Evidence map›Paper›PMID 15205424›Full record

ArticleJournal of bacteriology2004

Regulation of expression of cellulosomes and noncellulosomal (hemi)cellulolytic enzymes in Clostridium cellulovorans during growth on different carbon sources.

Sung Ok Han, Hee-Yeon Cho, Hideaki Yukawa, Masayuki Inui, Roy H Doi

Abstract read
In one paragraph

Article in Journal of bacteriology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.4field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 57 citations in OpenAlex.

  1. Proteomic Characterization of theInternational journal of molecular sciences · 2025
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  20. Cellulase, clostridia, and ethanol.Microbiology and molecular biology reviews : MMBR · 2005
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Sung Ok HanSection of Molecular and Cellular Biology, University of California, Davis, Davis, California 95616, USA.
Hee-Yeon Cho
Hideaki Yukawa
Masayuki Inui
Roy H Doi
University of California, Davis · USResearch Institute of Innovative Technology for the Earth · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cellulosomes and noncellulosomal (hemi)cellulolytic enzymes are produced by Clostridium cellulovorans to degrade plant cell walls. To understand their synergistic relationship, changes in mRNA and protein expression in cellulosomes and noncellulosomal (hemi)cellulolytic enzymes (hereafter called noncellulosomal enzymes) of cultures grown on cellobiose, cellulose, pectin, xylan, and corn fiber or mixtures thereof were examined. Cellulase expression, favored particularly by the presence of Avicel, was found with all substrates. Comparison of cellulosome and noncellulosomal enzymes showed that expression profiles were strongly affected by the carbon source. High xylanase or pectate lyase expression was observed when C. cellulovorans was grown on xylan or pectin, respectively. Mixed carbon substrates (cellulose-pectin-xylan mixture or corn fiber) induced a wider variety of enzymes than a single carbon source, such as cellobiose, pectin, or xylan. Cellulosomal proteome profiles were more affected by the carbon source than the noncellulosomal enzymes. Transcription and protein analyses revealed that cellulosomes and noncellulosomal enzymes were expressed simultaneously on mixed carbon sources, but their degree of inducibility varied when the substrate was either cellulose or cellobiose. Cellulosomes and noncellulosomal enzymes had synergistic activity on various carbon substrates. These results indicated that expression of plant cell wall-degrading enzymes is highly influenced by the available carbon source and that synergy between cellulosomes and noncellulosomal enzymes contribute to plant cell wall degradation.

Indexed as

Gene Expression Regulation, BacterialGene Expression Regulation, EnzymologicCellulaseCelluloseClostridiumMultienzyme ComplexesProtein SubunitsTranscription, GeneticCellulaseCellulosecellulosome, ClostridiumMultienzyme ComplexesProtein Subunits

Identifiers

PMID15205424
PMCPMC421611
OpenAlexW1967849171

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.