[Geminivirus replication: rolling circle mechanism in plants].

Area of Science:

• Plant virology
• Molecular biology
• Biochemistry

Context:

• Geminiviruses are widespread single-stranded DNA viruses infecting plants globally.
• Replication occurs via a rolling circle mechanism, producing substantial viral DNA.
• The viral Rep protein is crucial, possessing origin recognition, cleavage, primer synthesis, and helicase activities.

Purpose:

• To review recent advances in understanding the geminivirus Rep protein.
• Focus on demonstrated helicase activity and the N-terminal domain's tertiary structure.
• Relate these findings to the rolling circle replication mechanism.

Summary:

• The Rep protein's helicase activity and N-terminal domain structure are key to geminivirus replication.
• Rep interacts with host proteins to manipulate cell cycle control for viral advantage.
• Understanding these molecular details is vital for controlling geminivirus infections.

Impact:

• Provides insights into viral DNA replication strategies.
• Advances knowledge of virus-host interactions.
• Potential implications for developing antiviral strategies in plants.