SKA1
spindle and kinetochore associated complex subunit 1 | MGC10200, C18orf24

Enables microtubule binding activity. Involved in attachment of mitotic spindle microtubules to kinetochore; negative regulation of mitotic spindle assembly checkpoint signaling; and positive regulation of microtubule polymerization. Located in several cellular components, including intercellular bridge; kinetochore; and microtubule cytoskeleton. Part of SKA complex. [provided by Alliance of Genome Resources, Jul 2025]

Member of: DE-11 DE-11.2 Developmental clusters: GC7
Biological processes 40 terms
SKA complex (GO:0170027)attachment of mitotic spindle microtubules to kinetochore (GO:0051315)attachment of mitotic spindle microtubules to kinetochore (GO:0051315)cell division (GO:0051301)centrosome (GO:0005813)centrosome (GO:0005813)chromosome segregation (GO:0007059)chromosome segregation (GO:0007059)cytosol (GO:0005829)establishment of meiotic spindle orientation (GO:0051296)establishment of meiotic spindle orientation (GO:0051296)kinetochore (GO:0000776)kinetochore (GO:0000776)meiotic spindle (GO:0072687)metaphase chromosome alignment (GO:0051310)microtubule binding (GO:0008017)microtubule binding (GO:0008017)microtubule binding (GO:0008017)microtubule cytoskeleton (GO:0015630)mitotic cell cycle (GO:0000278)mitotic cell cycle (GO:0000278)mitotic metaphase chromosome alignment (GO:0007080)mitotic sister chromatid segregation (GO:0000070)mitotic spindle (GO:0072686)mitotic spindle (GO:0072686)mitotic spindle microtubule (GO:1990498)negative regulation of mitotic spindle assembly checkpoint signaling (GO:0140499)nuclear chromosome segregation (GO:0098813)nuclear division (GO:0000280)outer kinetochore (GO:0000940)outer kinetochore (GO:0000940)positive regulation of microtubule polymerization (GO:0031116)protein binding (GO:0005515)regulation of microtubule polymerization or depolymerization (GO:0031110)regulation of microtubule polymerization or depolymerization (GO:0031110)spindle (GO:0005819)spindle assembly involved in female meiosis (GO:0007056)spindle assembly involved in female meiosis (GO:0007056)spindle microtubule (GO:0005876)spindle microtubule (GO:0005876)
Expression (TPM)
SKA1 — as a Regulated Gene

TFs regulating SKA1 0 TFs

Transcription factors with Perturb-seq knockdown data for SKA1. The Binding column indicates whether any binding evidence exists for this TF–gene pair (ChIP-seq or motif footprint peaks). The Mean coef is the average Perturb-seq regression coefficient across active gRNAs (positive = SKA1 upregulated upon KD; negative = downregulated). The Outlier column indicates whether this gene is in the top or bottom 5% of all TF knockdown effects.

Data: Effect:
TF Mean coef Binding Outlier TF→Gene link

Elements linked to SKA1

Open chromatin peaks (ATAC-seq) in the genomic neighbourhood of SKA1, linked by TSS proximity or chromatin conformation (Multiome / HiCAR). Each element overlaps at least one TF ChIP-seq binding site — the TFs column shows how many distinct TFs bind that element.

Accessibility Element Dist. to TSS Link type TFs
chr18:50,194,148–50,195,562 179.9 kb Distal (>10kb) Multiome 482
chr18:50,230,869–50,232,199 143.3 kb Distal (>10kb) Multiome 139
chr18:50,232,326–50,232,896 142.2 kb Distal (>10kb) Multiome 108
chr18:50,266,119–50,266,730 108.5 kb Distal (>10kb) Multiome 493
chr18:50,268,096–50,268,782 106.5 kb Distal (>10kb) Multiome 343
chr18:50,281,123–50,282,656 93.4 kb Distal (>10kb) Multiome 877
chr18:50,287,072–50,288,411 87.2 kb Distal (>10kb) Multiome 897
chr18:50,307,523–50,307,991 67.2 kb Distal (>10kb) Multiome 265
chr18:50,374,233–50,375,652 21 bp At TSS Multiome 732
chr18:50,398,965–50,399,883 24.2 kb Distal (>10kb) Multiome 106
chr18:50,559,125–50,561,284 185.0 kb Distal (>10kb) Multiome 350

Genome Browser

Genomic view of the SKA1 locus showing ATAC-seq accessibility and RNA-seq expression across the ESC → DE time course, together with TF binding peaks and element-to-TSS loop connections.

chr18:50,184,148 – 50,571,284
Proximal 1 kb Distal 10 kb Multiome HiCAR ATAC-seq RNA-seq