Document Detail


Unusual binding properties of the dockerin module of Clostridium thermocellum endoglucanase CelJ (Cel9D-Cel44A).
MedLine Citation:
PMID:  19811541     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Cellulosomes are cellulolytic complexes produced by anaerobic bacteria, and are composed of a scaffolding protein and several catalytic components. The complexes are formed by highly specific interactions of one of the reiterated cohesin modules of the scaffolding protein with a dockerin module of the catalytic components. The affinities of a dockerin module of Clostridium thermocellum CelJ (Cel9D-Cel44A) for several cohesin modules from C. thermocellum and Clostridium josui scaffolding proteins were quantitatively measured by surface plasmon resonance analysis. The recombinant CelJ dockerin-containing protein interacted with three recombinant C. josui cohesin proteins as well as recombinant C. thermocellum cohesin proteins beyond the so-called 'species specificity' of the dockerin and cohesin interactions. However, this protein did not recognize a second cohesin module from the C. josui scaffolding protein, suggesting that the catalytic components are not necessarily arranged randomly on a scaffolding protein in native cellulosomes.
Authors:
Kazutaka Sakka; Yuko Kishino; Yuka Sugihara; Sadanari Jindou; Makiko Sakka; Minoru Inagaki; Tetsuya Kimura; Kazuo Sakka
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-09-10
Journal Detail:
Title:  FEMS microbiology letters     Volume:  300     ISSN:  1574-6968     ISO Abbreviation:  FEMS Microbiol. Lett.     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-10-23     Completed Date:  2009-12-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7705721     Medline TA:  FEMS Microbiol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  249-55     Citation Subset:  IM    
Affiliation:
Graduate School of Bioresources, Mie University, Tsu, Japan.
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MeSH Terms
Descriptor/Qualifier:
Amino Acid Sequence
Bacterial Proteins / metabolism*
Carrier Proteins / metabolism
Cell Cycle Proteins / metabolism
Cellulase / metabolism*
Chromosomal Proteins, Non-Histone / metabolism
Clostridium thermocellum / enzymology*
Molecular Sequence Data
Phylogeny
Protein Binding
Sequence Homology, Amino Acid
Surface Plasmon Resonance
Chemical
Reg. No./Substance:
0/Bacterial Proteins; 0/Carrier Proteins; 0/Cell Cycle Proteins; 0/Chromosomal Proteins, Non-Histone; 0/cohesins; 147258-12-6/cellulose binding protein A, Clostridium cellulovorans; EC 3.2.1.4/CelJ protein, Clostridium thermocellum; EC 3.2.1.4/Cellulase

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