O75122 (CLAP2_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 108.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: CLIP-associating protein 2 Alternative name(s): Cytoplasmic linker-associated protein 2 Protein Orbit homolog 2 Short name=hOrbit2 | ||||
| Gene names |
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| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 1294 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Microtubule plus-end tracking protein that promotes the stabilization of dynamic microtubules. Involved in the nucleation of noncentrosomal microtubules originating from the trans-Golgi network (TGN). Required for the polarization of the cytoplasmic microtubule arrays in migrating cells towards the leading edge of the cell. May act at the cell cortex to enhance the frequency of rescue of depolymerizing microtubules by attaching their plus-ends to cortical platforms composed of ERC1 and PHLDB2. This cortical microtubule stabilizing activity is regulated at least in part by phosphatidylinositol 3-kinase signaling. Also performs a similar stabilizing function at the kinetochore which is essential for the bipolar alignment of chromosomes on the mitotic spindle. Acts as a mediator of ERBB2-dependent stabilization of microtubules at the cell cortex. Ref.3 Ref.7 Ref.10 Ref.11 Ref.12 Ref.13 Ref.19 |
| Subunit structure | Interacts with CLIP2, ERC1, MAPRE3, microtubules, PHLDB2 and RSN. The interaction with ERC1 may be mediated by PHLDB2. Interacts with MAPRE1; probably required for targeting to the growing microtubule plus ends. Interacts with GCC2; recruits CLASP2 to Golgi membranes. Interacts with MACF1 By similarity. Ref.3 Ref.7 Ref.8 Ref.10 Ref.13 Ref.17 |
| Subcellular location | Cytoplasm › cytoskeleton. Cytoplasm › cytoskeleton › centrosome. Chromosome › centromere › kinetochore. Cytoplasm › cytoskeleton › spindle. Golgi apparatus. Golgi apparatus › trans-Golgi network. Cell membrane. Cell projection › ruffle membrane. Note: Localizes to microtubule plus ends. Localizes to centrosomes, kinetochores and the mitotic spindle from prometaphase. Subsequently localizes to the spindle midzone from anaphase and to the midbody from telophase. In migrating cells localizes to the plus ends of microtubules within the cell body and to the entire microtubule lattice within the lamella. Localizes to the cell cortex and this requires ERC1 and PHLDB2. The MEMO1-RHOA-DIAPH1 signaling pathway controls localization of the phosophorylated form to the cell membrane. Ref.3 Ref.6 Ref.7 Ref.8 Ref.10 Ref.11 Ref.12 Ref.13 Ref.17 Ref.19 |
| Tissue specificity | Brain-specific. |
| Domain | The microtubule tip localization signal (MtLS) motif; mediates interaction with MAPRE1 and targeting to the growing microtubule plus ends. Ref.17 |
| Post-translational modification | Phosphorylated by GSK3B. Phosphorylation by GSK3B may negatively regulate binding to microtubule lattices in lamella. Ref.8 |
| Sequence similarities | Belongs to the CLASP family. Contains 5 HEAT repeats. |
| Sequence caution | The sequence BAA31602.2 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened. The sequence BAB14995.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| Clip2 | O55156 | 3 | EBI-913524,EBI-349416 | From a different organism. |
Alternative products
| This entry describes 2 isoforms produced by alternative splicing. [Align] [Select] Note: Additional isoforms exist. | ||||||
| Isoform 1 (identifier: O75122-1) Also known as: CLASP2 gamma; This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: O75122-2) Also known as: CLASP2 beta; The sequence of this isoform differs from the canonical sequence as follows: 1-6: MAMGDD → MRRLICKRICDY 410-425: DTSDKLDGTASEDGRV → CEAFWRSGRTAKLYSV 426-1294: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1294 | 1294 | CLIP-associating protein 2 | PRO_0000089849 | |||||
Regions | |||||||||
| Repeat | 173 – 208 | 36 | HEAT 1 | ||||||
| Repeat | 209 – 245 | 37 | HEAT 2 | ||||||
| Repeat | 772 – 809 | 38 | HEAT 3 | ||||||
| Repeat | 1098 – 1135 | 38 | HEAT 4 | ||||||
| Repeat | 1216 – 1253 | 38 | HEAT 5 | ||||||
| Region | 444 – 580 | 137 | Interaction with microtubules, MAPRE1 and MAPRE3 | ||||||
| Region | 872 – 1294 | 423 | Interaction with RSN and localization to the Golgi and kinetochores | ||||||
| Region | 1017 – 1294 | 278 | Required for cortical localization | ||||||
| Coiled coil | 1055 – 1084 | 30 | Potential | ||||||
| Motif | 494 – 497 | 4 | Microtubule tip localization signal | ||||||
| Motif | 517 – 520 | 4 | Microtubule tip localization signal | ||||||
| Compositional bias | 310 – 587 | 278 | Ser-rich | ||||||
| Compositional bias | 1104 – 1108 | 5 | Poly-Leu | ||||||
Amino acid modifications | |||||||||
| Modified residue | 8 | 1 | Phosphoserine Ref.22 | ||||||
| Modified residue | 370 | 1 | Phosphoserine Ref.16 Ref.18 Ref.22 | ||||||
| Modified residue | 455 | 1 | Phosphoserine Ref.22 | ||||||
| Modified residue | 507 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 525 | 1 | Phosphoserine Ref.16 | ||||||
| Modified residue | 529 | 1 | Phosphoserine Ref.16 | ||||||
| Modified residue | 596 | 1 | Phosphoserine Ref.16 Ref.18 Ref.22 | ||||||
| Modified residue | 1029 | 1 | Phosphoserine Ref.16 Ref.18 Ref.20 | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 6 | 6 | MAMGDD → MRRLICKRICDY in isoform 2. | VSP_015805 | |||||
| Alternative sequence | 410 – 425 | 16 | DTSDK…EDGRV → CEAFWRSGRTAKLYSV in isoform 2. | VSP_015806 | |||||
| Alternative sequence | 426 – 1294 | 869 | Missing in isoform 2. | VSP_015807 | |||||
Experimental info | |||||||||
| Mutagenesis | 496 – 497 | 2 | IP → SS: Reduced targeting to the growing microtubule plus ends. Loss of interaction with MAPRE1 and targeting to the growing microtubule plus ends; when associated with 519-S-S-520. Ref.17 | ||||||
| Mutagenesis | 519 – 520 | 2 | IP → SS: Reduced targeting to the growing microtubule plus ends. Loss of interaction with MAPRE1 and targeting to the growing microtubule plus ends; when associated with 496-S-S-497. Ref.17 | ||||||
| Sequence conflict | 392 | 1 | R → S in BAA31602. Ref.1 | ||||||
| Sequence conflict | 392 | 1 | R → S in AAH29035. Ref.2 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Prediction of the coding sequences of unidentified human genes. X. The complete sequences of 100 new cDNA clones from brain which can code for large proteins in vitro." Ishikawa K., Nagase T., Suyama M., Miyajima N., Tanaka A., Kotani H., Nomura N., Ohara O. DNA Res. 5:169-176(1998) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). Tissue: Brain. |
| [2] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). Tissue: Brain. |
| [3] | "Clasps are CLIP-115 and -170 associating proteins involved in the regional regulation of microtubule dynamics in motile fibroblasts." Akhmanova A., Hoogenraad C.C., Drabek K., Stepanova T., Dortland B., Verkerk T., Vermeulen W., Burgering B.M., de Zeeuw C.I., Grosveld F., Galjart N. Cell 104:923-935(2001) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1-9 (ISOFORM 1), NUCLEOTIDE SEQUENCE [MRNA] OF 1-15 (ISOFORM 2), FUNCTION, ALTERNATIVE SPLICING, SUBCELLULAR LOCATION, INTERACTION WITH CLIP2; MICROTUBULES AND RSN. Tissue: Brain. |
| [4] | "The full-ORF clone resource of the German cDNA consortium." Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U., Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D., Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A., Wiemann S., Schupp I. BMC Genomics 8:399-399(2007) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 939-1294 (ISOFORM 1). Tissue: Testis. |
| [5] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 1128-1294 (ISOFORM 1). |
| [6] | "The microtubule plus end tracking protein Orbit/MAST/CLASP acts downstream of the tyrosine kinase Abl in mediating axon guidance." Lee H., Engel U., Rusch J., Scherrer S., Sheard K., Van Vactor D. Neuron 42:913-926(2004) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION. |
| [7] | "CLASP1 and CLASP2 bind to EB1 and regulate microtubule plus-end dynamics at the cell cortex." Mimori-Kiyosue Y., Grigoriev I., Lansbergen G., Sasaki H., Matsui C., Severin F., Galjart N., Grosveld F., Vorobjev I., Tsukita S., Akhmanova A. J. Cell Biol. 168:141-153(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH MAPRE1; MAPRE3; MICROTUBULES AND RSN, SUBCELLULAR LOCATION. |
| [8] | "Spatial regulation of CLASP affinity for microtubules by Rac1 and GSK3beta in migrating epithelial cells." Wittmann T., Waterman-Storer C.M. J. Cell Biol. 169:929-939(2005) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MICROTUBULES, SUBCELLULAR LOCATION, PHOSPHORYLATION BY GSK3B. |
| [9] | Erratum Wittmann T., Waterman-Storer C.M. J. Cell Biol. 171:393-393(2005) |
| [10] | "CLASPs attach microtubule plus ends to the cell cortex through a complex with LL5beta." Lansbergen G., Grigoriev I., Mimori-Kiyosue Y., Ohtsuka T., Higa S., Kitajima I., Demmers J., Galjart N., Houtsmuller A.B., Grosveld F., Akhmanova A. Dev. Cell 11:21-32(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, IDENTIFICATION BY MASS SPECTROMETRY, INTERACTION WITH ERC1; PHLDB2 AND RSN, SUBCELLULAR LOCATION. |
| [11] | "Mammalian CLASPs are required for mitotic spindle organization and kinetochore alignment." Mimori-Kiyosue Y., Grigoriev I., Sasaki H., Matsui C., Akhmanova A., Tsukita S., Vorobjev I. Genes Cells 11:845-857(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION. |
| [12] | "Mammalian CLASP1 and CLASP2 cooperate to ensure mitotic fidelity by regulating spindle and kinetochore function." Pereira A.L., Pereira A.J., Maia A.R.R., Drabek K., Sayas C.L., Hergert P.J., Lince-Faria M., Matos I., Duque C., Stepanova T., Rieder C.L., Earnshaw W.C., Galjart N., Maiato H. Mol. Biol. Cell 17:4526-4542(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION. |
| [13] | "Asymmetric CLASP-dependent nucleation of noncentrosomal microtubules at the trans-Golgi network." Efimov A., Kharitonov A., Efimova N., Loncarek J., Miller P.M., Andreyeva N., Gleeson P., Galjart N., Maia A.R., McLeod I.X., Yates J.R. III, Maiato H., Khodjakov A., Akhmanova A., Kaverina I. Dev. Cell 12:917-930(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH GCC2, SUBCELLULAR LOCATION. |
| [14] | "ATM and ATR substrate analysis reveals extensive protein networks responsive to DNA damage." Matsuoka S., Ballif B.A., Smogorzewska A., McDonald E.R. III, Hurov K.E., Luo J., Bakalarski C.E., Zhao Z., Solimini N., Lerenthal Y., Shiloh Y., Gygi S.P., Elledge S.J. Science 316:1160-1166(2007) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Embryonic kidney. |
| [15] | "Phosphorylation analysis of primary human T lymphocytes using sequential IMAC and titanium oxide enrichment." Carrascal M., Ovelleiro D., Casas V., Gay M., Abian J. J. Proteome Res. 7:5167-5176(2008) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: T-cell. |
| [16] | "A quantitative atlas of mitotic phosphorylation." Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P. Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-370; SER-525; SER-529; SER-596 AND SER-1029, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [17] | "An EB1-binding motif acts as a microtubule tip localization signal." Honnappa S., Gouveia S.M., Weisbrich A., Damberger F.F., Bhavesh N.S., Jawhari H., Grigoriev I., van Rijssel F.J., Buey R.M., Lawera A., Jelesarov I., Winkler F.K., Wuthrich K., Akhmanova A., Steinmetz M.O. Cell 138:366-376(2009) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MAPRE1, SUBCELLULAR LOCATION, DOMAIN MICROTUBULE TIP LOCALIZATION SIGNAL, MUTAGENESIS OF 496-ILE-PRO-497 AND 519-ILE-PRO-520. |
| [18] | "Quantitative phosphoproteomic analysis of T cell receptor signaling reveals system-wide modulation of protein-protein interactions." Mayya V., Lundgren D.H., Hwang S.-I., Rezaul K., Wu L., Eng J.K., Rodionov V., Han D.K. Sci. Signal. 2:RA46-RA46(2009) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-370; SER-596 AND SER-1029, MASS SPECTROMETRY. Tissue: Leukemic T-cell. |
| [19] | "ErbB2 receptor controls microtubule capture by recruiting ACF7 to the plasma membrane of migrating cells." Zaoui K., Benseddik K., Daou P., Salaun D., Badache A. Proc. Natl. Acad. Sci. U.S.A. 107:18517-18522(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION. |
| [20] | "Quantitative phosphoproteomics reveals widespread full phosphorylation site occupancy during mitosis." Olsen J.V., Vermeulen M., Santamaria A., Kumar C., Miller M.L., Jensen L.J., Gnad F., Cox J., Jensen T.S., Nigg E.A., Brunak S., Mann M. Sci. Signal. 3:RA3-RA3(2010) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1029, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [21] | "Initial characterization of the human central proteome." Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., Bennett K.L., Superti-Furga G., Colinge J. BMC Syst. Biol. 5:17-17(2011) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. |
| [22] | "System-wide temporal characterization of the proteome and phosphoproteome of human embryonic stem cell differentiation." Rigbolt K.T., Prokhorova T.A., Akimov V., Henningsen J., Johansen P.T., Kratchmarova I., Kassem M., Mann M., Olsen J.V., Blagoev B. Sci. Signal. 4:RS3-RS3(2011) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-8; SER-370; SER-455 AND SER-596, MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AB014527 mRNA. Translation: BAA31602.2. Different initiation. BC029035 mRNA. Translation: AAH29035.1. AJ288058 mRNA. Translation: CAC35157.1. AJ288059 mRNA. Translation: CAC35158.1. AL137636 mRNA. Translation: CAB70852.1. AK024770 mRNA. Translation: BAB14995.1. Different initiation. |
| IPI | IPI00167067. IPI00945554. |
| PIR | T00386. |
| RefSeq | NP_001193973.1. NM_001207044.1. NP_055912.2. NM_015097.2. |
| UniGene | Hs.108614. |
3D structure databases | |
| ProteinModelPortal | O75122. |
| ModBase | Search... |
Protein-protein interaction databases | |
| DIP | DIP-36804N. |
| IntAct | O75122. 9 interactions. |
| STRING | 9606.ENSP00000352581. |
PTM databases | |
| PhosphoSite | O75122. |
Proteomic databases | |
| PaxDb | O75122. |
| PRIDE | O75122. |
Protocols and materials databases | |
| DNASU | 23122. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000313350; ENSP00000324364; ENSG00000163539. |
| GeneID | 23122. |
| KEGG | hsa:23122. |
| UCSC | uc021wvb.1. human. |
Organism-specific databases | |
| CTD | 23122. |
| GeneCards | GC03M033512. |
| HGNC | HGNC:17078. CLASP2. |
| MIM | 605853. gene. |
| neXtProt | NX_O75122. |
| PharmGKB | PA38435. |
| HUGE | Search... |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG81443. |
| HOGENOM | HOG000236347. |
| HOVERGEN | HBG079692. |
| InParanoid | O75122. |
| KO | K16578. |
Enzyme and pathway databases | |
| Reactome | REACT_111045. Developmental Biology. REACT_113552. Developmental Biology. REACT_115566. Cell Cycle. REACT_21300. Mitotic M-M/G1 phases. |
Gene expression databases | |
| ArrayExpress | O75122. |
| Bgee | O75122. |
| CleanEx | HS_CLASP2. |
| Genevestigator | O75122. |
| GermOnline | ENSG00000163539. Homo sapiens. |
Family and domain databases | |
| Gene3D | 1.25.10.10. 3 hits. |
| InterPro | IPR011989. ARM-like. IPR016024. ARM-type_fold. IPR024395. CLASP_N_dom. [Graphical view] |
| Pfam | PF12348. CLASP_N. 1 hit. [Graphical view] |
| SUPFAM | SSF48371. ARM-type_fold. 1 hit. |
| PROSITE | PS50077. HEAT_REPEAT. False negative. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | CLASP2. human. |
| GenomeRNAi | 23122. |
| NextBio | 44351. |
| SOURCE | Search... |
Entry information
| Entry name | CLAP2_HUMAN | ||||||||
| Accession | Primary (citable) accession number: O75122 Secondary accession number(s): Q7L8F6 Q9NSZ2 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 3 Human chromosome 3: entries, gene names and cross-references to MIM |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
