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1WN4

NMR Structure of VoNTR

Summary for 1WN4
Entry DOI10.2210/pdb1wn4/pdb
Related1WN8
DescriptorVoNTR protein (1 entity in total)
Functional Keywordshelix, plant protein
Total number of polymer chains1
Total formula weight2963.43
Authors
Dutton, J.L.,Renda, R.F.,Waine, C.,Clark, R.J.,Daly, N.L.,Jennings, C.V.,Anderson, M.A.,Craik, D.J. (deposition date: 2004-07-27, release date: 2004-09-14, Last modification date: 2024-05-29)
Primary citationDutton, J.L.,Renda, R.F.,Waine, C.,Clark, R.J.,Daly, N.L.,Jennings, C.V.,Anderson, M.A.,Craik, D.J.
Conserved structural and sequence elements implicated in the processing of gene-encoded circular proteins
J.Biol.Chem., 279:46858-46867, 2004
Cited by
PubMed Abstract: The cyclotides are the largest family of naturally occurring circular proteins. The mechanism by which the termini of these gene-encoded proteins are linked seamlessly with a peptide bond to form a circular backbone is unknown. Here we report cyclotide-encoding cDNA sequences from the plant Viola odorata and compare them with those from an evolutionarily distinct species, Oldenlandia affinis. Individual members of this multigene family encode one to three mature cyclotide domains. These domains are preceded by N-terminal repeat regions (NTRs) that are conserved within a plant species but not between species. We have structurally characterized peptides corresponding to these NTRs and show that, despite them having no sequence homology, they form a structurally conserved alpha-helical motif. This structural conservation suggests a vital role for the NTR in the in vivo folding, processing, or detoxification of cyclotide domains from the precursor protein.
PubMed: 15328347
DOI: 10.1074/jbc.M407421200
PDB entries with the same primary citation
Experimental method
SOLUTION NMR
Structure validation

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數據於2025-07-23公開中

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