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(-) Description

Title :  POLYPHEMUSIN I NMR SOLUTION STRUCTURE
 
Authors :  J. P. S. Powers, A. Rozek, R. E. W. Hancock
Date :  21 Nov 03  (Deposition) - 31 Aug 04  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (17x)
Keywords :  Polyphemusin, Beta Hairpin, Disulfide Bridge, Anti- Microbial Peptide, Antimicrobial Peptide (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  J. P. S. Powers, A. Rozek, R. E. W. Hancock
Structure-Activity Relationships For The Beta-Hairpin Cationic Antimicrobial Peptide Polyphemusin I.
Biochim. Biophys. Acta V. 1698 239 2004
PubMed-ID: 15134657
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - POLYPHEMUSIN I
    ChainsA
    EngineeredYES
    Other DetailsTHE PEPTIDE WAS CHEMICALLY SYNTHESIZED USING FMOC SOLID STATE SYNTHESIS. THE SEQUENCE OF THE PEPTIDE IS NATURALLY FOUND IN TACHYPLEUS POLYPHEMUS (AMERICAN HORESHOE CRAB).
    SyntheticYES

 Structural Features

(-) Chains, Units

  
NMR Structure (17x)

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 1)

NMR Structure (1, 1)
No.NameCountTypeFull Name
1NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:18BINDING SITE FOR RESIDUE NH2 A 19

(-) SS Bonds  (2, 2)

NMR Structure
No.Residues
1A:4 -A:17
2A:8 -A:13

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1RKK)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1RKK)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1RKK)

(-) Exons   (0, 0)

(no "Exon" information available for 1RKK)

(-) Sequences/Alignments

NMR Structure
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
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Chain A from PDB  Type:PROTEIN  Length:19
 aligned with PPM1_LIMPO | P14215 from UniProtKB/Swiss-Prot  Length:18

    Alignment length:19
                                            18     
                                    10       | 
            PPM1_LIMPO    1 RRWCFRVCYRGFCYRKCR-  -
               SCOP domains d1rkka_ A:          SCOP domains
               CATH domains ------------------- CATH domains
               Pfam domains ------------------- Pfam domains
         Sec.struct. author ......ee....ee..... Sec.struct. author
                 SAPs(SNPs) ------------------- SAPs(SNPs)
                    PROSITE ------------------- PROSITE
                 Transcript ------------------- Transcript
                  1rkk A  1 RRWCFRVCYRGFCYRKCRx 19
                                    10        |
                                             19-NH2

   Legend:   → Mismatch (orange background)
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  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure
(-)
Class: Peptides (792)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1RKK)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1RKK)

(-) Gene Ontology  (2, 2)

NMR Structure(hide GO term definitions)
Chain A   (PPM1_LIMPO | P14215)
biological process
    GO:0042742    defense response to bacterium    Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        PPM1_LIMPO | P142151x7k 2b5k

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