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Default The solution structure of the histidine-containing protein (HPr) from Staphylococcus

The solution structure of the histidine-containing protein (HPr) from Staphylococcus aureus as determined by two-dimensional 1H-NMR spectroscopy.

Related Articles The solution structure of the histidine-containing protein (HPr) from Staphylococcus aureus as determined by two-dimensional 1H-NMR spectroscopy.

Eur J Biochem. 1993 Aug 15;216(1):205-14

Authors: Kalbitzer HR, Hengstenberg W

The three-dimensional solution structure of the heat-stable phosphocarrier protein HPr from Staphylococcus aureus was determined from two-dimensional NMR data by restrained molecular dynamics. It consists of a large twisted antiparallel beta-pleated sheet with four strands A, B, C, and D of amino acids 2-7, 34-37, 40-42 and 60-65. Three right-handed helices A, B, C (amino acids 18-27, 47-53 and 71-85) are positioned on top of this sheet. The aromatic ring of His15 is located in a cleft formed by amino acids 12-17 and 55-58, only the nitrogen (N delta 1) atom which can be phosphorylated by enzyme I is exposed to the water. The side chains of Thr12 and Arg17 are located close to the histidine ring. The regulatory serine residue (Ser46) is located in a hydrophobic patch, its hydroxyl group is water-accessible but forms hydrogen bonds with the amide groups of the backbone. The general features of the three-dimensional structure are similar to those found in HPr proteins from different microorganisms such as Escherichia coli, Bacillus subtilis and Streptococcus faecalis.

PMID: 8365407 [PubMed - indexed for MEDLINE]



Source: PubMed
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