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25 sources retrieved · Most recent: April 2026 · Index updated 14 days ago
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CLASP2
cytoplasmic linker associated protein 2
Chromosome 3 · 3p22.3
NCBI Gene: 23122Ensembl: ENSG00000163539.19HGNC: HGNC:17078UniProt: A0A0U1RQI6
153PubMed Papers
20Diseases
0Drugs
0Pathogenic Variants
DATA QUALITY
✓ Experimental GO Evidence✓ Swiss-Prot Reviewed
trans-Golgi networkmicrotubulefocal adhesionmitotic spindleneurodegenerative diseaseAbnormal nasolacrimal system morphologystricture or kinking of uretermyopia
✦AI Summary

CLASP2 (cytoplasmic linker associated protein 2) is a microtubule plus-end tracking protein that plays critical roles in microtubule dynamics regulation and cellular processes. CLASP2 suppresses microtubule catastrophe and promotes rescue events without affecting microtubule growth or shrinkage rates, with these effects enhanced through synergistic interactions with EB1 protein 1. During mitosis, CLASP2 localizes to kinetochores, centrosomes, and spindles, where it regulates kinetochore-microtubule dynamics essential for chromosome 3 fidelity 23. CLASP2 exists predominantly as a monomer but can self-associate through its C-terminal domain, and its kinetochore localization helps stabilize microtubule attachments by binding to curved protofilaments at microtubule plus-ends 3. The protein enhances binding to detyrosinated microtubules during mitosis, contributing to load-bearing kinetochore attachments 4. CLASP2 also promotes cell migration and wound healing through interactions with IQGAP1 and other cytoskeletal proteins 5. In disease contexts, CLASP2 is implicated in bladder cancer progression and cisplatin resistance, promoting epithelial-mesenchymal transition and serving as a potential prognostic marker 67. Loss of CLASP2 function leads to chr3 instability and compromised mitotic fidelity in mammalian cells 2.

Sources cited
1
CLASP2 suppresses microtubule catastrophe and promotes rescue, with effects enhanced by EB1 interaction
PMID: 29540526
2
CLASP2 localizes to kinetochores during mitosis and regulates spindle function and chromosome segregation
PMID: 16914514
3
CLASP2 exists as monomer, self-associates through C-terminal domain, and binds curved protofilaments at kinetochores
PMID: 31757788
4
CLASP2 binding is enhanced on detyrosinated microtubules during mitosis
PMID: 39521805
5
CLASP2 promotes cell migration and wound healing through IQGAP1 interactions
PMID: 30835922
6
CLASP2 is involved in bladder cancer EMT and progression
PMID: 28166762
7
CLASP2 promotes bladder cancer malignancy and cisplatin resistance
PMID: 40382315
Disease Associationsⓘ20
neurodegenerative diseaseOpen Targets
0.42Moderate
Abnormal nasolacrimal system morphologyOpen Targets
0.30Weak
stricture or kinking of ureterOpen Targets
0.29Weak
myopiaOpen Targets
0.28Weak
placental retentionOpen Targets
0.26Weak
Myocardial IschemiaOpen Targets
0.25Weak
cervical carcinomaOpen Targets
0.24Weak
adult-onset Still's diseaseOpen Targets
0.12Weak
atherosclerosisOpen Targets
0.08Suggestive
colon adenocarcinomaOpen Targets
0.06Suggestive
neoplasmOpen Targets
0.05Suggestive
oropharynx cancerOpen Targets
0.04Suggestive
alcohol drinkingOpen Targets
0.04Suggestive
breast cancerOpen Targets
0.03Suggestive
tuberculosisOpen Targets
0.03Suggestive
ShockOpen Targets
0.03Suggestive
hemolysisOpen Targets
0.03Suggestive
carpal tunnel syndromeOpen Targets
0.03Suggestive
ProptosisOpen Targets
0.02Suggestive
urinary bladder carcinomaOpen Targets
0.01Suggestive
Pathogenic Variants
No pathogenic variants reported on ClinVar for this gene.
View on ClinVar ↗
Related Genes
BUB1BProtein interaction100%CDC20Protein interaction99%PLK1Protein interaction98%MAPRE1Protein interaction97%CLIP1Protein interaction96%CLIP2Protein interaction96%
Tissue Expression6 tissues
Brain
100%
Heart
51%
Bone Marrow
33%
Ovary
25%
Lung
16%
Liver
11%
Gene Interaction Network
Click a node to explore
CLASP2BUB1BCDC20PLK1MAPRE1CLIP1CLIP2
PROTEIN STRUCTURE
Preparing viewer…
PDB5NR4 · 1.20 Å · X-ray
View on RCSB ↗
Constraintⓘ
LOEUFⓘ
0.36Moderately Constrained
pLIⓘ
1.00Intolerant
Observed/Expected LoF0.26 [0.19–0.36]
RankingsWhere CLASP2 stands among ~20K protein-coding genes
  • #2,948of 20,598
    Most Researched153 · top quartile
  • #1,660of 17,882
    Most Constrained (LOEUF)0.36 · top 10%
Genes detectedCLASP2
Sources retrieved25 papers
Response time—
📄 Sources
25▼
1
α-tubulin detyrosination fine-tunes kinetochore-microtubule attachments.
PMID: 39521805
Nat Commun · 2024
1.00
2
Human CLASP2 specifically regulates microtubule catastrophe and rescue.
PMID: 29540526
Mol Biol Cell · 2018
0.90
3
Exogenous CLASP2 protein treatment enhances wound healing in vitro and in vivo.
PMID: 30835922
Wound Repair Regen · 2019
0.80
4
CLASP-mediated competitive binding in protein condensates directs microtubule growth.
PMID: 39095354
Nat Commun · 2024
0.76
5
TNF-α drives bladder cancer metastasis via METTL3-mediated m6A modification to promote CLASP2/IQGAP1-dependent cytoskeleton remodeling.
PMID: 40118293
Biochim Biophys Acta Mol Basis Dis · 2025
0.70