PMID:1956303

Citation	Nieto, JM, Carmona, M, Bolland, S, Jubete, Y, de la Cruz, F and Juárez, A (1991) The hha gene modulates haemolysin expression in Escherichia coli. Mol. Microbiol. 5:1285-93
Abstract	A mutation in the hha allele results in a large increase in the production of intracellular as well as extracellular haemolysin in Escherichia coli cells harbouring the haemolytic recombinant plasmid pANN202-312. This single gene mutation was located between 490 and 491.6 kb on the physical map of the E. coli chromosome. From the DNA sequence of hha a small polypeptide of 8629 Da was predicted and was expressed in minicells. The deduced polypeptide sequence did not show significant similarities to other characterized proteins related to the regulation of gene expression in E. coli, although it was shown that the hha mutation increases cytoplasmic synthesis of haemolysin.
Links	PubMed
Keywords	Amino Acid Sequence; Bacterial Proteins/biosynthesis; Bacterial Proteins/genetics; Bacterial Toxins/biosynthesis; Bacterial Toxins/genetics; Base Sequence; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins; Gene Expression Regulation, Bacterial; Genes, Bacterial; Hemolysin Proteins/biosynthesis; Hemolysin Proteins/genetics; Molecular Sequence Data; Open Reading Frames; Plasmids; Protein Processing, Post-Translational; Recombinant Fusion Proteins/metabolism; Regulatory Sequences, Nucleic Acid; Sequence Homology, Nucleic Acid; Transcription, Genetic
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