Molecular cloning and functional analysis of Photobacterium damselae subsp. piscicida haem receptor gene

A haem receptor gene from Photobacterium damselae subsp. piscicida (formerly known as Pasteurella piscicida) has been cloned, sequenced and analysed for its function. The gene, designated as pph, has an open reading frame consisting of 2154 bp, a predicted 718 amino acid residues and exists as a sin...

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Veröffentlicht in:Journal of fish diseases. - 1998. - 28(2005), 2 vom: 15. Feb., Seite 81-8
1. Verfasser: Naka, H (VerfasserIn)
Weitere Verfasser: Hirono, I, Aoki, T
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Journal of fish diseases
Schlagworte:Comparative Study Journal Article DNA Primers Receptors, Cell Surface heme receptor Iron E1UOL152H7
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245 1 0 |a Molecular cloning and functional analysis of Photobacterium damselae subsp. piscicida haem receptor gene 
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520 |a A haem receptor gene from Photobacterium damselae subsp. piscicida (formerly known as Pasteurella piscicida) has been cloned, sequenced and analysed for its function. The gene, designated as pph, has an open reading frame consisting of 2154 bp, a predicted 718 amino acid residues and exists as a single copy. It is homologous with the haem receptors of Vibrio anguillarum hupA, V. cholerae hutA, V. mimicus mhuA and V. vulnificus hupA at 32.7, 32.7, 45.6 and 30.9%, respectively, and is highly conserved, consisting of a Phe-Arg-Ala-Pro sequence (FRAP), an iron transport related molecule (TonB) and a Asn-Pron-Asn-Leu sequence (NPNL), binding motifs associated with haem receptors. As a single gene knockout mutant P. damselae subsp. piscicida was able to bind haem in the absence of pph, suggesting that other receptors may be involved in its iron transport system. This study shows that the P. damselae subsp. piscicida pph belongs to the haem receptor family, is conserved and that its iron-binding system may involve more than one receptor 
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