Crystal structure of the GDP-bound GTPase Era from Staphylococcus aureus

Area of Science:

• Biochemistry
• Structural Biology
• Microbiology

Background:

• Staphylococcus aureus is a pathogenic bacterium.
• GTPase Era is crucial for 30S ribosome subunit maturation in S. aureus.
• The functions of Era are not fully understood.

Purpose of the Study:

• To determine the crystal structure of S. aureus Era in complex with GDP.
• To analyze the structural orientation of Era's domains.
• To provide a basis for inhibitor development.

Main Methods:

• X-ray crystallography at 2.76 Å resolution.
• Structural comparison of GDP-bound Era with homologous proteins.

Main Results:

• The crystal structure of GDP-bound S. aureus Era was determined.
• A novel mutual orientation between the GTPase and KH domains was observed.
• This orientation differs from previously described homologous proteins.

Conclusions:

• The determined structure provides insights into Era's conformation.
• Understanding Era's structure is key to elucidating its regulatory interactions.
• This structural information can guide the development of specific inhibitors against S. aureus.