PDIA5

gene
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Also known as PDIRFLJ30401

Summary

PDIA5 (protein disulfide isomerase family A member 5, HGNC:24811) is a protein-coding gene on chromosome 3q21.1, encoding Protein disulfide-isomerase A5 (Q14554).

This gene encodes a member of the disulfide isomerase (PDI) family of endoplasmic reticulum (ER) proteins that catalyze protein folding and thiol-disulfide interchange reactions. The encoded protein has an N-terminal ER-signal sequence, three catalytically active thioredoxin (TRX) domains, a TRX-like domain, and a C-terminal ER-retention sequence. The N-terminal TRX-like domain is the primary binding site for the major ER chaperone calreticulin and possibly other proteins and substrates as well. Alternative splicing results in multiple protein- and non-protein-coding transcript variants.

Source: NCBI Gene 10954 — RefSeq curated summary.

At a glance

  • GWAS associations: 13
  • Clinical variants (ClinVar): 112 total
  • Druggable target: yes
  • MANE Select transcript: NM_006810

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:24811
Approved symbolPDIA5
Nameprotein disulfide isomerase family A member 5
Location3q21.1
Locus typegene with protein product
StatusApproved
AliasesPDIR, FLJ30401
Ensembl geneENSG00000065485
Ensembl biotypeprotein_coding
OMIM616942
Entrez10954

Gene structure

Transcript identifiers

Ensembl transcripts: 11 — 5 protein_coding, 4 protein_coding_CDS_not_defined, 2 nonsense_mediated_decay

ENST00000316218, ENST00000467157, ENST00000469649, ENST00000472319, ENST00000484644, ENST00000485208, ENST00000489923, ENST00000495004, ENST00000872609, ENST00000872610, ENST00000933695

RefSeq mRNA: 1 — MANE Select: NM_006810 NM_006810

CCDS: CCDS3020

Canonical transcript exons

ENST00000316218 — 17 exons

ExonStartEnd
ENSE00001078808123110944123111004
ENSE00001078828123130480123130616
ENSE00001149277123116231123116298
ENSE00001866959123067025123067206
ENSE00003462824123106749123106841
ENSE00003469190123150234123150364
ENSE00003486364123161880123162104
ENSE00003493250123146099123146259
ENSE00003497134123102411123102494
ENSE00003500252123102751123102796
ENSE00003501781123145522123145592
ENSE00003516624123089168123089294
ENSE00003553395123092355123092442
ENSE00003590493123161321123161455
ENSE00003590930123124272123124343
ENSE00003662909123124066123124157
ENSE00003679611123154971123155041

Expression profiles

Bgee: expression breadth ubiquitous, 259 present calls, max score 95.65.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 21.2298 / max 347.1718, expressed in 1792 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
3827416.60311739
382734.62671562

Top tissues by expression

284 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
liverUBERON:000210795.65gold quality
right lobe of liverUBERON:000111495.64gold quality
placentaUBERON:000198794.69gold quality
pylorusUBERON:000116694.51gold quality
type B pancreatic cellCL:000016993.93silver quality
stromal cell of endometriumCL:000225592.70gold quality
colonic epitheliumUBERON:000039792.20gold quality
deciduaUBERON:000245091.58gold quality
left adrenal glandUBERON:000123491.06gold quality
left adrenal gland cortexUBERON:003582591.03gold quality
right adrenal glandUBERON:000123391.02gold quality
stomachUBERON:000094590.88gold quality
body of pancreasUBERON:000115090.83gold quality
body of stomachUBERON:000116190.81gold quality
adrenal cortexUBERON:000123590.66gold quality
calcaneal tendonUBERON:000370190.63gold quality
adrenal glandUBERON:000236990.54gold quality
right adrenal gland cortexUBERON:003582790.53gold quality
rectumUBERON:000105290.49gold quality
secondary oocyteCL:000065590.47gold quality
corpus epididymisUBERON:000435990.10gold quality
tibiaUBERON:000097990.02gold quality
cartilage tissueUBERON:000241889.95gold quality
left lobe of thyroid glandUBERON:000112089.86gold quality
pancreasUBERON:000126489.84gold quality
right lobe of thyroid glandUBERON:000111989.78gold quality
bone marrow cellCL:000209289.74gold quality
gall bladderUBERON:000211089.65gold quality
mucosa of sigmoid colonUBERON:000499389.61gold quality
thyroid glandUBERON:000204689.55gold quality

Single-cell (SCXA)

Detected in 5 experiment(s), a significant marker in 3.

ExperimentMarker?Max mean expression
E-MTAB-7316yes19.76
E-ANND-3yes12.75
E-GEOD-137537yes3.73
E-CURD-10no108.12
E-MTAB-4850no10.16

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

32 targeting PDIA5, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-513A-5P100.0069.772465
HSA-MIR-3163100.0077.238605
HSA-MIR-196A-1-3P99.9972.152772
HSA-MIR-27A-3P99.9872.132955
HSA-MIR-27B-3P99.9872.132955
HSA-MIR-998599.9872.112939
HSA-MIR-477599.9875.006394
HSA-MIR-3065-5P99.9771.563281
HSA-MIR-60799.9773.625593
HSA-MIR-3688-3P99.9772.022834
HSA-MIR-590-3P99.9674.346478
HSA-MIR-493-5P99.9672.472382
HSA-MIR-128-3P99.9571.172484
HSA-MIR-216A-3P99.9571.192505
HSA-LET-7C-3P99.9573.422862
HSA-MIR-205-3P99.9269.923165
HSA-MIR-589-3P99.9169.622088
HSA-MIR-806399.9169.763146
HSA-MIR-3529-3P99.9073.553045
HSA-MIR-3681-3P99.8870.462254
HSA-LET-7A-2-3P99.8770.531921
HSA-MIR-612499.8769.783551
HSA-LET-7G-3P99.8570.431929
HSA-MIR-469899.8471.414303
HSA-MIR-6833-5P99.5068.931161
HSA-MIR-892C-5P99.1670.562116
HSA-MIR-224-3P98.9168.421815
HSA-MIR-522-3P98.9168.561817
HSA-MIR-382-3P98.8367.101074
HSA-MIR-3187-3P97.3865.80904

Literature-anchored findings (GeneRIF, showing 9)

  • Three thioredoxin motifs (CXXC) of purified PDIR were found to contribute to its isomerase activity. (PMID:14627699)
  • Protein disulfide isomerases are enzymes that mediate oxidative protein folding in the endoplasmic reticulum. (PMID:20796029)
  • protein disulfide isomerase 5 is deregulated in the mucopolysaccharidoses, although the unfolded protein response is not activated (PMID:22002444)
  • This study demonistrated that Protein disulfide isomerase P5-immunopositive inclusions in patients with Alzheimer’s disease. (PMID:24037032)
  • PDIA5 is a key regulator ATF6alpha-mediated cellular functions in cancer. (PMID:24636989)
  • Data suggest that upon activation of integrins, protein disulfide isomerase (PDI) is released from endothelial cells and forms a disulfide bond complex with alphaVbeta3 integrin. (PMID:29293453)
  • PDIA5 is Correlated With Immune Infiltration and Predicts Poor Prognosis in Gliomas. (PMID:33664747)
  • Pan-Cancer Analysis of the Immunological Role of PDIA5: A Potential Target for Immunotherapy. (PMID:36003400)
  • RUNX1-PDIA5 Axis Promotes Malignant Progression of Glioblastoma by Regulating CCAR1 Protein Expression. (PMID:39247813)

Cross-species orthologs

6 orthologs

OrganismSymbolGene ID
danio_reriopdia5ENSDARG00000069242
mus_musculusPdia5ENSMUSG00000022844
rattus_norvegicusPdia5ENSRNOG00000032327
drosophila_melanogasterCG9302FBGN0032514
caenorhabditis_elegansWBGENE00003962
caenorhabditis_elegansM04D5.1WBGENE00014807

Paralogs (13): ERP44 (ENSG00000023318), TMX4 (ENSG00000125827), ERP27 (ENSG00000139055), TMX1 (ENSG00000139921), PDIA6 (ENSG00000143870), TXNDC11 (ENSG00000153066), PDIA4 (ENSG00000155660), TMX3 (ENSG00000166479), PDIA3 (ENSG00000167004), PDILT (ENSG00000169340), PDIA2 (ENSG00000185615), P4HB (ENSG00000185624), TXNDC5 (ENSG00000239264)

Protein

Protein identifiers

Protein disulfide-isomerase A5Q14554 (reviewed: Q14554)

Alternative names: Protein disulfide isomerase-related protein

All UniProt accessions (3): Q14554, C9JY10, H7C4F9

UniProt curated annotations — full annotation on UniProt →

Subunit / interactions. Interacts with CALR (via P-domain).

Subcellular location. Endoplasmic reticulum lumen.

Similarity. Belongs to the protein disulfide isomerase family.

Isoforms (2)

UniProt IDNamesCanonical?
Q14554-11yes
Q14554-22

RefSeq proteins (1): NP_006801* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR013766Thioredoxin_domainDomain
IPR017937Thioredoxin_CSConserved_site
IPR036249Thioredoxin-like_sfHomologous_superfamily
IPR041865PDI_b_PDIR_NDomain
IPR046374PDI_a_PDIRDomain
IPR051063PDIFamily

Pfam: PF00085

UniProt features (22 total): helix 4, strand 4, disulfide bond 4, domain 3, splice variant 2, signal peptide 1, chain 1, sequence variant 1, turn 1, short sequence motif 1

Structure

Experimental structures (PDB)

1 structures.

PDBMethodResolution (Å)
4I6XX-RAY DIFFRACTION1.5

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q14554-F189.490.74

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Disulfide bonds (4): 85–94, 182–185, 305–308, 426–429

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

IDPathway
R-HSA-381038XBP1(S) activates chaperone genes

MSigDB gene sets: 191 (showing top): REACTOME_UNFOLDED_PROTEIN_RESPONSE_UPR, GRUETZMANN_PANCREATIC_CANCER_DN, TGCGCANK_UNKNOWN, GRAESSMANN_APOPTOSIS_BY_SERUM_DEPRIVATION_DN, GGGTGGRR_PAX4_03, GOBP_GENERATION_OF_PRECURSOR_METABOLITES_AND_ENERGY, BROWNE_HCMV_INFECTION_48HR_DN, GOBP_PROTEIN_MATURATION, GOBP_ELECTRON_TRANSPORT_CHAIN, GOBP_PROTEIN_FOLDING, BROWN_MYELOID_CELL_DEVELOPMENT_DN, chr3q21, IVANOVA_HEMATOPOIESIS_EARLY_PROGENITOR, SPIELMAN_LYMPHOBLAST_EUROPEAN_VS_ASIAN_DN, MILI_PSEUDOPODIA_CHEMOTAXIS_DN

GO Biological Process (2): protein folding (GO:0006457), electron transport chain (GO:0022900)

GO Molecular Function (5): protein disulfide isomerase activity (GO:0003756), protein-disulfide reductase activity (GO:0015035), oxidoreductase activity (GO:0016491), protein binding (GO:0005515), isomerase activity (GO:0016853)

GO Cellular Component (3): endoplasmic reticulum (GO:0005783), endoplasmic reticulum lumen (GO:0005788), endoplasmic reticulum membrane (GO:0005789)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
IRE1alpha activates chaperones1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
catalytic activity, acting on a protein2
catalytic activity2
cellular process1
protein maturation1
generation of precursor metabolites and energy1
intramolecular oxidoreductase activity, transposing S-S bonds1
disulfide oxidoreductase activity1
binding1
cytoplasm1
endomembrane system1
intracellular membrane-bounded organelle1
endoplasmic reticulum1
intracellular organelle lumen1
organelle membrane1
nuclear outer membrane-endoplasmic reticulum membrane network1
endoplasmic reticulum subcompartment1

Protein interactions and networks

STRING

1719 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
PDIA5ATF6P18850701
PDIA5ERP27Q96DN0558
PDIA5TXNDC12O95881548
PDIA5ERP29P30040519
PDIA5HSPA5P11021488
PDIA5ERO1BQ86YB8478
PDIA5HYOU1Q9Y4L1475
PDIA5TMX4Q9H1E5463
PDIA5ABHD5Q8WTS1437
PDIA5CNDP2Q96KP4431
PDIA5SEC22AQ96IW7429
PDIA5DNAJB9Q9UBS3423
PDIA5TMX2Q9Y320417
PDIA5AGR3Q8TD06415
PDIA5MARCOQ9UEW3411

IntAct

94 interactions, top by confidence:

ABTypeScore
TRDNTMEM223psi-mi:“MI:0914”(association)0.640
MUCL1PDIA5psi-mi:“MI:0914”(association)0.640
KRTAP10-7PDIA5psi-mi:“MI:0915”(physical association)0.560
PDIA5psi-mi:“MI:0915”(physical association)0.560
MDFIPDIA5psi-mi:“MI:0915”(physical association)0.560
PDIA5psi-mi:“MI:0915”(physical association)0.560
PDIA5MDFIpsi-mi:“MI:0915”(physical association)0.560
ANTXR1POTEFpsi-mi:“MI:0914”(association)0.530
LGMNATG7psi-mi:“MI:0914”(association)0.530
NENFBLVRBpsi-mi:“MI:0914”(association)0.530
RNASET2PDIA5psi-mi:“MI:0914”(association)0.530
CST6CTSVpsi-mi:“MI:0914”(association)0.530
CCL22PLXNA2psi-mi:“MI:0914”(association)0.530
CRPQSOX1psi-mi:“MI:0914”(association)0.530
ANTXR1WFS1psi-mi:“MI:0914”(association)0.530
TOR1AIP1TXNpsi-mi:“MI:0914”(association)0.530

BioGRID (144): PDIA5 (Two-hybrid), KRTAP10-7 (Two-hybrid), KRTAP10-3 (Two-hybrid), PDIA5 (Affinity Capture-RNA), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS), PDIA5 (Affinity Capture-MS)

ESM2 similar proteins: A2VE29, A6QLU8, D3Z6P0, H2N4I1, O00391, O08841, P04785, P05307, P07237, P08003, P09102, P09103, P13667, P21195, P30040, P38657, P38659, P57759, P81628, P97278, P97346, Q0VCM5, Q13087, Q14554, Q29052, Q2HWU2, Q2KIL5, Q499T2, Q4VIT4, Q503L9, Q5E936, Q5I0H9, Q5R5B6, Q5RCH2, Q5WA72, Q61702, Q67IX6, Q6DKJ4, Q6GM16, Q6IUU3

Diamond homologs: A0A8M1N5Y4, D3Z6P0, D4B2L8, G4NFB7, H2N4I1, O00391, O08841, O13704, O13811, O22263, O48773, P00275, P04785, P05307, P07237, P08003, P09102, P09103, P0A4L1, P0A4L2, P11598, P12243, P12865, P13667, P17967, P21195, P23400, P27773, P29828, P30101, P32474, P34329, P38657, P38658, P38659, P38660, P38661, P46843, P52230, P52588

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 106 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Innate Immune System124.3×1e-02

Disease & clinical

Clinical variants and AI predictions

ClinVar

112 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance84
Likely benign2
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

3487 predictions. Top by Δscore:

VariantEffectΔscore
3:123083637:G:GTdonor_gain1.0000
3:123102495:G:GGdonor_gain1.0000
3:123106747:A:AGacceptor_gain1.0000
3:123106748:G:GAacceptor_gain1.0000
3:123106748:GTCC:Gacceptor_gain1.0000
3:123106838:AAAGG:Adonor_loss1.0000
3:123106839:AAGG:Adonor_loss1.0000
3:123106840:AG:Adonor_loss1.0000
3:123106841:GGTA:Gdonor_loss1.0000
3:123106842:G:Tdonor_loss1.0000
3:123106843:T:Gdonor_loss1.0000
3:123111005:G:GGdonor_gain1.0000
3:123124154:T:Gdonor_gain1.0000
3:123124154:T:TGdonor_gain1.0000
3:123124156:GA:Gdonor_gain1.0000
3:123124158:G:GGdonor_gain1.0000
3:123124262:C:CAacceptor_gain1.0000
3:123124262:C:Gacceptor_gain1.0000
3:123124340:AGAA:Adonor_gain1.0000
3:123124341:GAA:Gdonor_gain1.0000
3:123124341:GAAG:Gdonor_gain1.0000
3:123124344:G:GGdonor_gain1.0000
3:123124345:T:Adonor_loss1.0000
3:123130612:CCCAT:Cdonor_gain1.0000
3:123130617:G:GGdonor_gain1.0000
3:123145518:ACAG:Aacceptor_gain1.0000
3:123145519:CAGGG:Cacceptor_loss1.0000
3:123145520:AG:Aacceptor_gain1.0000
3:123145521:GG:Gacceptor_gain1.0000
3:123145521:GGGT:Gacceptor_gain1.0000

AlphaMissense

3437 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
3:123106791:T:AW144R0.996
3:123106791:T:CW144R0.996
3:123106793:G:CW144C0.995
3:123106793:G:TW144C0.995
3:123089274:T:CL50P0.993
3:123150347:T:AV419D0.993
3:123130599:T:AV298D0.992
3:123106819:T:AV153D0.989
3:123116275:G:CA196P0.988
3:123089257:A:CR44S0.987
3:123089257:A:TR44S0.987
3:123102773:T:GY122D0.987
3:123130605:T:CF300S0.986
3:123146115:C:AA333E0.986
3:123146117:G:CA334P0.986
3:123146121:T:AV335D0.986
3:123102433:T:AC94S0.985
3:123102433:T:CC94R0.985
3:123102434:G:CC94S0.985
3:123102490:T:GY113D0.985
3:123106761:T:CF134L0.984
3:123106763:T:AF134L0.984
3:123106763:T:GF134L0.984
3:123130519:G:CW271C0.984
3:123130519:G:TW271C0.984
3:123130596:T:CL297P0.984
3:123106750:C:TS130F0.983
3:123124073:C:AA206D0.983
3:123161334:C:AA453D0.983
3:123116242:T:CC185R0.982

dbSNP variants (sampled 300 via entrez): RS1000014097 (3:123154316 C>T), RS1000070658 (3:123160282 C>G,T), RS1000093544 (3:123119737 G>A), RS1000110187 (3:123149258 G>A), RS1000147126 (3:123098580 G>A), RS1000165896 (3:123107557 A>G), RS1000238439 (3:123107990 G>A), RS1000245816 (3:123071955 A>G,T), RS1000255189 (3:123154625 C>T), RS1000359369 (3:123101190 A>G), RS1000381945 (3:123095855 G>A), RS1000382957 (3:123136945 T>C), RS1000428022 (3:123148834 G>A), RS1000467757 (3:123090901 C>G), RS1000484562 (3:123160099 G>A)

Disease associations

OMIM: gene MIM:616942 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

13 associations (top):

StudyTraitp-value
GCST001337_12Platelet count4.000000e-09
GCST003194_30Fibrinogen levels2.000000e-08
GCST004121_24Fibrinogen levels8.000000e-09
GCST004122_17Fibrinogen levels1.000000e-07
GCST004442_16Interleukin-17 levels5.000000e-10
GCST004599_79Mean platelet volume1.000000e-32
GCST004603_252Platelet count2.000000e-28
GCST004607_257Plateletcrit7.000000e-11
GCST004616_143Platelet distribution width5.000000e-34
GCST90002395_381Mean platelet volume2.000000e-72
GCST90002400_394Plateletcrit2.000000e-15
GCST90002401_122Platelet distribution width4.000000e-79
GCST90002402_319Platelet count3.000000e-52

EFO canonical traits (4, from GWAS)

EFO IDTrait name
EFO:0004309platelet count
EFO:0008174interleukin 17 measurement
EFO:0007985platelet crit
EFO:0007984platelet component distribution width

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (1): CHEMBL6067135 (SINGLE PROTEIN)

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

57 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidaffects cotreatment, increases expression, affects expression, decreases expression8
trichostatin Aaffects cotreatment, increases expression3
entinostatincreases expression, affects cotreatment2
Panobinostataffects cotreatment, increases expression2
Cisplatinaffects cotreatment, increases expression2
Tunicamycinincreases expression2
Cadmium Chloridedecreases expression, increases expression2
Thapsigarginincreases expression2
aristolochic acid Idecreases expression1
chloroacetaldehydeaffects expression1
triphenyl phosphateaffects expression1
sodium arsenitedecreases expression1
cobaltous chloridedecreases expression1
methacrylaldehydeaffects cotreatment, increases expression1
perfluorooctane sulfonic acidincreases expression1
cylindrospermopsinincreases expression1
JP8 aviation fueldecreases expression1
adefovir dipivoxilincreases expression1
4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideincreases expression, affects cotreatment1
ICG 001increases expression1
abrinedecreases expression1
Grape Seed Proanthocyanidinsaffects cotreatment, decreases expression1
dorsomorphinaffects cotreatment, increases expression1
pentabrominated diphenyl ether 100decreases expression1
hexabrominated diphenyl ether 153decreases expression1
jinfukangaffects cotreatment, increases expression1
bisphenol AFincreases expression1
Rosiglitazonedecreases expression1
Cidofovirincreases expression1
Acetaminophendecreases expression1

ChEMBL screening assays

1 unique, capped per target: 1 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL5652007BindingBinding affinity to human PDIA5 incubated for 45 mins by Kinobead based pull down assayNVP-BHG712: Effects of Regioisomers on the Affinity and Selectivity toward the EPHrin Family. — ChemMedChem

Cellosaurus cell lines

1 cell lines: 1 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_B2ADAbcam HeLa PDIA5 KOCancer cell lineFemale

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.