DhbE

• Description: 2,3-dihydroxybenzoate-AMP ligase (enterobactin synthetase component E)
  
  

Gene name	dhbE
Synonyms	entE
Essential	no
Product	2,3-dihydroxybenzoate-AMP ligase (enterobactin synthetase component E)
Function	biosynthesis of the siderophore bacillibactin
MW, pI	59 kDa, 5.684
Gene length, protein length	1617 bp, 539 aa
Immediate neighbours	dhbB, dhbC
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

acquisition of iron, iron metabolism

This gene is a member of the following regulons

AbrB regulon, Fur regulon

The gene

Basic information

• Locus tag: BSU31980

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: ATP-dependent AMP-binding enzyme family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:
  • cytoplasm (according to Swiss-Prot)

Database entries

• Structure: 1MDB (complex with DHB-adenylate), 1MDF

• UniProt: P40871

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: dhbA-dhbC-dhbE-dhbB-dhbF PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by iron starvation (Fur) PubMed

• Regulatory mechanism:
  • Fur: transcription repression PubMed
  • AbrB: transcription repression PubMed

• Additional information:
  • the amount of the mRNA is substantially decreased upon depletion of RNase Y PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Mohamed Marahiel, Marburg University, Germany homepage

References

Additional publications: PubMed

Lehnik-Habrink M, Schaffer M, Mäder U, Diethmaier C, Herzberg C, Stülke J  
RNA processing in Bacillus subtilis: identification of targets of the essential RNase Y. 
Mol Microbiol. 2011 81(6): 1459-1473. 
PubMed:21815947

Noel Baichoo, Tao Wang, Rick Ye, John D Helmann
Global analysis of the Bacillus subtilis Fur regulon and the iron starvation stimulon.
Mol Microbiol: 2002, 45(6);1613-29
[PubMed:12354229] [WorldCat.org] [DOI] (P p)

Jurgen J May, Nadine Kessler, Mohamed A Marahiel, Milton T Stubbs
Crystal structure of DhbE, an archetype for aryl acid activating domains of modular nonribosomal peptide synthetases.
Proc Natl Acad Sci U S A: 2002, 99(19);12120-5
[PubMed:12221282] [WorldCat.org] [DOI] (P p)

Tamara Hoffmann, Alexandra Schütz, Margot Brosius, Andrea Völker, Uwe Völker, Erhard Bremer
High-salinity-induced iron limitation in Bacillus subtilis.
J Bacteriol: 2002, 184(3);718-27
[PubMed:11790741] [WorldCat.org] [DOI] (P p)

J J May, T M Wendrich, M A Marahiel
The dhb operon of Bacillus subtilis encodes the biosynthetic template for the catecholic siderophore 2,3-dihydroxybenzoate-glycine-threonine trimeric ester bacillibactin.
J Biol Chem: 2001, 276(10);7209-17
[PubMed:11112781] [WorldCat.org] [DOI] (P p)

B M Rowland, T H Grossman, M S Osburne, H W Taber
Sequence and genetic organization of a Bacillus subtilis operon encoding 2,3-dihydroxybenzoate biosynthetic enzymes.
Gene: 1996, 178(1-2);119-23
[PubMed:8921902] [WorldCat.org] [DOI] (P p)

B M Rowland, H W Taber
Duplicate isochorismate synthase genes of Bacillus subtilis: regulation and involvement in the biosyntheses of menaquinone and 2,3-dihydroxybenzoate.
J Bacteriol: 1996, 178(3);854-61
[PubMed:8550523] [WorldCat.org] [DOI] (P p)