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2za7

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{{STRUCTURE_2za7| PDB=2za7 | SCENE= }}
{{STRUCTURE_2za7| PDB=2za7 | SCENE= }}
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'''recombinant horse L-chain apoferritin N-terminal deletion mutant (residues 1-4)'''
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===recombinant horse L-chain apoferritin N-terminal deletion mutant (residues 1-4)===
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==Overview==
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The denaturation of recombinant horse L-chain apoferritin (rLF), which is composed of 24 L-chain subunits, in acidic solution was studied. Using two rLF mutants, lacking four (Fer4) or eight (Fer8) N-terminal amino acid residues, the effect of N-terminal residues on the protein's stability was investigated. Of the two mutants and wild-type rLF, the tertiary and secondary structures of Fer8 were found to be most sensitive to an acidic environment. The Fer8 protein dissociated easily into subunit dimers at or below pH 2.0. Comparing the crystal structures of the mutant proteins, deletion of the N-terminal residues was found to result in fewer inter- and intra-subunit hydrogen bonds. The loss of these bonds is assumed to be responsible for lower endurance against acidic denaturation in N-terminus-deleted mutants. These results indicated that the inter- and intra-subunit hydrogen bonds of N-terminal residues affect the denaturation, especially oligomer formation of apoferritin subunits and will be of use in designing ferritin-based nanodevices.
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{{ABSTRACT_PUBMED_17938140}}
==About this Structure==
==About this Structure==
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[[Category: Metal binding protein]]
[[Category: Metal binding protein]]
[[Category: Metal-binding]]
[[Category: Metal-binding]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 20:05:18 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 05:05:13 2008''

Revision as of 02:05, 29 July 2008

Image:2za7.png

Template:STRUCTURE 2za7

recombinant horse L-chain apoferritin N-terminal deletion mutant (residues 1-4)

Template:ABSTRACT PUBMED 17938140

About this Structure

2ZA7 is a Single protein structure of sequence from Equus caballus. Full crystallographic information is available from OCA.

Reference

Effect of N-terminal Residues on the Structural Stability of Recombinant Horse L-chain Apoferritin in an Acidic Environment., Yoshizawa K, Mishima Y, Park SY, Heddle JG, Tame JR, Iwahori K, Kobayashi M, Yamashita I, J Biochem. 2007 Dec;142(6):707-713. Epub 2007 Oct 15. PMID:17938140

Page seeded by OCA on Tue Jul 29 05:05:13 2008

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