ERP44 endoplasmic reticulum protein 44 [Homo sapiens (human)] - Gene

Summary

Official Symbol: ERP44provided by HGNC
Official Full Name: endoplasmic reticulum protein 44provided by HGNC
Primary source: HGNC:HGNC:18311
See related: Ensembl:ENSG00000023318 MIM:609170; AllianceGenome:HGNC:18311
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: PDIA10; TXNDC4
Summary: This gene encodes a member of the protein disulfide isomerase (PDI) family of endoplasmic reticulum (ER) proteins. It has an inferred N-terminal signal peptide, a catalytically active thioredoxin (TRX) domain, two TRX-like domains and a C-terminal ER-retention sequence. This protein functions as a pH-regulated chaperone of the secretory pathway and likely plays a role in protein quality control at the endoplasmic reticulum - Golgi interface. [provided by RefSeq, Dec 2016]
Expression: Ubiquitous expression in thyroid (RPKM 19.6), placenta (RPKM 16.9) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 9q31.1

Exon count:: 12

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	9	NC_000009.12 (99979185..100099000, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	9	NC_060933.1 (112150810..112270620, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	9	NC_000009.11 (102741467..102861282, complement)

Chromosome 9 - NC_000009.12 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Biogenesis of secretory immunoglobulin M requires intermediate non-native disulfide bonds and engagement of the protein disulfide isomerase ERp44.
Title: Biogenesis of secretory immunoglobulin M requires intermediate non-native disulfide bonds and engagement of the protein disulfide isomerase ERp44.
Protein tyrosine phosphatase receptor type O (PTPRO) knockdown enhances the proliferative, invasive and angiogenic activities of trophoblast cells by suppressing ER resident protein 44 (ERp44) expression in preeclampsia.
Title: Protein tyrosine phosphatase receptor type O (PTPRO) knockdown enhances the proliferative, invasive and angiogenic activities of trophoblast cells by suppressing ER resident protein 44 (ERp44) expression in preeclampsia.
Exosomal ERp44 derived from ER-stressed cells strengthens cisplatin resistance of nasopharyngeal carcinoma.
Title: Exosomal ERp44 derived from ER-stressed cells strengthens cisplatin resistance of nasopharyngeal carcinoma.
The regulatory network of lncRNA DLX6-AS1/miR-149-5p/ERP44 is possibly related to the progression of preeclampsia.
Title: The regulatory network of lncRNA DLX6-AS1/miR-149-5p/ERP44 is possibly related to the progression of preeclampsia.
Endoplasmic reticulum protein 44 (ERp44) forms zinc ions (Zn(2+))-bridged homodimers, which dissociate upon client binding.
Title: Zinc regulates ERp44-dependent protein quality control in the early secretory pathway.
Results show that ERp44 binds the oxidized but not the reduced form of Prx4; the ERp44-Prx4 complex is formed via thiol-disulfide interchange reactions, and its crystal structure reveals a redox-dependent recognition.
Title: Crystal Structure of the ERp44-Peroxiredoxin 4 Complex Reveals the Molecular Mechanisms of Thiol-Mediated Protein Retention.
Endogenous ERp44 is O-glycosylated and secreted by human primary endometrial cells, suggesting possible pathophysiological roles of these processes.
Title: Progressive quality control of secretory proteins in the early secretory compartment by ERp44.
findings indicated that overexpression of miR-101 could downregulate ERp44
Title: MiR-101 regulates apoptosis of trophoblast HTR-8/SVneo cells by targeting endoplasmic reticulum (ER) protein 44 during preeclampsia.
the decrease in 5-HT uptake rates of GDM trophoblast is the consequence of defective insulin signaling, which entraps SERT with ERp44 and impairs its glycosylation.
Title: GDM-associated insulin deficiency hinders the dissociation of SERT from ERp44 and down-regulates placental 5-HT uptake.
Data indicate that protein disulfide isomerase (PDI) and ERp44 dynamically localize Ero1alpha and peroxiredoxin 4 in early secretory compartment (ESC).
Title: Dynamic regulation of Ero1α and peroxiredoxin 4 localization in the secretory pathway.

Submit: New GeneRIF Correction See all GeneRIFs (19)

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

EBI GWAS Catalog

Description
Genome-wide association study of pre-eclampsia detects novel maternal single nucleotide polymorphisms and copy-number variants in subsets of the Hyperglycemia and Adverse Pregnancy Outcome (HAPO) study cohort. EBI GWAS Catalog EBI GWAS CatalogPubMed

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Protein interactions

Protein	Gene	Interaction	Pubs
Envelope surface glycoprotein gp120	env	HIV-1 gp120 is identified to have a physical interaction with endoplasmic reticulum protein 44 (ERP44) in human HEK293 and/or Jurkat cell lines by using affinity tagging and purification mass spectrometry analyses	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

SHGC-57144 (e-PCR)
- UniSTS:66565

A004T01 (e-PCR)
- UniSTS:8218

STS-R74235 (e-PCR)
- UniSTS:15176

A007D04 (e-PCR)
- UniSTS:17839

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein disulfide isomerase activity	IBA Inferred from Biological aspect of Ancestor more info
enables protein disulfide isomerase activity	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in cell redox homeostasis	TAS Traceable Author Statement more info	PubMed
involved_in glycoprotein metabolic process	IDA Inferred from Direct Assay more info	PubMed
involved_in protein folding	IBA Inferred from Biological aspect of Ancestor more info
involved_in protein folding	IDA Inferred from Direct Assay more info	PubMed
involved_in response to endoplasmic reticulum stress	IDA Inferred from Direct Assay more info	PubMed
involved_in response to unfolded protein	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
located_in cell surface	IDA Inferred from Direct Assay more info	PubMed
located_in endoplasmic reticulum lumen	IDA Inferred from Direct Assay more info	PubMed
is_active_in endoplasmic reticulum membrane	IBA Inferred from Biological aspect of Ancestor more info
located_in endoplasmic reticulum membrane	IDA Inferred from Direct Assay more info	PubMed
is_active_in endoplasmic reticulum-Golgi intermediate compartment	IBA Inferred from Biological aspect of Ancestor more info
located_in endoplasmic reticulum-Golgi intermediate compartment	IDA Inferred from Direct Assay more info	PubMed
located_in extracellular exosome	HDA more info	PubMed
located_in extracellular region	TAS Traceable Author Statement more info
located_in specific granule lumen	TAS Traceable Author Statement more info

General protein information

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Preferred Names: endoplasmic reticulum resident protein 44

Names: ER protein 44; endoplasmic reticulum resident protein 44 kDa; epididymis secretory sperm binding protein; protein disulfide isomerase family A, member 10; thioredoxin domain containing 4 (endoplasmic reticulum); thioredoxin domain-containing protein 4

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.

mRNA and Protein(s)

NM_015051.3 → NP_055866.1 endoplasmic reticulum resident protein 44 precursor

See identical proteins and their annotated locations for NP_055866.1

Status: VALIDATED

Source sequence(s)

AB011145, AL358937, BQ881761

Consensus CDS

CCDS35082.1

UniProtKB/Swiss-Prot

O60319, Q4VXC1, Q5VWZ7, Q6UW14, Q8WX67, Q9BS26

UniProtKB/TrEMBL

A0A384MEE7, A0A8I5KW59

Related

ENSP00000262455.6, ENST00000262455.7

Conserved Domains (3) summary

cd02996
Location:29 → 136

PDI_a_ERp44; PDIa family, endoplasmic reticulum protein 44 (ERp44) subfamily; ERp44 is an ER-resident protein, induced during stress, involved in thiol-mediated ER retention. It contains an N-terminal TRX domain, similar to that of PDIa, with a CXFS motif followed by ...

cd03070
Location:144 → 234

PDI_b_ERp44; PDIb family, ERp44 subfamily, first redox inactive TRX-like domain b; ERp44 is an endoplasmic reticulum (ER)-resident protein, induced during stress, involved in thiol-mediated ER retention. It contains an N-terminal TRX domain with a CXFS motif followed ...

cd03072
Location:245 → 355

PDI_b'_ERp44; PDIb' family, ERp44 subfamily, second redox inactive TRX-like domain b'; ERp44 is an endoplasmic reticulum (ER)-resident protein, induced during stress, involved in thiol-mediated ER retention. It contains an N-terminal TRX domain with a CXFS motif ...