O75190 (DNJB6_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 126.
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: DnaJ homolog subfamily B member 6 Alternative name(s): HHDJ1 Heat shock protein J2 Short name=HSJ-2 MRJ MSJ-1 | ||||
| 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 | 326 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 | Plays an indispensable role in the organization of KRT8/KRT18 filaments. Acts as an endogenous molecular chaperone for neuronal proteins including huntingtin. Suppresses aggregation and toxicity of polyglutamine-containing, aggregation-prone proteins. Isoform B but not isoform A inhibits huntingtin aggregation. Has a stimulatory effect on the ATPase activity of HSP70 in a dose-dependent and time-dependent manner and hence acts as a co-chaperone of HSP70. Also reduces cellular toxicity and caspase-3 activity. Ref.2 Ref.16 Ref.19 Ref.22 |
| Subunit structure | Homooligomer. Interacts with BAG3, HSPB8 and STUB1. Interacts with ALKBH1 By similarity. Interacts with HSP70, KRT18 and PTTG. Isoform B interacts with histone deacetylases HDAC4, HDAC6, and SIRT2, HDAC activity is required for antiaggregation. Ref.1 Ref.16 Ref.22 |
| Subcellular location | Cytoplasm › perinuclear region. Nucleus. Cytoplasm › myofibril › sarcomere › Z line Ref.16 Ref.22. |
| Tissue specificity | Widely expressed. Highest levels in testis and brain, and lower levels in heart, spleen, intestine, ovary, placenta, lung, kidney, pancreas, thymus, prostate, skeletal muscle, liver and leukocytes. In testis, expressed in germ cells in the earlier stages of differentiation pathway as well as in spermatids. In brain, expressed at a higher level in hippocampus and thalamus and a lower level in amygdala, substantia nigra, corpus callosum and caudate nucleus. Ref.1 Ref.2 Ref.5 Ref.22 |
| Domain | The antiaggregation activity of isoform B resides in the serine-rich region and the C-terminus. |
| Involvement in disease | Limb-girdle muscular dystrophy 1E (LGMD1E) [MIM:603511]: An autosomal dominant myopathy characterized by adult onset of proximal muscle weakness, beginning in the hip girdle region and later progressing to the shoulder girdle region. |
| Sequence similarities | Contains 1 J domain. |
| Sequence caution | The sequence AAD16010.1 differs from that shown. Reason: Frameshift at position 197. The sequence BAD93096.1 differs from that shown. Reason: Erroneous initiation. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| BRMS1 | Q9HCU9 | 2 | EBI-1053164,EBI-714781 | |
| DYSF | O75923 | 2 | EBI-1053164,EBI-2799016 | |
| KRT18 | P05783 | 6 | EBI-1053164,EBI-297888 | |
| SGCG | Q13326 | 2 | EBI-1053164,EBI-5357343 |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform A (identifier: O75190-1) 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 B (identifier: O75190-2) The sequence of this isoform differs from the canonical sequence as follows: 232-241: VADDDALAEE → KEQLLRLDNK 242-326: Missing. | ||||||
| Isoform C (identifier: O75190-3) Also known as: a; The sequence of this isoform differs from the canonical sequence as follows: 301-326: LKEGGKRKKQKQREESKKKKSTKGNH → VQREAAVEQAQSETSLGARGQRGHK | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Initiator methionine | 1 | 1 | Removed Ref.15 | ||||||
| Chain | 2 – 326 | 325 | DnaJ homolog subfamily B member 6 | PRO_0000071025 | |||||
Regions | |||||||||
| Domain | 2 – 69 | 68 | J | ||||||
| Region | 2 – 146 | 145 | Interaction with HSP70 | ||||||
| Region | 119 – 242 | 124 | Interaction with KRT18 | ||||||
| Compositional bias | 83 – 172 | 90 | Gly/Phe-rich | ||||||
| Compositional bias | 155 – 194 | 40 | Ser-rich | ||||||
Amino acid modifications | |||||||||
| Modified residue | 277 | 1 | Phosphoserine Ref.17 Ref.21 | ||||||
Natural variations | |||||||||
| Alternative sequence | 232 – 241 | 10 | VADDDALAEE → KEQLLRLDNK in isoform B. | VSP_001289 | |||||
| Alternative sequence | 242 – 326 | 85 | Missing in isoform B. | VSP_001290 | |||||
| Alternative sequence | 301 – 326 | 26 | LKEGG…TKGNH → VQREAAVEQAQSETSLGARG QRGHK in isoform C. | VSP_026180 | |||||
| Natural variant | 89 | 1 | F → I in LGMD1E; the mutation results in inefficient inhibition of protein aggregation by isoform B. Ref.22 | VAR_067833 | |||||
| Natural variant | 93 | 1 | F → L in LGMD1E; the mutation results in inefficient inhibition of protein aggregation by isoform B. Ref.22 Ref.23 | VAR_067834 | |||||
| Natural variant | 96 | 1 | P → R in LGMD1E. Ref.23 | VAR_067835 | |||||
Experimental info | |||||||||
| Sequence conflict | 128 | 1 | G → S in BAD97321. Ref.9 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Pituitary tumor-transforming gene protein associates with ribosomal protein S10 and a novel human homologue of DnaJ in testicular cells." Pei L. J. Biol. Chem. 274:3151-3158(1999) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM B), INTERACTION WITH PTTG, TISSUE SPECIFICITY. Tissue: Testis. |
| [2] | "Characterization of a brain-enriched chaperone, MRJ, that inhibits Huntingtin aggregation and toxicity independently." Chuang J.-Z., Zhou H., Zhu M., Li S.-H., Li X.-J., Sung C.-H. J. Biol. Chem. 277:19831-19838(2002) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM B), FUNCTION, TISSUE SPECIFICITY. |
| [3] | "Characterization of two isoforms of a human DnaJ homologue, HSJ2." Hanai R., Mashima K. Mol. Biol. Rep. 30:149-153(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS A AND B). |
| [4] | Zhang J.S., Nelson M., Wang L., Smith D.I. Submitted (APR-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM B). Tissue: Pancreas. |
| [5] | "Cloning, tissue expression, and chromosomal assignment of human MRJ gene for a member of the DNAJ protein family." Seki N., Hattori A., Hayashi A., Kozuma S., Miyajima N., Saito T. J. Hum. Genet. 44:185-189(1999) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM B), TISSUE SPECIFICITY. Tissue: Testis. |
| [6] | "HSJ2, a novel human homologue of the bacterial heat-shock protein DnaJ." Zhang W., Wan T., Yuan Z., Cao X. Submitted (JUL-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM B). |
| [7] | "Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201)." Ebert L., Schick M., Neubert P., Schatten R., Henze S., Korn B. Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM B). |
| [8] | "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] (ISOFORM B). |
| [9] | Totoki Y., Toyoda A., Takeda T., Sakaki Y., Tanaka A., Yokoyama S., Ohara O., Nagase T., Kikuno R.F. Submitted (APR-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS A AND C). Tissue: Aortic endothelium and Kidney. |
| [10] | "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] (ISOFORM B). Tissue: Fetal kidney. |
| [11] | "The DNA sequence of human chromosome 7." Hillier L.W., Fulton R.S., Fulton L.A., Graves T.A., Pepin K.H., Wagner-McPherson C., Layman D., Maas J., Jaeger S., Walker R., Wylie K., Sekhon M., Becker M.C., O'Laughlin M.D., Schaller M.E., Fewell G.A., Delehaunty K.D., Miner T.L. Wilson R.K.Nature 424:157-164(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [12] | "Human chromosome 7: DNA sequence and biology." Scherer S.W., Cheung J., MacDonald J.R., Osborne L.R., Nakabayashi K., Herbrick J.-A., Carson A.R., Parker-Katiraee L., Skaug J., Khaja R., Zhang J., Hudek A.K., Li M., Haddad M., Duggan G.E., Fernandez B.A., Kanematsu E., Gentles S. Tsui L.-C.Science 300:767-772(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [13] | 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 (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [14] | "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] (ISOFORMS A AND B). Tissue: Placenta and Skin. |
| [15] | Bienvenut W.V., Waridel P., Quadroni M. Submitted (MAR-2009) to UniProtKB Cited for: PROTEIN SEQUENCE OF 2-12; 48-60; 71-101; 208-242 AND 271-287, CLEAVAGE OF INITIATOR METHIONINE, LACK OF N-TERMINAL ACETYLATION, MASS SPECTROMETRY. Tissue: Embryonic kidney. |
| [16] | "Identification of Mrj, a DnaJ/Hsp40 family protein, as a keratin 8/18 filament regulatory protein." Izawa I., Nishizawa M., Ohtakara K., Ohtsuka K., Inada H., Inagaki M. J. Biol. Chem. 275:34521-34527(2000) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH HSP70 AND KRT18, SUBCELLULAR LOCATION. |
| [17] | "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-277, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [18] | "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: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Cervix carcinoma. |
| [19] | "A DNAJB chaperone subfamily with HDAC-dependent activities suppresses toxic protein aggregation." Hageman J., Rujano M.A., van Waarde M.A., Kakkar V., Dirks R.P., Govorukhina N., Oosterveld-Hut H.M., Lubsen N.H., Kampinga H.H. Mol. Cell 37:355-369(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION AS SUPPRESSOR OF PROTEIN AGGREGATION. |
| [20] | "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]. |
| [21] | "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-277, MASS SPECTROMETRY. |
| [22] | "Mutations affecting the cytoplasmic functions of the co-chaperone DNAJB6 cause limb-girdle muscular dystrophy." Sarparanta J., Jonson P.H., Golzio C., Sandell S., Luque H., Screen M., McDonald K., Stajich J.M., Mahjneh I., Vihola A., Raheem O., Penttila S., Lehtinen S., Huovinen S., Palmio J., Tasca G., Ricci E., Hackman P. Udd B.Nat. Genet. 44:450-455(2012) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION IN INHIBITION OF HUNTINGTIN AGGREGATION, SUBUNIT, INTERACTION WITH BAG3; HSPB8 AND STUB1, TISSUE SPECIFICITY, SUBCELLULAR LOCATION, VARIANTS LGMD1E ILE-89 AND LEU-93, CHARACTERIZATION OF VARIANTS LGMD1E ILE-89 AND LEU-93. |
| [23] | "Exome sequencing reveals DNAJB6 mutations in dominantly-inherited myopathy." Harms M.B., Sommerville R.B., Allred P., Bell S., Ma D., Cooper P., Lopate G., Pestronk A., Weihl C.C., Baloh R.H. Ann. Neurol. 71:407-416(2012) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LGMD1E LEU-93 AND ARG-96. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AF080569 mRNA. Translation: AAD16010.1. Frameshift. AB015798 mRNA. Translation: BAA88769.1. AB015799 mRNA. Translation: BAA88770.1. AF060703 mRNA. Translation: AAF21257.1. AB014888 mRNA. Translation: BAA32209.1. AF075601 mRNA. Translation: AAD43194.1. CR533498 mRNA. Translation: CAG38529.1. AB209859 mRNA. Translation: BAD93096.1. Different initiation. AK223601 mRNA. Translation: BAD97321.1. AK291953 mRNA. Translation: BAF84642.1. AL136707 mRNA. Translation: CAB66642.1. AC079306 Genomic DNA. Translation: AAS07392.1. AC079306 Genomic DNA. Translation: AAS07393.1. CH236954 Genomic DNA. Translation: EAL23923.1. CH236954 Genomic DNA. Translation: EAL23924.1. CH471149 Genomic DNA. Translation: EAX04570.1. BC000177 mRNA. Translation: AAH00177.1. BC002446 mRNA. Translation: AAH02446.1. |
| IPI | IPI00024523. IPI00098523. IPI00556073. |
| RefSeq | NP_005485.1. NM_005494.2. NP_490647.1. NM_058246.3. |
| UniGene | Hs.188591. Hs.730749. |
3D structure databases | |
| ProteinModelPortal | O75190. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | O75190. 23 interactions. |
| MINT | MINT-4713234. |
PTM databases | |
| PhosphoSite | O75190. |
Proteomic databases | |
| PaxDb | O75190. |
| PRIDE | O75190. |
Protocols and materials databases | |
| DNASU | 10049. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000262177; ENSP00000262177; ENSG00000105993. ENST00000429029; ENSP00000397556; ENSG00000105993. |
| GeneID | 10049. |
| KEGG | hsa:10049. |
| UCSC | uc003wnj.3. human. uc003wnk.3. human. |
Organism-specific databases | |
| CTD | 10049. |
| GeneCards | GC07P157128. |
| HGNC | HGNC:14888. DNAJB6. |
| HPA | CAB004670. HPA024258. |
| MIM | 603511. phenotype. 611332. gene. |
| neXtProt | NX_O75190. |
| Orphanet | 34516. Autosomal dominant limb-girdle muscular dystrophy type 1D. |
| PharmGKB | PA27418. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | COG0484. |
| HOVERGEN | HBG066998. |
| InParanoid | O75190. |
| KO | K09512. |
| OMA | MRRGQNA. |
| PhylomeDB | O75190. |
Gene expression databases | |
| ArrayExpress | O75190. |
| Bgee | O75190. |
| CleanEx | HS_DNAJB6. |
| Genevestigator | O75190. |
| GermOnline | ENSG00000105993. Homo sapiens. |
Family and domain databases | |
| Gene3D | 1.10.287.110. 1 hit. |
| InterPro | IPR001623. DnaJ_domain. IPR018253. DnaJ_domain_CS. [Graphical view] |
| Pfam | PF00226. DnaJ. 1 hit. [Graphical view] |
| PRINTS | PR00625. JDOMAIN. |
| SMART | SM00271. DnaJ. 1 hit. [Graphical view] |
| SUPFAM | SSF46565. DnaJ_N. 1 hit. |
| PROSITE | PS00636. DNAJ_1. 1 hit. PS50076. DNAJ_2. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | DNAJB6. human. |
| GenomeRNAi | 10049. |
| NextBio | 37959. |
| SOURCE | Search... |
Entry information
| Entry name | DNJB6_HUMAN | ||||||||
| Accession | Primary (citable) accession number: O75190 Secondary accession number(s): A4D232 Q9UIK6 | ||||||||
| 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 7 Human chromosome 7: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| 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
