--- assembly_name: R64-1-1 biotype: protein_coding canonical_transcript: YMR199W_mRNA. db_type: core description: G1 cyclin involved in regulation of the cell cycle; activates Cdc28p kinase to promote the G1 to S phase transition; late G1 specific expression depends on transcription factor complexes, MBF (Swi6p-Mbp1p) and SBF (Swi6p-Swi4p); CLN1 has a paralog, CLN2, that arose from the whole genome duplication; cell cycle arrest phenotype of the cln1 cln2 cln3 triple null mutant is complemented by any of human cyclins CCNA2, CCNB1, CCNC, CCND1, or CCNE1 [Source:SGD;Acc:S000004812] display_name: CLN1 end: 664284 id: YMR199W logic_name: sgd object_type: Gene seq_region_name: XIII source: sgd species: saccharomyces_cerevisiae start: 662644 strand: 1