SSQ1 Hsp70 family ATPase SSQ1 [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: SSQ1
Official Full Name: Hsp70 family ATPase SSQ1
Primary source: SGD:S000004361
Locus tag: YLR369W
See related: AllianceGenome:SGD:S000004361; FungiDB:YLR369W; VEuPathDB:YLR369W
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Also known as: SSC2; SSH1
Summary: Enables ATP hydrolysis activity and unfolded protein binding activity. Involved in intracellular iron ion homeostasis; iron-sulfur cluster assembly; and protein maturation by [2Fe-2S] cluster transfer. Located in mitochondrial matrix. Is active in mitochondrion. Orthologous to human HSPA13 (heat shock protein family A (Hsp70) member 13). [provided by Alliance of Genome Resources, Dec 2024]
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Genomic context

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See SSQ1 in Genome Data Viewer

Location:: chromosome: XII

Exon count:: 1

Sequence:: Chromosome: XII; NC_001144.5 (859552..861525)

Chromosome XII - NC_001144.5 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001144.5

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Data show that mitochondrial Hsp70 chaperone Ssq1 interacts with the monothiol glutaredoxin 5 (Grx5) at a binding site different from that of Isu1.
Title: The mitochondrial Hsp70 chaperone Ssq1 facilitates Fe/S cluster transfer from Isu1 to Grx5 by complex formation.
the induction of the zim17 mutant phenotype leads to strong import defects for Ssc1-dependent matrix-targeted precursor proteins that correlate with a significantly reduced binding of newly imported substrate proteins to Ssc1.
Title: The functional interaction of mitochondrial Hsp70s with the escort protein Zim17 is critical for Fe/S biogenesis and substrate interaction at the inner membrane preprotein translocase.
Ssq1p/Jac1p/Mge1p are not important for Fe/S cluster synthesis on Isu1p
Title: The Hsp70 chaperone Ssq1p is dispensable for iron-sulfur cluster formation on the scaffold protein Isu1p.
formation of a Jac1-Isu1 complex can overcome a lowered affinity of Ssq1 for Isu in vivo as well as in vitro
Title: Compensation for a defective interaction of the hsp70 ssq1 with the mitochondrial Fe-S cluster scaffold isu.
Description of the role of ssq1/ssc2 in maturation of yeast frataxin (Yfh1p).
Title: Mt-Hsp70 homolog, Ssc2p, required for maturation of yeast frataxin and mitochondrial iron homeostasis.
Initial description of SSH1 (also referred to as SSC2 and SSQ1) as a mitochondrial heat shock protein 70 (HSP70) of yeast. [SSH1]
Title: The cold sensitivity of a mutant of Saccharomyces cerevisiae lacking a mitochondrial heat shock protein 70 is suppressed by loss of mitochondrial DNA.

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Pathways from PubChem

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Homology

Orthologs from OrthoDB

Gene Ontology Provided by SGD

Function	Evidence Code	Pubs
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables ATP hydrolysis activity	IBA Inferred from Biological aspect of Ancestor more info
enables ATP hydrolysis activity	IDA Inferred from Direct Assay more info	PubMed
enables ATP-dependent protein folding chaperone	IEA Inferred from Electronic Annotation more info
enables heat shock protein binding	IBA Inferred from Biological aspect of Ancestor more info
enables hydrolase activity	IEA Inferred from Electronic Annotation more info
enables protein folding chaperone	IBA Inferred from Biological aspect of Ancestor more info
enables unfolded protein binding	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in chaperone cofactor-dependent protein refolding	IBA Inferred from Biological aspect of Ancestor more info
involved_in intracellular iron ion homeostasis	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in iron-sulfur cluster assembly	IBA Inferred from Biological aspect of Ancestor more info
involved_in iron-sulfur cluster assembly	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein maturation by [2Fe-2S] cluster transfer	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein maturation by iron-sulfur cluster transfer	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein refolding	IBA Inferred from Biological aspect of Ancestor more info

Component	Evidence Code	Pubs
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrial matrix	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrial matrix	IEA Inferred from Electronic Annotation more info
located_in mitochondrion	HDA more info	PubMed
is_active_in mitochondrion	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrion	IEA Inferred from Electronic Annotation more info
is_active_in mitochondrion	IMP Inferred from Mutant Phenotype more info	PubMed

General protein information

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Preferred Names: Hsp70 family ATPase SSQ1

NP_013473.1

EC 3.6.4.10

Mitochondrial hsp70-type molecular chaperone; required for assembly of iron/sulfur clusters into proteins at a step after cluster synthesis; involved in maturation of Grx5p and Yfh1p, which is a homolog of human frataxin implicated in Friedreich's ataxia

NCBI Reference Sequences (RefSeq)

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Genome Annotation

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference assembly

Genomic

NC_001144.5 Reference assembly

Range

859552..861525

Download

GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

NM_001182258.1 → NP_013473.1 TPA: Hsp70 family ATPase SSQ1 [Saccharomyces cerevisiae S288C]

See identical proteins and their annotated locations for NP_013473.1

Status: REVIEWED

UniProtKB/Swiss-Prot

D6VZ06, Q05931

UniProtKB/TrEMBL

A7A1P6

Conserved Domains (1) summary

PRK00290
Location:29 → 656

dnaK; molecular chaperone DnaK; Provisional