ISCA1 iron-sulfur cluster assembly 1 [Homo sapiens (human)] - Gene

Summary

Official Symbol: ISCA1provided by HGNC
Official Full Name: iron-sulfur cluster assembly 1provided by HGNC
Primary source: HGNC:HGNC:28660
See related: Ensembl:ENSG00000135070 MIM:611006; AllianceGenome:HGNC:28660
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: ISA1; HBLD2; MMDS5; hIscA; hIscA1
Summary: ISCA1 is a mitochondrial protein involved in the biogenesis and assembly of iron-sulfur clusters, which play a role in electron-transfer reactions (Cozar-Castellano et al., 2004 [PubMed 15262227]).[supplied by OMIM, Mar 2008]
Expression: Ubiquitous expression in adrenal (RPKM 27.0), brain (RPKM 25.4) and 25 other tissues See more
Orthologs: all
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Genomic context

Location:: 9q21.33

Exon count:: 4

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	9	NC_000009.12 (86264546..86282538, complement)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	9	NC_060933.1 (98415772..98433767, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	9	NC_000009.11 (88879461..88897453, complement)

Chromosome 9 - NC_000009.12 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

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Expression

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See details

Project title: Tissue-specific circular RNA induction during human fetal development
Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
BioProject: PRJNA270632
Publication: PMID 26076956
Analysis date: Mon Apr 2 22:54:59 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Copper exerts cytotoxicity through inhibition of iron-sulfur cluster biogenesis on ISCA1/ISCA2/ISCU assembly proteins.
Title: Copper exerts cytotoxicity through inhibition of iron-sulfur cluster biogenesis on ISCA1/ISCA2/ISCU assembly proteins.
Identification of ISCA1 as novel immunological and prognostic biomarker for bladder cancer.
Title: Identification of ISCA1 as novel immunological and prognostic biomarker for bladder cancer.
ISCA1 Orchestrates ISCA2 and NFU1 in the Maturation of Human Mitochondrial [4Fe-4S] Proteins.
Title: ISCA1 Orchestrates ISCA2 and NFU1 in the Maturation of Human Mitochondrial [4Fe-4S] Proteins.
Expanding the phenotype of mitochondrial disease: Novel pathogenic variant in ISCA1 leading to instability of the iron-sulfur cluster in the protein.
Title: Expanding the phenotype of mitochondrial disease: Novel pathogenic variant in ISCA1 leading to instability of the iron-sulfur cluster in the protein.
hHmozygous p.(Glu87Lys) variant in ISCA1 is associated with a multiple mitochondrial dysfunctions syndrome
Title: A commentary on homozygous p.(Glu87Lys) variant in ISCA1 is associated with a multiple mitochondrial dysfunctions syndrome.
the phenotype observed in all affected subjects with the ISCA1 pathogenic variant is similar to that previously described in all four types of multiple mitochondrial dysfunctions syndromes.
Title: Homozygous p.(Glu87Lys) variant in ISCA1 is associated with a multiple mitochondrial dysfunctions syndrome.
The structural plasticity of the dimeric state of the [2Fe-2S] bound form of human GRX5 is the crucial factor that allows an efficient cluster transfer to the partner proteins human ISCA1 and ISCA2 by a specific protein-protein recognition mechanism.
Title: [2Fe-2S] cluster transfer in iron-sulfur protein biogenesis.
The data presented here show that the Isu1 suppressor mimics the frataxin effects on Nfs1, explaining the bypassing activity.
Title: Frataxin directly stimulates mitochondrial cysteine desulfurase by exposing substrate-binding sites, and a mutant Fe-S cluster scaffold protein with frataxin-bypassing ability acts similarly.
ISCA1, ISCA2, and IBA57 were depleted by RNA interference. Depleted cells contained massively swollen and enlarged mitochondria that were virtually devoid of cristae membranes, demonstrating the importance of these proteins for mitochondrial biogenesis.
Title: The human mitochondrial ISCA1, ISCA2, and IBA57 proteins are required for [4Fe-4S] protein maturation.
Observational study of gene-disease association. (HuGE Navigator)
Title: Genetic variants in nuclear-encoded mitochondrial genes influence AIDS progression.

Submit: New GeneRIF Correction See all GeneRIFs (14)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Associated conditions

Description	Tests
Multiple mitochondrial dysfunctions syndrome 5 MedGen: C4539919 OMIM: 617613 GeneReviews: ISCA1-Related Multiple Mitochondrial Dysfunctions Syndrome	Compare labs

Variation

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See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

RH66922 (e-PCR)
- UniSTS:88376

G34941 (e-PCR)
- UniSTS:117653

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables 2 iron, 2 sulfur cluster binding	IBA Inferred from Biological aspect of Ancestor more info
enables iron-sulfur cluster binding	IEA Inferred from Electronic Annotation more info
enables metal ion binding	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in iron-sulfur cluster assembly	IBA Inferred from Biological aspect of Ancestor more info
involved_in iron-sulfur cluster assembly	IEA Inferred from Electronic Annotation more info
involved_in protein maturation	IBA Inferred from Biological aspect of Ancestor more info
involved_in protein maturation	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
part_of mitochondrial [4Fe-4S] assembly complex	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrial matrix	TAS Traceable Author Statement more info
located_in mitochondrion	HTP more info	PubMed
is_active_in mitochondrion	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrion	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrion	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: iron-sulfur cluster assembly 1 homolog, mitochondrial

Names: HESB like domain containing 2; HESB-like domain-containing protein 2; iron-sulfur assembly protein IscA

NP_112202.2

EC 2.7.7.52

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.