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1yyb
From Proteopedia
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[[Image:1yyb.gif|left|200px]] | [[Image:1yyb.gif|left|200px]] | ||
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'''Solution structure of 1-26 fragment of human programmed cell death 5 protein''' | '''Solution structure of 1-26 fragment of human programmed cell death 5 protein''' | ||
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[[Category: Wang, J F.]] | [[Category: Wang, J F.]] | ||
[[Category: Yao, H W.]] | [[Category: Yao, H W.]] | ||
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Revision as of 13:57, 3 May 2008
Solution structure of 1-26 fragment of human programmed cell death 5 protein
Overview
PDCD5-(1-26) is a N-terminal 26-residue fragment of human PDCD5 (programmed cell death 5) protein. PDCD5 is an important novel protein that regulates both apoptotic and non-apoptotic programmed cell death. The conformation of PDCD5 protein is a stable helical core consisting of a triple-helix bundle and two dissociated terminal regions. The N-terminal region is ordered and contains abundant secondary structure. Overexpression and purification of the N-terminal 26-residure fragment, PDCD5-(1-26), was performed in this study to better understand its tertiary structure. The spectroscopic studies using CD and hetero- and homo-nuclear NMR methods determine a stable alpha-helix formed by Asp3-Ala19 of PDCD5-(1-26). The N-terminal residues Asp3-Ala19 of PDCD5 were then affirmed to have the capacity to form a stable alpha-helix independently of the core of the protein. Analysis of the helical peptide of PDCD5-(1-26) indicates that the surface of this well-formed alpha-helix has a unique electrostatic potential character. This may provide an environment for the N-terminal alpha-helix of PDCD5 to serve as an independent functional entity of the protein. The apoptosis activity assay shows that the deletion of the N-terminal alpha-helix of PDCD5 significantly attenuates the apoptosis-promoting effects on HL-60 cells induced by serum withdrawal.
About this Structure
1YYB is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The N-terminal 26-residue fragment of human programmed cell death 5 protein can form a stable alpha-helix having unique electrostatic potential character., Liu D, Yao H, Chen Y, Feng Y, Chen Y, Wang J, Biochem J. 2005 Nov 15;392(Pt 1):47-54. PMID:16083422 Page seeded by OCA on Sat May 3 16:57:24 2008
