENE= }}
{{STRUCTURE_1st7| PDB=1st7 | SCENE= }}
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'''Solution structure of Acyl Coenzyme A Binding Protein from yeast'''
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===Solution structure of Acyl Coenzyme A Binding Protein from yeast===
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==Overview==
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Comparison of the folding processes for homologue proteins can provide valuable information about details in the interactions leading to the formation of the folding transition state. Here the folding kinetics of 18 variants of yACBP and 3 variants of bACBP have been studied by Phi-value analysis. In combination with Phi-values from previous work, detailed insight into the transition states for folding of both yACBP and bACBP has been obtained. Of the 16 sequence positions that have been studied in both yACBP and bACBP, 5 (V12, I/L27, Y73, V77, and L80) have high Phi-values and appear to be important for the transition state formation in both homologues. Y31, A34, and A69 have high Phi-values only in yACBP, while F5, A9, and I74 have high Phi-values only in bACBP. Thus, additional interactions between helices A2 and A4 appear to be important for the transition state of yACBP, whereas additional interactions between helices A1 and A4 appear to be important for the transition state of bACBP. To examine whether these differences could be assigned to different packing of the residues in the native state, a solution structure of yACBP was determined by NMR. Small changes in the packing of the hydrophobic side-chains, which strengthen the interactions between helices A2 and A4, are observed in yACBP relative to bACBP. It is suggested that different structure elements serve as scaffolds for the folding of the 2 ACBP homologues.
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(as it appears on PubMed at http://www.pubmed.gov), where 15690348 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15690348}}
==About this Structure==
==About this Structure==
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1ST7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST7 OCA].
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1ST7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST7 OCA].
==Reference==
==Reference==
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[[Category: Thormann, T.]]
[[Category: Thormann, T.]]
[[Category: Four helix bundle]]
[[Category: Four helix bundle]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:06:46 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:34:57 2008''

Revision as of 16:35, 28 July 2008

Image:1st7.png

Template:STRUCTURE 1st7

Solution structure of Acyl Coenzyme A Binding Protein from yeast

Template:ABSTRACT PUBMED 15690348

About this Structure

1ST7 is a Single protein structure of sequence from Saccharomyces cerevisiae. Full experimental information is available from OCA.

Reference

Different secondary structure elements as scaffolds for protein folding transition states of two homologous four-helix bundles., Teilum K, Thormann T, Caterer NR, Poulsen HI, Jensen PH, Knudsen J, Kragelund BB, Poulsen FM, Proteins. 2005 Apr 1;59(1):80-90. PMID:15690348

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