BCK1/YJL095W Summary Help

Standard Name BCK1
Systematic Name YJL095W
Alias LAS3 , SAP3 , SLK1 , SSP31
Feature Type ORF, Verified
Description Mitogen-activated protein (MAP) kinase kinase kinase acting in the protein kinase C signaling pathway, which controls cell integrity; upon activation by Pkc1p phosphorylates downstream kinases Mkk1p and Mkk2p (1 and see Summary Paragraph)
Name Description Bypass of C Kinase
Chromosomal Location
ChrX:247255 to 251691 | ORF Map | GBrowse
Gbrowse
Genetic position: -64 cM
Gene Ontology Annotations All BCK1 GO evidence and references
  View Computational GO annotations for BCK1
Molecular Function
Manually curated
High-throughput
Biological Process
Manually curated
High-throughput
Cellular Component
High-throughput
Regulatory Role
Regulatory modules predicted: stressResponse (355)
Mutant phenotypes All BCK1 Phenotype evidence and references
Classical genetics
null
overexpression
Large-scale survey
null
overexpression
Resources
interactions All BCK1 Interaction evidence and references
820 total interaction(s) for 550 unique genes/features.
Physical Interactions
  • Affinity Capture-MS: 69
  • Affinity Capture-RNA: 2
  • Affinity Capture-Western: 2
  • Biochemical Activity: 70
  • PCA: 11
  • Protein-peptide: 4
  • Reconstituted Complex: 5
  • Two-hybrid: 7
Genetic Interactions
  • Dosage Growth Defect: 107
  • Dosage Rescue: 23
  • Negative Genetic: 358
  • Phenotypic Enhancement: 2
  • Phenotypic Suppression: 4
  • Positive Genetic: 42
  • Synthetic Growth Defect: 25
  • Synthetic Lethality: 70
  • Synthetic Rescue: 19
Resources
Expression Summary
histogram
Resources
Protein Information All BCK1 Protein evidence and references
Localization
Phosphorylation PhosphoGRID | PhosphoPep Database
Structure
Homologs
sequence information
ChrX:247255 to 251691 | ORF Map | GBrowse
SGD ORF map
Genetic position: -64 cM
Last Update Coordinates: 2011-02-03 | Sequence: 1996-07-31
Subfeature details
Relative
Coordinates		 Chromosomal
Coordinates		 Most Recent Updates
Coordinates Sequence
CDS 1..4437 247255..251691 2011-02-03 1996-07-31
Retrieve sequences
Analyze Sequence
S288C only
S288C vs. other species
S288C vs. other strains
Resources
External Links All Associated Seq | E.C. | Entrez Gene | Entrez RefSeq Protein | MIPS | Search all NCBI (Entrez) | UniProtKB
Primary SGDIDS000003631
SUMMARY PARAGRAPH for BCK1

The Pkc1p kinase controls a highly-conserved cell wall integrity signalling pathway that regulates functions essential for growth and the integrity of proliferating cells (2, 3, 4). This pathway consists of a cascade of phosphorylation reactions initiated with the activation of Pkc1p (5, 6). Pkc1p then activates a basic three-protein kinase module involving an integration of the MEK-kinase Bck1p (7, 8), the redundant MEK-kinases Mkk1p and Mkk2p (9), and the MAP kinase Slt2p (10, 2). Strains disrupted for any of these protein kinases lose osmotic stability, especially at 37 C, such that the cells are viable only in the presence of sorbitol (or some other osmotic stabilizer), suggesting that the lysis is due to lack of cell wall integrity (4, 11).

Last updated: 2005-03-22

References cited on this page View Complete Literature Guide for BCK1
1) Heinisch JJ, et al.  (1999) The protein kinase C-mediated MAP kinase pathway involved in the maintenance of cellular integrity in Saccharomyces cerevisiae. Mol Microbiol 32(4):671-80
2) Lee KS, et al.  (1993) A yeast mitogen-activated protein kinase homolog (Mpk1p) mediates signalling by protein kinase C. Mol Cell Biol 13(5):3067-75
3) Sussman A, et al.  (2004) Discovery of cercosporamide, a known antifungal natural product, as a selective Pkc1 kinase inhibitor through high-throughput screening. Eukaryot Cell 3(4):932-43
4) Martin H, et al.  (1996) Molecular and functional characterization of a mutant allele of the mitogen-activated protein-kinase gene SLT2(MPK1) rescued from yeast autolytic mutants. Curr Genet 29(6):516-22
5) Levin DE, et al.  (1990) A candidate protein kinase C gene, PKC1, is required for the S. cerevisiae cell cycle. Cell 62(2):213-24
6) Paravicini G, et al.  (1992) The osmotic integrity of the yeast cell requires a functional PKC1 gene product. Mol Cell Biol 12(11):4896-905
7) Costigan C, et al.  (1994) NHP6A and NHP6B, which encode HMG1-like proteins, are candidates for downstream components of the yeast SLT2 mitogen-activated protein kinase pathway. Mol Cell Biol 14(4):2391-403
8) Lee KS and Levin DE  (1992) Dominant mutations in a gene encoding a putative protein kinase (BCK1) bypass the requirement for a Saccharomyces cerevisiae protein kinase C homolog. Mol Cell Biol 12(1):172-82
9) Irie K, et al.  (1993) MKK1 and MKK2, which encode Saccharomyces cerevisiae mitogen-activated protein kinase-kinase homologs, function in the pathway mediated by protein kinase C. Mol Cell Biol 13(5):3076-83
10) Torres L, et al.  (1991) A protein kinase gene complements the lytic phenotype of Saccharomyces cerevisiae lyt2 mutants. Mol Microbiol 5(11):2845-54
11) Cid VJ, et al.  (1995) Molecular basis of cell integrity and morphogenesis in Saccharomyces cerevisiae. Microbiol Rev 59(3):345-86