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Reference - PMID:9552380 - Regulation of G1 progression in fission yeast by the rum1+ gene product.

Reference summary

PubMed ID
PMID:9552380
Title
Regulation of G1 progression in fission yeast by the rum1+ gene product.
Authors
Martín-Castellanos C, Moreno S
Citation
Prog Cell Cycle Res 1996;2:29-35
Publication year
1996
Abstract
Recently it has been found that B-type cyclins in fission yeast regulate the activation of the cdc2 kinase to promote the onset of both DNA replication and mitosis. cig2 is the major G1 cyclin while cdc13 is the principal mitotic cyclin. cdc13 also has an additional function in G2 phase, preventing more than one round of DNA replication per cell cycle. In opposition to these cyclins the rum1 inhibitor, a protein present exclusively in G1, prevents premature activation of the cdc2/cig2 and the cdc2/cdc13 complexes until cells have reached the critical cell size required to pass Start and initiate a new cell cycle.

Annotation

GO biological process

GO:0031568 - mitotic G1 cell size control checkpoint signaling

Genes:

GO:0007089 - traversing start control point of mitotic cell cycle

Genes:

GO cellular component

GO:0000307 - cyclin-dependent protein kinase holoenzyme complex

Genes:

GO molecular function

GO:0061575 - cyclin-dependent protein serine/threonine kinase activator activity

Genes:

GO:0004861 - cyclin-dependent protein serine/threonine kinase inhibitor activity

Genes:

Single locus phenotype

FYPO:0003436 - decreased protein kinase activity during mitotic G2 phase

Genes:

Genotypes:

FYPO:0001974 - increased number of cells with 1C DNA content

Genes:

Genotypes:

FYPO:0003246 - normal mitotic S phase progression

Genes:

Genotypes: