P27824 (CALX_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 153.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Calnexin Alternative name(s): IP90 Major histocompatibility complex class I antigen-binding protein p88 p90 | ||
| Gene names |
| ||
| 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 | 592 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Calcium-binding protein that interacts with newly synthesized glycoproteins in the endoplasmic reticulum. It may act in assisting protein assembly and/or in the retention within the ER of unassembled protein subunits. It seems to play a major role in the quality control apparatus of the ER by the retention of incorrectly folded proteins. Associated with partial T-cell antigen receptor complexes that escape the ER of immature thymocytes, it may function as a signaling complex regulating thymocyte maturation. Additionally it may play a role in receptor-mediated endocytosis at the synapse. |
| Subunit structure | Interacts with MAPK3/ERK1. Interacts with KCNH2. Associates with ribosomes. Interacts with SGIP1; involved in negative regulation of endocytosis By similarity. The palmitoylated form interacts with the ribosome-translocon complex component SSR1, promoting efficient folding of glycoproteins. Ref.13 Ref.25 |
| Subcellular location | Endoplasmic reticulum membrane; Single-pass type I membrane protein. Melanosome. Note: Identified by mass spectrometry in melanosome fractions from stage I to stage IV. The palmitoylated form preferentially localizes to the perinuclear rough ER. Ref.11 Ref.14 Ref.25 |
| Post-translational modification | Phosphorylated at Ser-564 by MAPK3/ERK1. phosphorylation by MAPK3/ERK1 increases its association with ribosomes By similarity. Palmitoylation by DHHC6 leads to the preferential localization to the perinuclear rough ER. It mediates the association of calnexin with the ribosome-translocon complex (RTC) which is required for efficient folding of glycosylated proteins. |
| Sequence similarities | Belongs to the calreticulin family. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| NDRG1 | Q92597 | 2 | EBI-355947,EBI-716486 |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 20 | 20 | Potential | ||||||||
| Chain | 21 – 592 | 572 | Calnexin | PRO_0000004198 | |||||||
Regions | |||||||||||
| Topological domain | 21 – 481 | 461 | Lumenal Potential | ||||||||
| Transmembrane | 482 – 502 | 21 | Helical; Potential | ||||||||
| Topological domain | 503 – 592 | 90 | Cytoplasmic Potential | ||||||||
| Repeat | 278 – 290 | 13 | 1-1 | ||||||||
| Repeat | 295 – 307 | 13 | 1-2 | ||||||||
| Repeat | 314 – 326 | 13 | 1-3 | ||||||||
| Repeat | 333 – 345 | 13 | 1-4 | ||||||||
| Repeat | 348 – 358 | 11 | 2-1 | ||||||||
| Repeat | 367 – 377 | 11 | 2-2 | ||||||||
| Repeat | 381 – 391 | 11 | 2-3 | ||||||||
| Repeat | 395 – 405 | 11 | 2-4 | ||||||||
| Region | 276 – 409 | 134 | P domain (Extended arm) By similarity | ||||||||
| Region | 278 – 345 | 68 | 4 X approximate repeats | ||||||||
| Region | 348 – 405 | 58 | 4 X approximate repeats | ||||||||
| Region | 503 – 592 | 90 | Sufficient to mediate interaction with SGIP1 By similarity | ||||||||
Sites | |||||||||||
| Metal binding | 74 | 1 | Calcium; via carbonyl oxygen By similarity | ||||||||
| Metal binding | 117 | 1 | Calcium; via carbonyl oxygen By similarity | ||||||||
| Metal binding | 436 | 1 | Calcium By similarity | ||||||||
| Binding site | 164 | 1 | Carbohydrate By similarity | ||||||||
| Binding site | 166 | 1 | Carbohydrate By similarity | ||||||||
| Binding site | 185 | 1 | Carbohydrate By similarity | ||||||||
| Binding site | 216 | 1 | Carbohydrate By similarity | ||||||||
Amino acid modifications | |||||||||||
| Modified residue | 137 | 1 | N6-acetyllysine Ref.21 | ||||||||
| Modified residue | 554 | 1 | Phosphoserine Ref.12 Ref.15 Ref.16 Ref.17 Ref.18 Ref.19 Ref.22 Ref.24 | ||||||||
| Modified residue | 562 | 1 | Phosphothreonine Ref.24 | ||||||||
| Modified residue | 564 | 1 | Phosphoserine; by MAPK3 Ref.17 Ref.20 Ref.22 Ref.24 | ||||||||
| Modified residue | 583 | 1 | Phosphoserine Ref.12 Ref.15 Ref.16 Ref.22 Ref.24 | ||||||||
| Lipidation | 502 | 1 | S-palmitoyl cysteine Ref.25 | ||||||||
| Lipidation | 503 | 1 | S-palmitoyl cysteine Ref.25 | ||||||||
| Disulfide bond | 160 ↔ 194 | By similarity | |||||||||
| Disulfide bond | 360 ↔ 366 | By similarity | |||||||||
Experimental info | |||||||||||
| Sequence conflict | 179 | 1 | F → L in AAA21749. Ref.2 | ||||||||
| Sequence conflict | 431 – 433 | 3 | SDI → LTF in AAA35696. Ref.9 | ||||||||
| Sequence conflict | 480 | 1 | R → L in AAA35696. Ref.9 | ||||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Interaction with newly synthesized and retained proteins in the endoplasmic reticulum suggests a chaperone function for human integral membrane protein IP90 (calnexin)." David V., Hochstenbach F., Rajagopalan S., Brenner M.B. J. Biol. Chem. 268:9585-9592(1993) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. |
| [2] | "Human, mouse, and rat calnexin cDNA cloning: identification of potential calcium binding motifs and gene localization to human chromosome 5." Tjoelker L.W., Seyfried C.E., Eddy R.L. Jr., Shows T.B. Jr., Calderon J., Schreiber R.B., Gray P.W. Biochemistry 33:3229-3236(1994) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Tissue: Lymph and Placenta. |
| [3] | "The molecular chaperones HSP28, GRP78, endoplasmin, and calnexin exhibit strikingly different levels in quiescent keratinocytes as compared to their proliferating normal and transformed counterparts: cDNA cloning and expression of calnexin." Honore B., Rasmussen H.H., Celis A., Leffers H., Madsen P., Celis J.E. Electrophoresis 15:482-490(1994) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Tissue: Keratinocyte. |
| [4] | Hansen J.J., Jorgensen M.M., Bolund L., Gregersen N. Submitted (FEB-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Tissue: Fibroblast. |
| [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]. Tissue: Cerebellum. |
| [6] | Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. Venter J.C.Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [7] | "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]. Tissue: Placenta. |
| [8] | Bienvenut W.V. Submitted (MAR-2005) to UniProtKB Cited for: PROTEIN SEQUENCE OF 62-77; 171-193; 200-205; 221-227; 401-415; 517-525 AND 574-582, MASS SPECTROMETRY. Tissue: B-cell lymphoma. |
| [9] | "The major histocompatibility complex class I antigen-binding protein p88 is the product of the calnexin gene." Galvin K., Krishna S., Ponchel F., Frohlich M., Cummings D.E., Carlson R., Wands J.R., Isselbacher K.J., Pillai S., Ozturk M. Proc. Natl. Acad. Sci. U.S.A. 89:8452-8456(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 237-592. |
| [10] | "Microsequences of 145 proteins recorded in the two-dimensional gel protein database of normal human epidermal keratinocytes." Rasmussen H.H., van Damme J., Puype M., Gesser B., Celis J.E., Vandekerckhove J. Electrophoresis 13:960-969(1992) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 275-286; 293-313; 383-398 AND 516-523. Tissue: Keratinocyte. |
| [11] | "Proteomic analysis of early melanosomes: identification of novel melanosomal proteins." Basrur V., Yang F., Kushimoto T., Higashimoto Y., Yasumoto K., Valencia J., Muller J., Vieira W.D., Watabe H., Shabanowitz J., Hearing V.J., Hunt D.F., Appella E. J. Proteome Res. 2:69-79(2003) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION [LARGE SCALE ANALYSIS], MASS SPECTROMETRY. Tissue: Melanoma. |
| [12] | "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks." Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P., Mann M. Cell 127:635-648(2006) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-554 AND SER-583, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [13] | "Mechanisms of pharmacological rescue of trafficking-defective hERG mutant channels in human long QT syndrome." Gong Q., Jones M.A., Zhou Z. J. Biol. Chem. 281:4069-4074(2006) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH KCNH2. |
| [14] | "Proteomic and bioinformatic characterization of the biogenesis and function of melanosomes." Chi A., Valencia J.C., Hu Z.-Z., Watabe H., Yamaguchi H., Mangini N.J., Huang H., Canfield V.A., Cheng K.C., Yang F., Abe R., Yamagishi S., Shabanowitz J., Hearing V.J., Wu C., Appella E., Hunt D.F. J. Proteome Res. 5:3135-3144(2006) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION [LARGE SCALE ANALYSIS], MASS SPECTROMETRY. Tissue: Melanoma. |
| [15] | "Phosphoproteome of resting human platelets." Zahedi R.P., Lewandrowski U., Wiesner J., Wortelkamp S., Moebius J., Schuetz C., Walter U., Gambaryan S., Sickmann A. J. Proteome Res. 7:526-534(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-554 AND SER-583, MASS SPECTROMETRY. Tissue: Platelet. |
| [16] | "Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle." Daub H., Olsen J.V., Bairlein M., Gnad F., Oppermann F.S., Korner R., Greff Z., Keri G., Stemmann O., Mann M. Mol. Cell 31:438-448(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-554 AND SER-583, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [17] | "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-554 AND SER-564, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [18] | "Large-scale phosphoproteome analysis of human liver tissue by enrichment and fractionation of phosphopeptides with strong anion exchange chromatography." Han G., Ye M., Zhou H., Jiang X., Feng S., Jiang X., Tian R., Wan D., Zou H., Gu J. Proteomics 8:1346-1361(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-554, MASS SPECTROMETRY. Tissue: Liver. |
| [19] | "Large-scale proteomics analysis of the human kinome." Oppermann F.S., Gnad F., Olsen J.V., Hornberger R., Greff Z., Keri G., Mann M., Daub H. Mol. Cell. Proteomics 8:1751-1764(2009) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-554, MASS SPECTROMETRY. |
| [20] | "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-564, MASS SPECTROMETRY. Tissue: Leukemic T-cell. |
| [21] | "Lysine acetylation targets protein complexes and co-regulates major cellular functions." Choudhary C., Kumar C., Gnad F., Nielsen M.L., Rehman M., Walther T.C., Olsen J.V., Mann M. Science 325:834-840(2009) [PubMed] [Europe PMC] [Abstract] Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT LYS-137, MASS SPECTROMETRY. |
| [22] | "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-554; SER-564 AND SER-583, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [23] | "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]. |
| [24] | "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-554; THR-562; SER-564 AND SER-583, MASS SPECTROMETRY. |
| [25] | "Palmitoylated calnexin is a key component of the ribosome-translocon complex." Lakkaraju A.K., Abrami L., Lemmin T., Blaskovic S., Kunz B., Kihara A., Dal Peraro M., van der Goot F.G. EMBO J. 31:1823-1835(2012) [PubMed] [Europe PMC] [Abstract] Cited for: PALMITOYLATION AT CYS-502 AND CYS-503 BY DHHC6, SUBCELLULAR LOCATION, INTERACTION WITH SSR1. |
| + | Additional computationally mapped references. |
Web resources
| Wikipedia Calnexin entry |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | L10284 mRNA. Translation: AAA36125.1. L18887 mRNA. Translation: AAA21013.1. M94859 mRNA. Translation: AAA21749.1. M98452 mRNA. Translation: AAA35696.1. AK312334 mRNA. Translation: BAG35255.1. CH471165 Genomic DNA. Translation: EAW53802.1. CH471165 Genomic DNA. Translation: EAW53803.1. CH471165 Genomic DNA. Translation: EAW53805.1. BC003552 mRNA. Translation: AAH03552.1. BC042843 mRNA. Translation: AAH42843.1. AJ271880 mRNA. Translation: CAB72137.1. |
| IPI | IPI00941747. |
| PIR | A46164. A46673. I53260. |
| RefSeq | NP_001019820.1. NM_001024649.1. NP_001737.1. NM_001746.3. |
| UniGene | Hs.567968. |
3D structure databases | |
| ProteinModelPortal | P27824. |
| ModBase | Search... |
Protein-protein interaction databases | |
| DIP | DIP-457N. |
| IntAct | P27824. 20 interactions. |
| MINT | MINT-5000964. |
| STRING | 9606.ENSP00000247461. |
PTM databases | |
| PhosphoSite | P27824. |
Polymorphism databases | |
| DMDM | 543920. |
Proteomic databases | |
| PaxDb | P27824. |
| PeptideAtlas | P27824. |
| PRIDE | P27824. |
Protocols and materials databases | |
| DNASU | 821. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000247461; ENSP00000247461; ENSG00000127022. ENST00000452673; ENSP00000391646; ENSG00000127022. ENST00000504734; ENSP00000424063; ENSG00000127022. |
| GeneID | 821. |
| KEGG | hsa:821. |
| UCSC | uc003mkk.3. human. |
Organism-specific databases | |
| CTD | 821. |
| GeneCards | GC05P179105. |
| HGNC | HGNC:1473. CANX. |
| HPA | CAB004738. HPA009433. HPA009696. |
| MIM | 114217. gene. |
| neXtProt | NX_P27824. |
| PharmGKB | PA26055. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG305105. |
| HOGENOM | HOG000192436. |
| HOVERGEN | HBG005407. |
| InParanoid | P27824. |
| KO | K08054. |
| PhylomeDB | P27824. |
Enzyme and pathway databases | |
| Reactome | REACT_17015. Metabolism of proteins. REACT_6900. Immune System. |
Gene expression databases | |
| ArrayExpress | P27824. |
| Bgee | P27824. |
| CleanEx | HS_CANX. |
| Genevestigator | P27824. |
| GermOnline | ENSG00000127022. Homo sapiens. |
Family and domain databases | |
| Gene3D | 2.10.250.10. 1 hit. 2.60.120.200. 1 hit. |
| InterPro | IPR001580. Calret/calnex. IPR018124. Calret/calnex_CS. IPR009033. Calreticulin/calnexin_P_dom. IPR008985. ConA-like_lec_gl_sf. IPR013320. ConA-like_subgrp. [Graphical view] |
| PANTHER | PTHR11073. PTHR11073. 1 hit. |
| Pfam | PF00262. Calreticulin. 1 hit. [Graphical view] |
| PRINTS | PR00626. CALRETICULIN. |
| SUPFAM | SSF63887. Calret_calnex_P. 1 hit. SSF49899. ConA_like_lec_gl. 2 hits. |
| PROSITE | PS00803. CALRETICULIN_1. 1 hit. PS00804. CALRETICULIN_2. 1 hit. PS00805. CALRETICULIN_REPEAT. 3 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| BindingDB | P27824. |
| ChEMBL | CHEMBL2719. |
| ChiTaRS | CANX. human. |
| DrugBank | DB00009. Alteplase. DB00029. Anistreplase. DB00025. Antihemophilic Factor. DB00015. Reteplase. DB00031. Tenecteplase. |
| GenomeRNAi | 821. |
| NextBio | 3360. |
| SOURCE | Search... |
Entry information
| Entry name | CALX_HUMAN | ||||||||
| Accession | Primary (citable) accession number: P27824 Secondary accession number(s): B2R5V8, D3DWQ3 | ||||||||
| 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 5 Human chromosome 5: 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
