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Protein

Cycloviolacin-O1

Gene
N/A
Organism
Viola odorata (Sweet violet)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Probably participates in a plant defense mechanism.

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Plant defense

Names & Taxonomyi

Protein namesi
Recommended name:
Cycloviolacin-O1
OrganismiViola odorata (Sweet violet)
Taxonomic identifieri97441 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsMalpighialesViolaceaeViola

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
PeptideiPRO_00000436091 – 30Cycloviolacin-O1Add BLAST30

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Cross-linki1 ↔ 30Cyclopeptide (Gly-Asn)
Disulfide bondi4 ↔ 21
Disulfide bondi8 ↔ 23
Disulfide bondi13 ↔ 28

Post-translational modificationi

This is a cyclic peptide.

Keywords - PTMi

Disulfide bond

Structurei

Secondary structure

130
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi9 – 11Combined sources3
Helixi17 – 19Combined sources3
Beta strandi22 – 24Combined sources3
Beta strandi27 – 30Combined sources4

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1DF6NMR-A7-30[»]
1NBJNMR-A4-30[»]
ProteinModelPortaliP82230.
SMRiP82230.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP82230.

Family & Domainsi

Domaini

The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin.

Sequence similaritiesi

Belongs to the cyclotide family. Bracelet subfamily.PROSITE-ProRule annotation

Keywords - Domaini

Knottin

Family and domain databases

InterProiIPR005535. Cyclotide.
IPR012323. Cyclotide_bracelet_CS.
[Graphical view]
PfamiPF03784. Cyclotide. 1 hit.
[Graphical view]
PIRSFiPIRSF037891. Cycloviolacin. 1 hit.
SUPFAMiSSF57038. SSF57038. 1 hit.
PROSITEiPS51052. CYCLOTIDE. 1 hit.
PS60008. CYCLOTIDE_BRACELET. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P82230-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30
GIPCAESCVY IPCTVTALLG CSCSNRVCYN
Length:30
Mass (Da):3,141
Last modified:December 5, 2001 - v2
Checksum:iB6F6DAD5755B8937
GO

Mass spectrometryi

Molecular mass is 3114.4 Da from positions 1 - 30. Determined by MALDI. 1 Publication

Cross-referencesi

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1DF6NMR-A7-30[»]
1NBJNMR-A4-30[»]
ProteinModelPortaliP82230.
SMRiP82230.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP82230.

Family and domain databases

InterProiIPR005535. Cyclotide.
IPR012323. Cyclotide_bracelet_CS.
[Graphical view]
PfamiPF03784. Cyclotide. 1 hit.
[Graphical view]
PIRSFiPIRSF037891. Cycloviolacin. 1 hit.
SUPFAMiSSF57038. SSF57038. 1 hit.
PROSITEiPS51052. CYCLOTIDE. 1 hit.
PS60008. CYCLOTIDE_BRACELET. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCYO1_VIOOD
AccessioniPrimary (citable) accession number: P82230
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 30, 2000
Last sequence update: December 5, 2001
Last modified: November 2, 2016
This is version 66 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Caution

This peptide is cyclic. The start position was chosen by similarity to OAK1 (kalata-B1) for which the DNA sequence is known.Curated

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.