1UVF

Solution Structure of the structured part of the 15th Domain of LEKTI


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 31 
  • Selection Criteria: LOWEST ENERGY; LEAST RESTRAINT VIOLATION 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Solution Structure of a Chimeric Lekti Domain Reveals a Chameleon Sequence

Tidow, H.Lauber, T.Vitzithum, K.Sommerhoff, C.Roesch, P.Marx, U.C.

(2004) Biochemistry 43: 11238

  • DOI: https://doi.org/10.1021/bi0492399
  • Primary Citation of Related Structures:  
    1UUC, 1UVF, 1UVG

  • PubMed Abstract: 

    The conversion of an alpha-helical to a beta-strand conformation and the presence of chameleon sequences are fascinating from the perspective that such structural features are implicated in the induction of amyloid-related fatal diseases. In this study, we have determined the solution structure of a chimeric domain (Dom1PI) from the multidomain Kazal-type serine proteinase inhibitor LEKTI using multidimensional NMR spectroscopy. This chimeric protein was constructed to investigate the reasons for differences in the folds of the homologous LEKTI domains 1 and 6 [Lauber, T., et al. (2003) J. Mol. Biol. 328, 205-219]. In Dom1PI, two adjacent phenylalanine residues (F28 and F29) of domain 1 were substituted with proline and isoleucine, respectively, as found in the corresponding P4' and P5' positions of domain 6. The three-dimensional structure of Dom1PI is significantly different from the structure of domain 1 and closely resembles the structure of domain 6, despite the sequence being identical to that of domain 1 except for the two substituted phenylalanine residues and being only 31% identical to the sequence of domain 6. The mutation converted a short 3(10)-helix into an extended loop conformation and parts of the long COOH-terminal alpha-helix of domain 1 into a beta-hairpin structure. The latter conformational change occurs in a sequence stretch distinct from the region containing the substituted residues. Therefore, this switch from an alpha-helical structure to a beta-hairpin structure indicates a chameleon sequence of seven residues. We conclude that the secondary structure of Dom1PI is determined not only by the local protein sequence but also by nonlocal interactions.


  • Organizational Affiliation

    Lehrstuhl für Biopolymere, Universität Bayreuth, Universitätsstrasse 30, 95447 Bayreuth, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
SERINE PROTEINASE INHIBITOR KAZAL TYPE 561Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NQ38 (Homo sapiens)
Explore Q9NQ38 
Go to UniProtKB:  Q9NQ38
PHAROS:  Q9NQ38
GTEx:  ENSG00000133710 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NQ38
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 31 
  • Selection Criteria: LOWEST ENERGY; LEAST RESTRAINT VIOLATION 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-04-14
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance