Pseudomonas aeruginosa PAO1, PA2000 (dchB)

Cytoplasmic Membrane
Outer Membrane
View in JBrowse View in GBrowse PseudoCyc / Metabolic Pathways

Gene Feature Overview

Strain Pseudomonas aeruginosa PAO1 (Reference)
Locus Tag
Synonym: dhcB
Synonym: atoA
Synonym: scoB
Replicon chromosome
Genomic location 2186260 - 2186916 (+ strand)
Transposon Mutants in orthologs 2 transposon mutants in orthologs
CommentDeletion of dhcB or transposon insertions into the coding sequence result in a strain unable to grow using L-carnitine as a sole carbon source. DhcB is predicted to form a complex with DhcA which functions to deacetylate 3-dehydrocarnitine generating acetyl-CoA and glycine betaine CoA. Deletion of the dhcAB operon results in complete loss of carnitine-dependent CoA utilization from cytoplasmic extracts compared to cytoplasm from wild-type cells.;Transcription of the dhcAB operon is regulated by the transcription factor DhcR.


RefSeq NP_250690.1
GI 15597196
Affymetrix PA2000_at
DNASU PaCD00006895
Entrez 878555
GenBank AAG05388.1
INSDC AAG05388.1
NCBI Locus Tag PA2000
protein_id(GenBank) gb|AAG05388.1|AE004626_7|gnl|PseudoCAP|PA2000
UniParc UPI00000C554F
UniProtKB Acc Q9I2A9
UniRef100 UniRef100_Q9I2A9
UniRef50 UniRef50_Q9I2A9
UniRef90 UniRef90_Q9I2A9


Feature Type CDS
Coding Frame 1
Product Name
dehydrocarnitine CoA transferase, DchB
Product Name Confidence: Class 1
Synonyms DhcB, dehydrocarnitine CoA transferase, subunit B
Evidence for Translation
Identified using nanoflow high-pressure liquid chromatography (HPLC) in conjunction with microelectrospray ionization on LTQ XL mass spectrometer (PMID:24291602).
Charge (pH 7) -8.37
Kyte-Doolittle Hydrophobicity Value 0.243
Molecular Weight (kDa) 23.2
Isoelectric Point (pI) 4.57

Subcellular localization

Individual Mappings
Localization Confidence PMID
Cytoplasmic Class 3
Additional evidence for subcellular localization

Pathogen Association Analysis

Found in both pathogen and nonpathogenic strains
Hits to this gene were found in 271 genera

Orthologs/Comparative Genomics

Pseudomonas Ortholog Database View orthologs at Pseudomonas Ortholog Database
Pseudomonas Ortholog Group POG003435 (552 members)
Putative Inparalogs None Found


STRING database Search for predicted protein-protein interactions using:
Search term: PA2000
Search term: dchB

Human Homologs

Ensembl 86, assembly GRCh38.p7
3-oxoacid CoA-transferase 1 [Source:HGNC Symbol;Acc:HGNC:8527]
E-value: 1.9e-54
Percent Identity: 51.7


Identification of glutamate 344 as the catalytic residue in the active site of pig heart CoA transferase.
Rochet JC, Bridger WA
Protein Sci. 1994 Jun;3(6):975-81
PubMed ID: 7915164
Molecular characterization of lysR-lysXE, gcdR-gcdHG and amaR-amaAB operons for lysine export and catabolism: a comprehensive lysine catabolic network in Pseudomonas aeruginosa PAO1.
Madhuri Indurthi S, Chou HT, Lu CD
Microbiology (Reading, Engl.) 2016 May;162(5):876-88
PubMed ID: 26967762