Evidence map›Paper›PMID 17351098›Full record

ArticleApplied and environmental microbiology2007

The dasABC gene cluster, adjacent to dasR, encodes a novel ABC transporter for the uptake of N,N'-diacetylchitobiose in Streptomyces coelicolor A3(2).

Akihiro Saito, Tomonori Shinya, Katsushiro Miyamoto, Tomofumi Yokoyama, Hanae Kaku, Eiichi Minami, Naoto Shibuya, Hiroshi Tsujibo, Yoshiho Nagata, Akikazu Ando and 2 more

Abstract readComparative Study
In one paragraph

Article in Applied and environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
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

20 citing papers in PubMed.

  1. Trial
  2. Lon protease reprograms cellular physiology ofFrontiers in microbiology · 2026
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  3. Article
  4. Frontiers in microbiology · 2025
    Article
  5. Genomic Exploration of a ChitinolyticCurrent issues in molecular biology · 2024
    Article
  6. Article
  7. Article
  8. Article
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  10. Article
  11. NgcEMicrobes and environments · 2018
    Article
  12. Review
  13. Taxonomy, Physiology, and Natural Products of Actinobacteria.Microbiology and molecular biology reviews : MMBR · 2016
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

12 authors.

Akihiro SaitoDepartment of Bioresources Chemistry, Faculty of Horticulture, Chiba University, Matsudo 648, Matsudo City, Chiba 271-8510, Japan. takosaito@faculty.chiba-u.jp
Tomonori Shinya
Katsushiro Miyamoto
Tomofumi Yokoyama
Hanae Kaku
Eiichi Minami
Naoto Shibuya
Hiroshi Tsujibo
Yoshiho Nagata
Akikazu Ando
Takeshi Fujii
Kiyotaka Miyashita

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

N,N'-Diacetylchitobiose [(GlcNAc)(2)] induces the transcription of chitinase (chi) genes in Streptomyces coelicolor A3(2). Physiological studies showed that (GlcNAc)(2) addition triggered chi expression and increased the rate of (GlcNAc)(2) concentration decline in culture supernatants of mycelia already cultivated with (GlcNAc)(2), suggesting that (GlcNAc)(2) induced the synthesis of its own uptake system. Four open reading frames (SCO0531, SCO0914, SCO2946, and SCO5232) encoding putative sugar-binding proteins of ABC transporters were found in the genome by probing the 12-bp repeat sequence required for regulation of chi transcription. SCO5232, named dasA, showed transcriptional induction by (GlcNAc)(2) and N,N',N'''-triacetylchitotriose [(GlcNAc)(3)]. Surface plasmon resonance analysis showed that recombinant DasA protein exhibited the highest affinity for (GlcNAc)(2) (equilibrium dissociation constant [K(D)] = 3.22 x 10(-8)). In the dasA-null mutant, the rate of decline of the (GlcNAc)(2) concentration in the culture supernatant was about 25% of that in strain M145. The in vitro and in vivo data clearly demonstrated that dasA is involved in (GlcNAc)(2) uptake. Upstream and downstream of dasA, the transcriptional regulator gene (dasR) and two putative integral membrane protein genes (dasBC) are located in the opposite and same orientations, respectively. The expression of dasR and dasB, which seemed independent of dasA transcription, was also induced by (GlcNAc)(2) and (GlcNAc)(3).

Indexed as

Amino Acid SequenceATP-Binding Cassette TransportersBase SequenceChitinasesCulture MediaDisaccharidesGene Expression Regulation, BacterialGenetic VectorsImmunoblottingMolecular Sequence DataMultigene FamilyOpen Reading FramesReverse Transcriptase Polymerase Chain ReactionSequence Analysis, DNAStreptomyces coelicolorSurface Plasmon ResonanceATP-Binding Cassette TransportersChitinasesCulture MediaDisaccharidesN,N-diacetylchitobiose

Identifiers

PMID17351098
PMCPMC1892892

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.