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(-) Description

Title :  SPATIAL STRUCTURE AND MEMBRANE PERMEABILIZATION FOR LATARCIN-1, A SPIDER ANTIMICROBIAL PEPTIDE
 
Authors :  P. V. Dubovskii, P. E. Volynsky, A. A. Polyansky, V. V. Chupin, R. G. Efremov, A. S. Arseniev
Date :  30 Mar 07  (Deposition) - 18 Mar 08  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Continuous Helix, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. V. Dubovskii, P. E. Volynsky, A. A. Polyansky, D. V. Karpunin, V. V. Chupin, R. G. Efremov, A. S. Arseniev
Three-Dimensional Structure/Hydrophobicity Of Latarcins Specifies Their Mode Of Membrane Activity.
Biochemistry V. 47 3525 2008
PubMed-ID: 18293934  |  Reference-DOI: 10.1021/BI702203W
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - LATARCIN-1
    Chains: A
    Engineered: YES
    Other Details: THE PEPTIDE WAS CHEMICALLY SYNTHESIZED. THIS SEQUENCE OCCURS NATURALLY IN SPIDER (LACHESANA TARABAEVI) VENOM.
    Synonym: LTC-1
    Synthetic: YES

 Structural Features

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NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

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 Sequence-Structure Mapping

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(-) 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:26
 aligned with LAT1_LACTA | Q1ELT9 from UniProtKB/Swiss-Prot  Length:88

    Alignment length:26
                                    72        82      
            LAT1_LACTA   63 SMWSGMWRRKLKKLRNALKKKLKGEK 88
               SCOP domains -------------------------- SCOP domains
               CATH domains -------------------------- CATH domains
               Pfam domains Latarcin-2pcoA01      ---- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------------- SAPs(SNPs)
                    PROSITE -------------------------- PROSITE
                 Transcript -------------------------- Transcript
                  2pco A  1 SMWSGMWRRKLKKLRNALKKKLKGEK 26
                                    10        20
   Legend:   → Mismatch (orange background)
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 Classification and Annotation

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(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: no clan defined [family: Latarcin] (1)

(-) Gene Ontology  (6, 6)

NMR Structure(hide GO term definitions)
Chain A   (LAT1_LACTA | Q1ELT9)
biological process
    GO:0019835    cytolysis    The rupture of cell membranes and the loss of cytoplasm.
    GO:0042742    defense response to bacterium    Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
    GO:0050832    defense response to fungus    Reactions triggered in response to the presence of a fungus that act to protect the cell or organism.
    GO:0044179    hemolysis in other organism    The cytolytic destruction of red blood cells, with the release of intracellular hemoglobin, in one organism by another.
    GO:0031640    killing of cells of other organism    Any process in an organism that results in the killing of cells of another organism, including in some cases the death of the other organism. Killing here refers to the induction of death in one cell by another cell, not cell-autonomous death due to internal or other environmental conditions.
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 Specified in the PDB File

2g9p LTC2A, AN ANTIMICROBIAL PEPTIDE BELONGING ALSO TO THE LATARCIN FAMILY