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protein coding gene - spc7 (SPCC1020.02) - outer kinetochore KNL network protein, KNL-1 family member, blinkin, Spc7

Gene summary

Standard name
spc7
Systematic ID
SPCC1020.02
Product
outer kinetochore KNL network protein, KNL-1 family member, blinkin, Spc7
Organism
Schizosaccharomyces pombe (fission yeast)
UniProt ID
O59757
ORFeome ID
30/30F05
Characterisation status
biological role published
Feature type
mRNA gene
Genomic location
chromosome III: 786289..790660 reverse strand

Annotation

Disease association

MONDO:0011437 - microcephaly 4, primary, autosomal recessive

References:

GO biological process

GO:0051315 - attachment of mitotic spindle microtubules to kinetochore

References:

GO:1902426 - deactivation of mitotic spindle assembly checkpoint

References:

GO:1905318 - meiosis I spindle assembly checkpoint signaling

References:

GO:1990813 - meiotic centromeric cohesion protection in anaphase I

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GO:1990758 - mitotic sister chromatid biorientation

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GO:0007094 - mitotic spindle assembly checkpoint signaling

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GO cellular component

GO:0000779 - condensed chromosome, centromeric region

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GO:0000776 - kinetochore

References:

GO:0180019 - Knl1/Spc105 complex

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GO:0000940 - outer kinetochore

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GO molecular function

GO:0140483 - kinetochore adaptor activity

References:

GO:0051010 - microtubule plus-end binding

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GO:0005515 - protein binding

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GO:0035591 - signaling adaptor activity

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Modification

MOD:00046 - O-phospho-L-serine

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MOD:00047 - O-phospho-L-threonine

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MOD:00696 - phosphorylated residue

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MOD:01149 - sumoylated lysine

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Multi-locus phenotype

FYPO:0000141 - abnormal mitotic sister chromatid segregation

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Genotypes:

FYPO:0007174 - abnormal protein localization to kinetochore during mitotic interphase

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Genotypes:

FYPO:0004318 - abolished mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0008166 - abolished protein localization to kinetochore during mitotic prometaphase

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Genotypes:

FYPO:0000941 - abolished protein localization to mitotic spindle pole body

References:

Genotypes:

FYPO:0007437 - constitutive activation of mitotic spindle assembly checkpoint

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Genotypes:

FYPO:0005781 - decreased duration of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0001645 - decreased protein-protein interaction

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Genotypes:

FYPO:0005780 - decreased response to mitotic spindle assembly checkpoint signaling

References:

Genotypes:

FYPO:0001355 - decreased vegetative cell population growth

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Genotypes:

FYPO:0002638 - increased activation of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0000964 - normal growth on thiabendazole

References:

Genotypes:

FYPO:0001839 - normal minichromosome loss

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Genotypes:

FYPO:0004214 - normal protein localization to kinetochore during meiosis I

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Genotypes:

FYPO:0007399 - normal protein localization to kinetochore during mitotic interphase

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Genotypes:

FYPO:0000703 - normal protein-protein interaction

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Genotypes:

FYPO:0001357 - normal vegetative cell population growth

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Genotypes:

FYPO:0007438 - premature activation of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0000091 - sensitive to thiabendazole

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Genotypes:

FYPO:0005633 - sister kinetochore dissociation in meiotic metaphase I, normal chromosome segregation in meiosis I, and sister chromatid non-disjunction in meiosis II

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Genotypes:

FYPO:0002060 - viable vegetative cell population

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Genotypes:

Quantitative gene expression

PBO:0006310 - protein level

References:

PBO:0011963 - RNA level

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Single locus phenotype

FYPO:0000059 - abnormal mitotic cell cycle

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Genotypes:

FYPO:0000326 - abnormal mitotic sister chromatid biorientation

References:

Genotypes:

FYPO:0000141 - abnormal mitotic sister chromatid segregation

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Genotypes:

FYPO:0000338 - abnormal mitotic spindle

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Genotypes:

FYPO:0000168 - abnormal mitotic spindle assembly checkpoint

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Genotypes:

FYPO:0003591 - abnormal protein complex binding

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Genotypes:

FYPO:0007174 - abnormal protein localization to kinetochore during mitotic interphase

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Genotypes:

FYPO:0001268 - abnormal protein localization to kinetochore during vegetative growth

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Genotypes:

FYPO:0001946 - abolished mitotic sister chromatid separation

References:

Genotypes:

FYPO:0004318 - abolished mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0004763 - abolished protein localization to kinetochore during meiosis I

References:

Genotypes:

FYPO:0008166 - abolished protein localization to kinetochore during mitotic prometaphase

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Genotypes:

FYPO:0001269 - abolished protein localization to kinetochore during vegetative growth

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Genotypes:

FYPO:0002678 - abolished protein phosphorylation

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Genotypes:

FYPO:0000705 - abolished protein-protein interaction

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Genotypes:

FYPO:0001978 - bent mitotic spindle

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Genotypes:

FYPO:0001270 - complete but unequal mitotic sister chromatid segregation

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Genotypes:

FYPO:0000082 - decreased cell population growth at high temperature

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Genotypes:

FYPO:0005781 - decreased duration of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0006423 - decreased meiotic sister chromatid cohesion at centromere during meiosis I

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Genotypes:

FYPO:0003002 - decreased protein localization to centromere during mitotic metaphase

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Genotypes:

FYPO:0004212 - decreased protein localization to kinetochore during meiosis I

References:

Genotypes:

FYPO:0008165 - decreased protein localization to kinetochore during mitotic prometaphase

References:

Genotypes:

FYPO:0005300 - decreased protein localization to kinetochore during mitotic spindle assembly checkpoint signaling

References:

Genotypes:

FYPO:0002902 - decreased protein localization to kinetochore during vegetative growth

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Genotypes:

FYPO:0002679 - decreased protein phosphorylation

References:

Genotypes:

FYPO:0001645 - decreased protein-protein interaction

References:

Genotypes:

FYPO:0005727 - decreased rate of deactivation of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0005780 - decreased response to mitotic spindle assembly checkpoint signaling

References:

Genotypes:

FYPO:0001355 - decreased vegetative cell population growth

References:

Genotypes:

FYPO:0001271 - incomplete, unequal mitotic sister chromatid segregation

References:

Genotypes:

FYPO:0001272 - incomplete, unequal mitotic sister chromatid segregation, with smeared DNA

References:

Genotypes:

FYPO:0002638 - increased activation of mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0001840 - increased minichromosome loss during vegetative growth

References:

Genotypes:

FYPO:0000847 - increased protein degradation during vegetative growth

References:

Genotypes:

FYPO:0000451 - increased protein localization to centromere during vegetative growth

References:

Genotypes:

FYPO:0003003 - increased protein localization to kinetochore during vegetative growth

References:

Genotypes:

FYPO:0001571 - increased protein-protein interaction

References:

Genotypes:

FYPO:0000314 - inviable after spore germination with elongated germ tube

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Genotypes:

FYPO:0002151 - inviable spore

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Genotypes:

FYPO:0001489 - inviable vegetative cell

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Genotypes:

FYPO:0002061 - inviable vegetative cell population

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Genotypes:

FYPO:0000324 - mitotic metaphase/anaphase transition delay

References:

Genotypes:

FYPO:0003758 - mitotic spindle elongation without chromosome separation

References:

Genotypes:

FYPO:0000674 - normal cell population growth at high temperature

References:

Genotypes:

FYPO:0001687 - normal growth on benomyl

References:

Genotypes:

FYPO:0000964 - normal growth on thiabendazole

References:

Genotypes:

FYPO:0001839 - normal minichromosome loss

References:

Genotypes:

FYPO:0003762 - normal mitotic spindle assembly checkpoint

References:

Genotypes:

FYPO:0005232 - normal protein complex binding

References:

Genotypes:

FYPO:0005042 - normal protein localization to kinetochore

References:

Genotypes:

FYPO:0002901 - normal protein localization to kinetochore during vegetative growth

References:

Genotypes:

FYPO:0001357 - normal vegetative cell population growth

References:

Genotypes:

FYPO:0000094 - sensitive to benomyl

References:

Genotypes:

FYPO:0000091 - sensitive to thiabendazole

References:

Genotypes:

FYPO:0003305 - separate mitotic half spindles present

References:

Genotypes:

FYPO:0004236 - thin mitotic spindle midzone

References:

Genotypes:

FYPO:0003241 - unequal mitotic sister chromatid segregation

References:

Genotypes:

FYPO:0002060 - viable vegetative cell population

References:

Genotypes:

Taxonomic conservation

PBO:0011065 - conserved in eukaryotes

PBO:0011071 - conserved in eukaryotes only

PBO:0011064 - conserved in fungi

PBO:0011069 - conserved in metazoa

References:

PBO:0011070 - conserved in vertebrates

References:

PBO:0006222 - predominantly single copy (one to one)

Protein features

IDNameInterPro nameDB name
PF08317Spc7Spc7_domainPFAM
PF18210Knl1_RWD_CKnl1_RWD_CPFAM
SM00787spc73Spc7_domainSMART
PTHR28260SPINDLE POLE BODY COMPONENT SPC105Spc105/Spc7PANTHER
CoilCoilCOILS
mobidb-lite-Disorderdisorder_predictionMOBIDB-Disorder
mobidb-lite-Low-complexitydisorder_predictionMOBIDB-Low-complexity
mobidb-lite-Polardisorder_predictionMOBIDB-Polar
mobidb-lite-Polyampholytedisorder_predictionMOBIDB-Polyampholyte

Orthologs

References / Literature

PMID:23512483 - Making an effective switch at the kinetochore by phosphorylation and dephosphorylation.
Funabiki H et al. Chromosoma 2013 Jun;122(3):135-58
PMID:21712547 - Mitotic substrates of the kinase aurora with roles in chromatin regulation identified through quantitative phosphoproteomics of fission yeast.
Koch A et al. Sci Signal 2011 Jun 28;4(179):rs6
PMID:24763107 - Absolute proteome and phosphoproteome dynamics during the cell cycle of Schizosaccharomyces pombe (Fission Yeast).
Carpy A et al. Mol Cell Proteomics 2014 Aug;13(8):1925-36
PMID:17442892 - The conserved Spc7 protein is required for spindle integrity and links kinetochore complexes in fission yeast.
Kerres A et al. Mol Biol Cell 2007 Jul;18(7):2441-54
PMID:24497846 - A chaperone-assisted degradation pathway targets kinetochore proteins to ensure genome stability.
Kriegenburg F et al. PLoS Genet 2014 Jan;10(1):e1004140
PMID:27618268 - Bub3-Bub1 Binding to Spc7/KNL1 Toggles the Spindle Checkpoint Switch by Licensing the Interaction of Bub1 with Mad1-Mad2.
Mora-Santos MD et al. Curr Biol 2016 Oct 10;26(19):2642-2650
PB_REF:0000006 - Disease associations from Monarch via human-pombe orthologs
PMID:40015273 - A comprehensive Schizosaccharomyces pombe atlas of physical transcription factor interactions with proteins and chromatin.
Skribbe M et al. Mol Cell 2025 Feb 19;
PMID:22521786 - Phosphodependent recruitment of Bub1 and Bub3 to Spc7/KNL1 by Mph1 kinase maintains the spindle checkpoint.
Shepperd LA et al. Curr Biol 2012 May 22;22(10):891-9
PMID:26537787 - Targeting of SUMO substrates to a Cdc48-Ufd1-Npl4 segregase and STUbL pathway in fission yeast.
Køhler JB et al. Nat Commun 2015 Nov 05;6:8827
PMID:29196561 - Hierarchical Regulation of Centromeric Cohesion Protection by Meikin and Shugoshin during Meiosis I.
Miyazaki S et al. Cold Spring Harb Symp Quant Biol 2017;82:259-266
PMID:28497540 - Meikin-associated polo-like kinase specifies Bub1 distribution in meiosis I.
Miyazaki S et al. Genes Cells 2017 Jun;22(6):552-567
PMID:15371542 - The fission yeast kinetochore component Spc7 associates with the EB1 family member Mal3 and is required for kinetochore-spindle association.
Kerres A et al. Mol Biol Cell 2004 Dec;15(12):5255-67
PMID:28017606 - Generation of a Spindle Checkpoint Arrest from Synthetic Signaling Assemblies.
Yuan I et al. Curr Biol 2017 Jan 09;27(1):137-143
PMID:25720772 - Quantitative phosphoproteomics reveals pathways for coordination of cell growth and division by the conserved fission yeast kinase pom1.
Kettenbach AN et al. Mol Cell Proteomics 2015 May;14(5):1275-87
PMID:15502821 - A conserved Mis12 centromere complex is linked to heterochromatic HP1 and outer kinetochore protein Zwint-1.
Obuse C et al. Nat Cell Biol 2004 Nov;6(11):1135-41
PMID:34849791 - Perturbation of kinetochore function using GFP-binding protein in fission yeast.
Deng DJ et al. G3 (Bethesda) 2021 Oct 19;11(11)
PMID:19547744 - Evolution of phosphoregulation: comparison of phosphorylation patterns across yeast species.
Beltrao P et al. PLoS Biol 2009 Jun 16;7(6):e1000134
PMID:16855021 - Fta2, an essential fission yeast kinetochore component, interacts closely with the conserved Mal2 protein.
Kerres A et al. Mol Biol Cell 2006 Oct;17(10):4167-78
PMID:21664573 - Spindle checkpoint silencing requires association of PP1 to both Spc7 and kinesin-8 motors.
Meadows JC et al. Dev Cell 2011 Jun 14;20(6):739-50
PMID:22660415 - MPS1/Mph1 phosphorylates the kinetochore protein KNL1/Spc7 to recruit SAC components.
Yamagishi Y et al. Nat Cell Biol 2012 Jun 03;14(7):746-52
GO_REF:0000051 - S. pombe keyword mapping
PMID:22065639 - Cdk1 phosphorylation of the kinetochore protein Nsk1 prevents error-prone chromosome segregation.
Chen JS et al. J Cell Biol 2011 Nov 14;195(4):583-93
PMID:29180432 - Phosphorylation of CENP-C by Aurora B facilitates kinetochore attachment error correction in mitosis.
Zhou X et al. Proc Natl Acad Sci U S A 2017 Dec 12;114(50):E10667-E10676
PMID:30824696 - Systematic analysis reveals the prevalence and principles of bypassable gene essentiality.
Li J et al. Nat Commun 2019 Mar 01;10(1):1002
PMID:26483559 - Nup132 modulates meiotic spindle attachment in fission yeast by regulating kinetochore assembly.
Yang HJ et al. J Cell Biol 2015 Oct 26;211(2):295-308
PMID:31257143 - The Bub1-TPR Domain Interacts Directly with Mad3 to Generate Robust Spindle Checkpoint Arrest.
Leontiou I et al. Curr Biol 2019 Jul 22;29(14):2407-2414.e7
PMID:36537249 - The fission yeast kinetochore complex Mhf1-Mhf2 regulates the spindle assembly checkpoint and faithful chromosome segregation.
Jian Y et al. J Cell Sci 2023 Jan 15;136(2)
PMID:20473289 - Analysis of a genome-wide set of gene deletions in the fission yeast Schizosaccharomyces pombe.
Kim DU et al. Nat Biotechnol 2010 Jun;28(6):617-623
PMID:21511999 - Comparative functional genomics of the fission yeasts.
Rhind N et al. Science 2011 May 20;332(6032):930-6
PMID:17035632 - Reconstruction of the kinetochore during meiosis in fission yeast Schizosaccharomyces pombe.
Hayashi A et al. Mol Biol Cell 2006 Dec;17(12):5173-84
PMID:16079914 - Molecular analysis of kinetochore architecture in fission yeast.
Liu X et al. EMBO J 2005 Aug 17;24(16):2919-30
GO_REF:0000024 - Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity.
PMID:22711988 - Sos7, an essential component of the conserved Schizosaccharomyces pombe Ndc80-MIND-Spc7 complex, identifies a new family of fungal kinetochore proteins.
Jakopec V et al. Mol Cell Biol 2012 Aug;32(16):3308-20
PMID:23101633 - Quantitative analysis of fission yeast transcriptomes and proteomes in proliferating and quiescent cells.
Marguerat S et al. Cell 2012 Oct 26;151(3):671-83
PMID:24477934 - Mad1 contribution to spindle assembly checkpoint signalling goes beyond presenting Mad2 at kinetochores.
Heinrich S et al. EMBO Rep 2014 Mar;15(3):291-8
PMID:30726745 - Fission Yeast NDR/LATS Kinase Orb6 Regulates Exocytosis via Phosphorylation of the Exocyst Complex.
Tay YD et al. Cell Rep 2019 Feb 05;26(6):1654-1667.e7
PMID:33823663 - A TOR (target of rapamycin) and nutritional phosphoproteome of fission yeast reveals novel targets in networks conserved in humans.
Halova L et al. Open Biol 2021 Apr;11(4):200405
PMID:23166349 - Csi1 links centromeres to the nuclear envelope for centromere clustering.
Hou H et al. J Cell Biol 2012 Nov 26;199(5):735-44
PMID:23697806 - A genome-wide resource of cell cycle and cell shape genes of fission yeast.
Hayles J et al. Open Biol 2013 May 22;3(5):130053
PMID:27298342 - Identification of S-phase DNA damage-response targets in fission yeast reveals conservation of damage-response networks.
Willis NA et al. Proc Natl Acad Sci U S A 2016 Jun 28;113(26):E3676-85
PMID:29996109 - Quantitative Phosphoproteomics Reveals the Signaling Dynamics of Cell-Cycle Kinases in the Fission Yeast Schizosaccharomyces pombe.
Swaffer MP et al. Cell Rep 2018 Jul 10;24(2):503-514
PMID:36705602 - Unraveling the kinetochore nanostructure in Schizosaccharomyces pombe using multi-color SMLM imaging.
Virant D et al. J Cell Biol 2023 Apr 03;222(4)