GenePage for the chiP gene of Escherichia coli K-12

Primary Gene Name: chiP
EcoGene Accession Number: EG13659
K-12 Gene Accession Number: ECK0669
MG1655 Gene Identifier: b0681
Gene Name Mnemonic: Chitin
Alternate Gene Symbols: ybfM
Description: Chitoporin, uptake of chitosugars; repressed by chiX(micM) sRNA
  # bp Upstream # bp Downstream
MW: 52780.32 ---------468 aa Pre-Run BlastP UniProt
Pre-Run BlastP NR+Env
Left End: 708334
Left Intergenic Region

Name: glnS_chiP

Length: 576 bp gap

Orientation: Codirectional+

Left_end: 707758

Right_end: 708333

Centisome: 15.25

Genomic Address
Clockwise
Minute or Centisome (%) = 15.26
Right End: 709740
Right Intergenic Region

Name: chiP_chiQ

Length: 49 bp gap

Orientation: Codirectional+

Left_end: 709741

Right_end: 709789

Centisome: 15.29

chiPQ(ybfMN) mRNA is regulated by ChiX(MicM) (Rasmussen, 2009). ChiX(MicM) sRNA is degraded after chb operon mRNA induction by chitobiose or chitotriose, mediated by a chiX(micM) antisense RNA in the chbBC intergenic region (Overgaard, 2009). ChiP(YbfM) has been characterized in Salmonella as a porin required for uptake of chitin-derived oligosaccharides regulated by the ChiX(MicM) sRNA (Figueroa-Bossi, 2009). ChiP(YbfM) is related to the PorD porin of P. aeruginosa. The first 32 aa of ChiP(YbfM) are a probable signal peptide. chiP(ybfM) and uidC are paralogs. ChiP is also the name of an OmpC-related chitoporin in Vibrio sp., so ChiP(YbfM) was named ChiP-III and was predicted to be a porin for chitobiose in Salmonella and E. coli (Yang, 2006).

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BamHI EcoRI HindIII