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Aliases for HSCB Gene

Aliases for HSCB Gene

  • HscB Mitochondrial Iron-Sulfur Cluster Cochaperone 2 3 5
  • DnaJ (Hsp40) Homolog, Subfamily C, Member 20 2 3
  • DNAJC20 3 4
  • HSC20 3 4
  • Iron-Sulfur Cluster Co-Chaperone Protein HscB, Mitochondrial 3
  • HscB Iron-Sulfur Cluster Co-Chaperone Homolog (E. Coli) 2
  • HscB Mitochondrial Iron-Sulfur Cluster Co-Chaperone 3
  • HscB Iron-Sulfur Cluster Co-Chaperone Homolog 3
  • DnaJ Homolog Subfamily C Member 20 4
  • J-Type Co-Chaperone HSC20 3
  • JAC1 3

External Ids for HSCB Gene

Previous GeneCards Identifiers for HSCB Gene

  • GC22P027468
  • GC22P029138
  • GC22P012103

Summaries for HSCB Gene

Entrez Gene Summary for HSCB Gene

  • This gene encodes a DnaJ-type co-chaperone and member of the heat shock cognate B (HscB) family of proteins. The encoded protein plays a role in the synthesis of iron-sulfur clusters, protein cofactors that are involved in the redox reactions of mitochondrial electron transport and other processes. Cells in which this gene is knocked down exhibit reduced activity of iron-sulfur cluster-dependent enzymes including succinate dehydrogenase and aconitase. The encoded protein may stimulate the ATPase activity of the mitochondrial stress-70 protein. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

GeneCards Summary for HSCB Gene

HSCB (HscB Mitochondrial Iron-Sulfur Cluster Cochaperone) is a Protein Coding gene. Diseases associated with HSCB include X-Linked Sideroblastic Anemia With Ataxia. Among its related pathways are Transport to the Golgi and subsequent modification and Mitochondrial protein import. GO annotations related to this gene include chaperone binding.

UniProtKB/Swiss-Prot for HSCB Gene

  • Acts as a co-chaperone in iron-sulfur cluster assembly in mitochondria.

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for HSCB Gene

Genomics for HSCB Gene

Regulatory Elements for HSCB Gene

Enhancers for HSCB Gene
GeneHancer Identifier Enhancer Score Enhancer Sources Gene-Enhancer Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Gene Targets for Enhancer
- Elite enhancer/Elite enhancer-gene association

Enhancers around HSCB on UCSC Golden Path with GeneCards custom track

Promoters for HSCB Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters

Genomic Location for HSCB Gene

28,742,001 bp from pter
28,757,518 bp from pter
15,518 bases
Plus strand

Genomic View for HSCB Gene

Genes around HSCB on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
HSCB Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for HSCB Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for HSCB Gene

Proteins for HSCB Gene

  • Protein details for HSCB Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Iron-sulfur cluster co-chaperone protein HscB, mitochondrial
    Protein Accession:
    Secondary Accessions:
    • Q9BWS7

    Protein attributes for HSCB Gene

    235 amino acids
    Molecular mass:
    27422 Da
    Quaternary structure:
    • Interacts with ISCU and HSPA9.

    Three dimensional structures from OCA and Proteopedia for HSCB Gene

neXtProt entry for HSCB Gene

Post-translational modifications for HSCB Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for HSCB Gene

No data available for DME Specific Peptides for HSCB Gene

Domains & Families for HSCB Gene

Gene Families for HSCB Gene

Protein Domains for HSCB Gene

Suggested Antigen Peptide Sequences for HSCB Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Contains 1 J domain.
  • Belongs to the HscB family.
  • Contains 1 J domain.
  • Belongs to the HscB family.
genes like me logo Genes that share domains with HSCB: view

Function for HSCB Gene

Molecular function for HSCB Gene

UniProtKB/Swiss-Prot Function:
Acts as a co-chaperone in iron-sulfur cluster assembly in mitochondria.

Gene Ontology (GO) - Molecular Function for HSCB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0003674 molecular_function ND --
GO:0005515 protein binding IPI 20668094
GO:0046872 metal ion binding IEA --
GO:0051087 chaperone binding IBA --
genes like me logo Genes that share ontologies with HSCB: view
genes like me logo Genes that share phenotypes with HSCB: view

Animal Model Products

CRISPR Products

miRNA for HSCB Gene

miRTarBase miRNAs that target HSCB

Inhibitory RNA Products

Clone Products

  • Addgene plasmids for HSCB

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for HSCB Gene

Localization for HSCB Gene

Subcellular locations from UniProtKB/Swiss-Prot for HSCB Gene

Cytoplasm. Mitochondrion.

Subcellular locations from

Jensen Localization Image for HSCB Gene COMPARTMENTS Subcellular localization image for HSCB gene
Compartment Confidence
mitochondrion 5
nucleus 5
cytosol 3
cytoskeleton 2
plasma membrane 2

Gene Ontology (GO) - Cellular Components for HSCB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005634 nucleus IDA --
GO:0005737 cytoplasm IDA 20668094
GO:0005739 mitochondrion TAS 12938016
genes like me logo Genes that share ontologies with HSCB: view

Pathways & Interactions for HSCB Gene

genes like me logo Genes that share pathways with HSCB: view

Pathways by source for HSCB Gene

2 Reactome pathways for HSCB Gene

UniProtKB/Swiss-Prot Q8IWL3-HSC20_HUMAN

  • Pathway: Cofactor biosynthesis; iron-sulfur cluster biosynthesis.

Gene Ontology (GO) - Biological Process for HSCB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006457 protein folding IEA --
GO:0016226 iron-sulfur cluster assembly IMP 20668094
GO:0051259 protein oligomerization IEA --
genes like me logo Genes that share ontologies with HSCB: view

No data available for SIGNOR curated interactions for HSCB Gene

Drugs & Compounds for HSCB Gene

(1) Additional Compounds for HSCB Gene - From: HMDB

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
  • Armco iron
  • Carbonyl iron
  • FE
  • Ferrovac e
  • Hematite
genes like me logo Genes that share compounds with HSCB: view

Transcripts for HSCB Gene

Unigene Clusters for HSCB Gene

HscB iron-sulfur cluster co-chaperone homolog (E. coli):
Representative Sequences:

CRISPR Products

Inhibitory RNA Products

Clone Products

  • Addgene plasmids for HSCB

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for HSCB Gene

ExUns: 1a · 1b ^ 2a · 2b ^ 3 ^ 4 ^ 5a · 5b
SP1: -

Relevant External Links for HSCB Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for HSCB Gene

mRNA expression in normal human tissues for HSCB Gene

Protein differential expression in normal tissues from HIPED for HSCB Gene

This gene is overexpressed in Heart (27.1).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MaxQB, and MOPED for HSCB Gene

Protein tissue co-expression partners for HSCB Gene

NURSA nuclear receptor signaling pathways regulating expression of HSCB Gene:


SOURCE GeneReport for Unigene cluster for HSCB Gene:


mRNA Expression by UniProt/SwissProt for HSCB Gene:

Tissue specificity: Expressed in lung, brain, stomach, spleen, ovary, testis, liver, muscle and heart.
genes like me logo Genes that share expression patterns with HSCB: view

Primer Products

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery and mRNA differential expression in normal tissues for HSCB Gene

Orthologs for HSCB Gene

This gene was present in the common ancestor of eukaryotes.

Orthologs for HSCB Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia HSCB 34
  • 87.52 (n)
  • 85.11 (a)
  • 85 (a)
(Canis familiaris)
Mammalia HSCB 34
  • 88.79 (n)
  • 85.53 (a)
  • 86 (a)
(Mus musculus)
Mammalia Hscb 34
  • 80.48 (n)
  • 73.5 (a)
Hscb 16
Hscb 35
  • 74 (a)
(Pan troglodytes)
Mammalia HSCB 34
  • 99.43 (n)
  • 98.3 (a)
  • 98 (a)
(Rattus norvegicus)
Mammalia Hscb 34
  • 79.91 (n)
  • 73.5 (a)
(Monodelphis domestica)
Mammalia HSCB 35
  • 63 (a)
(Ornithorhynchus anatinus)
Mammalia HSCB 35
  • 71 (a)
(Gallus gallus)
Aves HSCB 34
  • 60.21 (n)
  • 54.05 (a)
  • 54 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia hscb 34
  • 56.87 (n)
  • 46.93 (a)
(Danio rerio)
Actinopterygii si:ch211-207k7.4 34
  • 54.53 (n)
  • 46.74 (a)
  • 33 (a)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP004722 34
  • 50.41 (n)
  • 36.45 (a)
fruit fly
(Drosophila melanogaster)
Insecta l(3)72Do 34
  • 44.17 (n)
  • 32.04 (a)
l(3)72Do 35
  • 28 (a)
(Caenorhabditis elegans)
Secernentea dnj-15 34
  • 46.35 (n)
  • 32.62 (a)
dnj-15 35
  • 29 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes JAC1 35
  • 24 (a)
JAC1 37
thale cress
(Arabidopsis thaliana)
eudicotyledons AT5G06410 34
  • 49.46 (n)
  • 34.41 (a)
(Oryza sativa)
Liliopsida Os12g0456200 34
  • 46.81 (n)
  • 37.16 (a)
sea squirt
(Ciona savignyi)
Ascidiacea CSA.1107 35
  • 29 (a)
Species where no ortholog for HSCB was found in the sources mined by GeneCards:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)

Evolution for HSCB Gene

Gene Tree for HSCB (if available)
Gene Tree for HSCB (if available)

Paralogs for HSCB Gene

No data available for Paralogs for HSCB Gene

Variants for HSCB Gene

Sequence variations from dbSNP and Humsavar for HSCB Gene

SNP ID Clin Chr 22 pos Sequence Context AA Info Type
VAR_048916 -
rs17884212 - 28,745,929(-) ATTTC(C/T)ATGAG intron-variant, nc-transcript-variant, reference, missense
rs714191 -- 28,749,423(+) taagc(C/T)atcta intron-variant
rs717869 -- 28,749,689(+) GGGAC(C/T)GTCAG intron-variant
rs5997391 -- 28,749,551(+) catgt(C/T)tactt intron-variant

Structural Variations from Database of Genomic Variants (DGV) for HSCB Gene

Variant ID Type Subtype PubMed ID
esv3647518 CNV loss 21293372
esv3647519 CNV loss 21293372
esv3647520 CNV loss 21293372
nsv1064079 CNV gain 25217958
nsv834169 CNV loss 17160897
nsv9895 CNV gain+loss 18304495

Variation tolerance for HSCB Gene

Residual Variation Intolerance Score: 49.6% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 2.82; 47.75% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for HSCB Gene

SNPedia medical, phenotypic, and genealogical associations of SNPs for

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for HSCB Gene

Disorders for HSCB Gene

MalaCards: The human disease database

(1) MalaCards diseases for HSCB Gene - From: DISEASES

Disorder Aliases PubMed IDs
x-linked sideroblastic anemia with ataxia
  • anemia sideroblastic and spinocerebellar ataxia
- elite association - COSMIC cancer census association via MalaCards
Search HSCB in MalaCards View complete list of genes associated with diseases

Relevant External Links for HSCB

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with HSCB: view

No data available for UniProtKB/Swiss-Prot and Genatlas for HSCB Gene

Publications for HSCB Gene

  1. Identification of a novel candidate gene in the iron-sulfur pathway implicated in ataxia-susceptibility: human gene encoding HscB, a J- type co-chaperone. (PMID: 12938016) Sun G. … Vickery L.E. (J. Hum. Genet. 2003) 2 3 4 22 65
  2. Characterization of the human HSC20, an unusual DnaJ type III protein, involved in iron-sulfur cluster biogenesis. (PMID: 20668094) Uhrigshardt H. … Rouault T.A. (Hum. Mol. Genet. 2010) 3 4 65
  3. Genetic variants in nuclear-encoded mitochondrial genes influence AIDS progression. (PMID: 20877624) Hendrickson S.L. … O'Brien S.J. (PLoS ONE 2010) 3 46 65
  4. Structure of human J-type co-chaperone HscB reveals a tetracysteine metal-binding domain. (PMID: 18713742) Bitto E. … Phillips G.N. Jr. (J. Biol. Chem. 2008) 3 4 65
  5. The diversity of the DnaJ/Hsp40 family, the crucial partners for Hsp70 chaperones. (PMID: 16952052) Qiu X.B. … Wang L. (Cell. Mol. Life Sci. 2006) 2 3 65

Products for HSCB Gene

Sources for HSCB Gene

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