2BZB

NMR Solution Structure of a protein aspartic acid phosphate phosphatase from Bacillus Anthracis

Summary for 2BZB

• Entry DOI: 10.2210/pdb2bzb/pdb
• NMR Information: BMRB: 7350
• Descriptor: CONSERVED DOMAIN PROTEIN (1 entity in total)
• Functional Keywords: transferase, phosphatase, phosphorylation, sporulation, bacillus, anthracis, antithetical, negative, regulator, spine
• Biological source: BACILLUS ANTHRACIS
• Total number of polymer chains: 2
• Total formula weight: 15031.75

Authors

Grenha, R.,Rzechorzek, N.J.,Brannigan, J.A.,Ab, E.,Folkers, G.E.,De Jong, R.N.,Diercks, T.,Wilkinson, A.J.,Kaptein, R.,Wilson, K.S. (deposition date: 2005-08-14, release date: 2006-09-25, Last modification date: 2024-05-15)

Primary citation

Grenha, R.,Rzechorzek, N.J.,Brannigan, J.A.,de Jong, R.N.,Ab, E.,Diercks, T.,Truffault, V.,Ladds, J.C.,Fogg, M.J.,Bongiorni, C.,Perego, M.,Kaptein, R.,Wilson, K.S.,Folkers, G.E.,Wilkinson, A.J.
Structural characterization of Spo0E-like protein-aspartic acid phosphatases that regulate sporulation in bacilli.
J. Biol. Chem., 281:37993-38003, 2006

PubMed Abstract: Spore formation is an extreme response of many bacterial species to starvation. In the case of pathogenic species of Bacillus and Clostridium, it is also a component of disease transmission. Entry into the pathway of sporulation in Bacillus subtilis and its relatives is controlled by an expanded two-component system in which starvation signals lead to the activation of sensor kinases and phosphorylation of the master sporulation response regulator Spo0A. Accumulation of threshold concentrations of Spo0A approximately P heralds the commitment to sporulation. Countering the activities of the sensor kinases are phosphatases such as Spo0E, which dephosphorylate Spo0A approximately P and inhibit sporulation. Spo0E-like protein-aspartic acid-phosphate phosphatases, consisting of 50-90 residues, are conserved in sporeforming bacteria and unrelated in sequence to proteins of known structure. Here we determined the structures of the Spo0A approximately P phosphatases BA1655 and BA5174 from Bacillus anthracis using nuclear magnetic resonance spectroscopy. Each is composed of two anti-parallel alpha-helices flanked by flexible regions at the termini. The signature SQELD motif (SRDLD in BA1655) is situated in the middle of helix alpha2 with its polar residues projecting outward. BA5174 is a monomer, whereas BA1655 is a dimer. The four-helix bundle structure in the dimer is reminiscent of the phosphotransferase Spo0B and the chemotaxis phosphatase CheZ, although in contrast to these systems, the subunits in BA1655 are in head-to-tail rather than head-to-head apposition. The implications of the structures for interactions between the phosphatases and their substrate Spo0A approximately P are discussed.

PubMed: 17001075
DOI: 10.1074/jbc.M607617200

Experimental method

SOLUTION NMR