CLB3/YDL155W Summary Help

CLB3 BASIC INFORMATION

Standard Name CLB3 1, 2
Systematic Name YDL155W
Feature Type ORF, Verified
Description B-type cyclin involved in cell cycle progression; activates Cdc28p to promote the G2/M transition; may be involved in DNA replication and spindle assembly; accumulates during S phase and G2, then targeted for ubiquitin-mediated degradation (1, 2, 3, 4 and see Summary Paragraph)
Name Description CycLin B 1
GO Annotations All CLB3 GO evidence and references
    View Computational GO annotations for CLB3
Molecular Function
Manually curated
Biological Process
Manually curated
Cellular Component
Manually curated
High-throughput
Mutant Phenotype All CLB3 Phenotype details and references
Classical genetics
null
overexpression
Large-scale survey
null
overexpression
Interactions CLB3 All interactions details and references
83 total interaction(s) for 50 unique genes/features.
Physical Interactions
  • Affinity Capture-MS: 26
  • Affinity Capture-RNA: 1
  • Affinity Capture-Western: 9
  • Biochemical Activity: 1
  • Reconstituted Complex: 1
  • Two-hybrid: 3
Genetic Interactions
  • Dosage Lethality: 2
  • Dosage Rescue: 1
  • Phenotypic Enhancement: 23
  • Phenotypic Suppression: 2
  • Synthetic Growth Defect: 1
  • Synthetic Lethality: 13
Sequence Information
ChrIV:176774 to 178057 | ORF Map | GBrowse
Gbrowse
Last Update Coordinates: 1996-07-31 | Sequence: 1996-07-31
Subfeature details
Relative
Coordinates		 Chromosomal
Coordinates		 Most Recent Updates
Coordinates Sequence
CDS 1..1284 176774..178057 1996-07-31 1996-07-31
External Links All Associated Seq | Entrez Gene | Entrez RefSeq Protein | MIPS | UniProtKB
Primary SGDIDS000002314

CLB3 RESOURCES

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Expression Summary histogram

ADDITIONAL INFORMATION for CLB3

SUMMARY PARAGRAPH for CLB3

CLB3 encodes a B-type cyclin that activates Cdc28p to promote the transition from G2 to M phase of the cell cycle. Progression through the cell cycle is a carefully regulated process that is conserved throughout eukaryotes. Periodic activation of cyclin-dependent kinases (CDKs) are required for this process; the critical CDK involved in cell cycle progression in yeast is Cdc28p (5). Cyclins are the regulatory subunits that activate CDKs at the appropriate time in the cell cycle; they were first identified in sea urchins and named for their cyclical accumulation during particular phases of the cell cycle (6). CLN1, CLN2, and CLN3 encode the yeast G1 cyclins while there are 6 B-type cyclins (CLB) genes involved in activation of S, G2, and M phases of the cell cycle (5). With the exception of CLN3, there are pairs of homologous cyclin genes that share common functions (5, 7). Genetic interactions have shown that CLB3 and CLB4 may both be involved in DNA replication and spindle assembly as well as the G2/M-phase transition(3). CLB3 and CLB4 transcripts accumulate during S phase and G2 (3). Like the other Clb proteins, Clb3p and Clb4p contain a destruction box motif in their amino termini, which may target them for ubiquitin-mediated degradation by the proteasome (5). It was inititally proposed that the Clb proteins play a role in the degradation of the G1 cyclins (8), but it was later shown that G1 cyclins are unstable in G1 phase, and Clb activity is not required for their degradation (9). There are excellent reviews by Lew et al.(5) and Mendenhall and Hodge (4) that describe cell cycle control in S. cerevisiae in detail.

Last updated: 2000-04-04

REFERENCES CITED ON THIS PAGE [View Complete Literature Guide for CLB3]

1) Surana U, et al.  (1991) The role of CDC28 and cyclins during mitosis in the budding yeast S. cerevisiae. Cell 65(1):145-61
2) Fitch I, et al.  (1992) Characterization of four B-type cyclin genes of the budding yeast Saccharomyces cerevisiae. Mol Biol Cell 3(7):805-18
3) Richardson H, et al.  (1992) Cyclin-B homologs in Saccharomyces cerevisiae function in S phase and in G2. Genes Dev 6(11):2021-34
4) Mendenhall MD and Hodge AE  (1998) Regulation of Cdc28 cyclin-dependent protein kinase activity during the cell cycle of the yeast Saccharomyces cerevisiae. Microbiol Mol Biol Rev 62(4):1191-243
5) Lew DJ, et al.  (1997) "Cell cycle control in Saccharomyces cerevisiae." Pp. 607-695 in The Molecular and Cellular Biology of the Yeast Saccharomyces: Cell Cycle and Cell Biology, edited by Pringle JR, Broach JR and Jones EW. Cold Spring Harbor, NY: Cold Spring Harbor Laboratory Press
6) Evans T, et al.  (1983) Cyclin: a protein specified by maternal mRNA in sea urchin eggs that is destroyed at each cleavage division. Cell 33(2):389-96
7) Kuntzel H, et al.  (1996) Cell cycle control and initiation of DNA replication in Saccharomyces cerevisiae. Biol Chem 377(7-8):481-7
8) Blondel M and Mann C  (1996) G2 cyclins are required for the degradation of G1 cyclins in yeast. Nature 384(6606):279-82
9) Schneider BL, et al.  (1998) Yeast G1 cyclins are unstable in G1 phase. Nature 395(6697):86-9