James Umen

The paper characterizes two CENH3 paralogs in Chlamydomonas reinhardtii, showing their essential function and association with ZeppL-LINE1 elements in centromeres.

This study identifies VSR1, a conserved RWP-RK transcription factor, as a key regulator of gametic differentiation in volvocine algae, revealing a mechanism involving homodimers and heterodimers with MID.

The paper identifies cell-type specific alternative transcripts in Volvox carteri and explores their evolutionary origins and potential regulatory mechanisms.

This study uses ChIP-Seq to profile H3K4 methylation across the Chlamydomonas cell cycle, revealing distinct patterns of mono- and trimethylation at gene promoters and their relationship to gene expression.