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From EcoliWiki

psu may refer to more than one item in EcoliWiki. Possible meanings

• rho
• psu is also in the list of Genes not mapped to a genome sequence
• gene 14 from phage P4^[1]

Notes

The psu-1 allele was mapped to approx 1.3 minutes^[2], but was not assigned a location in the genome sequence.

References

1. ↑ Linderoth NA et al. (1997) In vivo and in vitro evidence for an anti-Rho activity induced by the phage P4 polarity suppressor protein Psu. Virology 227: 131-41 PubMed EcoliWiki page
2. ↑ Ephrati-Elizur E (1993) A mutation in a new gene of Escherichia coli, psu, requires secondary mutations for survival: psu mutants express a pleiotropic suppressor phenotype. J Bacteriol 175: 207-13 PubMed EcoliWiki page