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Involved in sporulation (PubMed:16484182, PubMed:22355671). May coordinate the cessation of aerial hyphae growth and subsequent chromosome segregation and/or septation (PubMed:16484182, PubMed:22355671). Required for expression of the ParB partioning protein during sporogenesis. Activates its own transcription and represses WhiB (PubMed:16484182). Binds with low affinity to its own promoter and to the Parp2 sporulation-specific promoter. 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