Bacterial ‘histone‐like protein I’ (HLP‐I) is an outer membrane constituent?

Abstract
The nucleoid‐associated ‘histone‐like protein I’ (HLP‐I) protein of E. coli was found to be homologous with the cationic 16‐kDa outer membrane protein OmpH of Salmonella typhimurium. Deduced from the nucleotide sequence, the HLP‐I protein has 91% identical residues with the OmpH protein. Both proteins have very similar cleavable signal sequences. The nucleotide sequence similarity between the corresponding genes hlpA and ompH is 87%. The ompH gene is located in a gene cluster resembling the hlpA‐ORF17 region of E. coli which is close to the Ipx genes involved in the biosynthesis of lipopolysaccharides. The localization of the OmpH/HLP‐I protein in the cell is discussed.

This publication has 19 references indexed in Scilit: