Serine/threonine-protein kinase ppk15.

Cullin-4; Required, indirectly, for activation of ribonucleotide reductase through the degradation of the protein spd1, thereby supplying deoxyribonucleotides for DNA replication and repair. Also has a role as a scaffold for assembling ubiquitin ligases. Component of the rik1-associated E3 ubiquitin ligase complex that shows ubiquitin ligase activity and is required for histone H3K9 methylation. H3K9me represents a specific tag for epigenetic transcriptional repression by recruiting swi6/HP1 to methylated histones which leads to transcriptional silencing within centromeric heterochroma [...]

DNA damage-binding protein 1; Component of an E3 ubiquitin-protein ligase that includes cul4 (By similarity). Required for ubiquitination and the subsequent degradation of the DNA replication licensing factor cdt1 and of the ribonucleotide reductase inhibitor spd1. Also required for transcription-coupled nucleotide excision repair.

Chromatin modification-related protein rik1; Component of the rik1-associated E3 ubiquitin ligase complex that shows ubiquitin ligase activity and is required for histone H3K9 methylation. H3K9me represents a specific tag for epigenetic transcriptional repression by recruiting swi6/HP1 to methylated histones which leads to transcriptional silencing within centromeric heterochromatin, telomeric regions and at the silent mating-type loci. Rik1 has also a function in meiotic telomere clustering.

DYRK-family kinase pom1; Polarity factor involved in localization of polarized growth and cytokinesis. Forms an intracellular gradient that serves to measure cell length and control mitotic entry. Controls the timing of mitotic commitment by regulating the inhibitory impact of cdr1/cdr2 on wee1 activity. Directly phosphorylates the tail of cdr2 which inhibits cdr2 activation by ssp1. Cdr2 phosphorylation by pom1 also modulates cdr2 association with membranes and inhibits cdr2 interaction with mid1, reducing its clustering ability, possibly via the down-regulation of cdr2 kinase activit [...]

Serine/threonine-protein kinase ppk5; Has a role in meiosis; Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. MNB/DYRK subfamily.

Cell division cycle protein cdt2; Substrate-specific adapter of a DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complex required for DNA replication during mitosis and meiosis. The DCX(DTL) complex, also named CRL4(CDT2) complex, mediates the polyubiquitination and subsequent degradation of cdt1 and spd1. Involved in the regulation of mitotic and pre-meiotic S- phase progression.

WD repeat protein iqw1; Ligand-dependent coactivator of nuclear receptors that may function as a substrate receptor for CUL4-DDB1 E3 ubiquitin-protein ligase complex.

DNA excision repair protein ckn1; Adapter protein for ddb1/cullin 4 ubiquitin ligases involved in transcription-coupled nucleotide excision repair.