PUL ID

PUL0238

PubMed

18177310, FEMS Microbiol Lett. 2008 Feb;279(1):103-9. doi: 10.1111/j.1574-6968.2007.01018.x.

Characterization method

Northern Blot

Genomic accession number

NC_000964.3

Nucelotide position range

626622-633862

Substrate

glucomannan

Loci

gmuBACDREFG

Species

Bacillus subtilis/1423

Degradation or Biosynthesis

degradation

Cluster number

1

Gene name

Gene position

Gene type

Found by CGCFinder?

gmuB 1 - 312 (+) TC: gnl|TC-DB|Q9KSH5|4.A.3.2.6 Yes
gmuA 312 - 644 (+) TC: gnl|TC-DB|Q72XQ1|4.A.3.2.8 Yes
gmuC 663 - 1991 (+) TC: gnl|TC-DB|Q72XQ0|4.A.3.2.8 Yes
gmuD 2009 - 3406 (+) TC: gnl|TC-DB|Q86Z14|8.A.49.1.2 Yes
gmuR 3549 - 4262 (+) TF: DBD-Pfam|GntR,DBD-SUPERFAMILY|0037767 Yes
gmuE 4291 - 5190 (+) other Yes
gmuF 5187 - 6134 (+) other Yes
gmuG 6153 - 7241 (+) CAZyme: GH26 Yes

PUL ID

PUL0238

PubMed

18177310, FEMS Microbiol Lett. 2008 Feb;279(1):103-9. doi: 10.1111/j.1574-6968.2007.01018.x.

Title

Glucomannan utilization operon of Bacillus subtilis.

Author

Sadaie Y, Nakadate H, Fukui R, Yee LM, Asai K

Abstract

This study characterizes the glucomannan utilization operon (gmuBACDREFG, formerly ydhMNOPQRST) of Bacillus subtilis. Transcription of the operon is induced by konjac glucomannan and requires the last mannanase gene (gmuG). Cellobiose and mannobiose, possible degradation products of glucomannan by GmuG, are strong inducers of transcription. It is shown that an internal regulator gene (gmuR) encodes a repressor of the operon, as disruption of this gene enhances transcription of the operon in the absence of inducers. The expression of the glucomannan utilizing operon of B. subtilis is thus induced by degraded glucomannan products, and repressed by an internal repressor.