2RTS

Chitin binding domain1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Solution structure of the chitin-binding domain 1 (ChBD1) of a hyperthermophilic chitinase from Pyrococcus furiosus.

Mine, S.Nakamura, T.Sato, T.Ikegami, T.Uegaki, K.

(2014) J Biochem 155: 115-122

  • DOI: 10.1093/jb/mvt104
  • Primary Citation of Related Structures:  
    2RTS

  • PubMed Abstract: 
  • A chitinase, from Pyrococcus furiosus, is a hyperthermophilic glycosidase that effectively hydrolyses both α and β crystalline chitin. This chitinase has unique structural features; it contains two catalytic domains (AD1 and AD2) and two chitin-binding domains (ChBD1 and ChBD2) ...

    A chitinase, from Pyrococcus furiosus, is a hyperthermophilic glycosidase that effectively hydrolyses both α and β crystalline chitin. This chitinase has unique structural features; it contains two catalytic domains (AD1 and AD2) and two chitin-binding domains (ChBD1 and ChBD2). We have determined the structure of ChBD1, which significantly enhances the activity of the catalytic domains, by nuclear magnetic resonance spectroscopy. The overall structure of ChBD1 had a compact and globular architecture consisting of three anti-parallel β-strands, similar to those of other proteins classified into carbohydrate-binding module (CBM) family 5. A mutagenesis experiment suggested three solvent-exposed aromatic residues (Tyr112, Trp113 and Tyr123) as the chitin-binding sites. The involvement of Tyr123 or the corresponding aromatic residues in other CBMs, has been demonstrated for the first time. This result indicates that the binding mode may be different from those of other chitin-binding domains in CBM family 5. In addition, the binding affinities of ChBD1 and ChBD2 were quite different, suggesting that the two ChBDs each play a different role in efficiently increasing the activities of AD1 and AD2.


    Organizational Affiliation

    National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577 and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
chitinase A73Pyrococcus furiosus DSM 3638Mutation(s): 0 
Gene Names: PF1234
Find proteins for Q8U1H4 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore Q8U1H4 
Go to UniProtKB:  Q8U1H4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2RTS Olderado

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2013-08-19 
  • Released Date: 2014-04-23 
  • Deposition Author(s): Uegaki, K.

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-23
    Type: Initial release