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Aliases for PGA3 Gene

Aliases for PGA3 Gene

  • Pepsinogen 3, Group I (Pepsinogen A) 2 3 5
  • Pepsinogen-3 3 4
  • Pepsinogen A3 3
  • EC 4

External Ids for PGA3 Gene

Previous GeneCards Identifiers for PGA3 Gene

  • GC11U990100
  • GC11P060785
  • GC11P060787
  • GC11P060766
  • GC11P060715
  • GC11P060970

Summaries for PGA3 Gene

Entrez Gene Summary for PGA3 Gene

  • This gene encodes a protein precursor of the digestive enzyme pepsin, a member of the peptidase A1 family of endopeptidases. The encoded precursor is secreted by gastric chief cells and undergoes autocatalytic cleavage in acidic conditions to form the active enzyme, which functions in the digestion of dietary proteins. This gene is found in a cluster of related genes on chromosome 11, each of which encodes one of multiple pepsinogens. Pepsinogen levels in serum may serve as a biomarker for atrophic gastritis and gastric cancer. [provided by RefSeq, Jul 2015]

GeneCards Summary for PGA3 Gene

PGA3 (Pepsinogen 3, Group I (Pepsinogen A)) is a Protein Coding gene. Diseases associated with PGA3 include Atrophic Gastritis and Gastritis. Among its related pathways are Surfactant metabolism and Protein digestion and absorption. GO annotations related to this gene include aspartic-type endopeptidase activity. An important paralog of this gene is REN.

UniProtKB/Swiss-Prot for PGA3 Gene

  • Shows particularly broad specificity; although bonds involving phenylalanine and leucine are preferred, many others are also cleaved to some extent.

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for PGA3 Gene

Genomics for PGA3 Gene

Regulatory Elements for PGA3 Gene

Enhancers for PGA3 Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around PGA3 on UCSC Golden Path with GeneCards custom track

Genomic Location for PGA3 Gene

61,203,307 bp from pter
61,213,098 bp from pter
9,792 bases
Plus strand

Genomic View for PGA3 Gene

Genes around PGA3 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
PGA3 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for PGA3 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for PGA3 Gene

Proteins for PGA3 Gene

  • Protein details for PGA3 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Pepsin A-3
    Protein Accession:
    Secondary Accessions:
    • A8K749
    • B2R7D6
    • B7ZW75
    • P00790
    • Q7M4R0
    • Q8N1E3

    Protein attributes for PGA3 Gene

    388 amino acids
    Molecular mass:
    41976 Da
    Quaternary structure:
    No Data Available

neXtProt entry for PGA3 Gene

Proteomics data for PGA3 Gene at MOPED

Post-translational modifications for PGA3 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for PGA3 Gene

No data available for DME Specific Peptides for PGA3 Gene

Domains & Families for PGA3 Gene

Suggested Antigen Peptide Sequences for PGA3 Gene

Graphical View of Domain Structure for InterPro Entry



  • Contains 1 peptidase A1 domain.
  • Belongs to the peptidase A1 family.
  • Contains 1 peptidase A1 domain.
  • Belongs to the peptidase A1 family.
genes like me logo Genes that share domains with PGA3: view

No data available for Gene Families for PGA3 Gene

Function for PGA3 Gene

Molecular function for PGA3 Gene

GENATLAS Biochemistry:
pepsinogen 3,group I (pepsinogen A),clustered with PGA4,PGA5
UniProtKB/Swiss-Prot CatalyticActivity:
Preferential cleavage: hydrophobic, preferably aromatic, residues in P1 and P1 positions. Cleaves 1-Phe- -Val-2, 4-Gln- -His-5, 13-Glu- -Ala-14, 14-Ala- -Leu-15, 15-Leu- -Tyr-16, 16-Tyr- -Leu-17, 23-Gly- -Phe-24, 24-Phe- -Phe-25 and 25-Phe- -Tyr-26 bonds in the B chain of insulin.
UniProtKB/Swiss-Prot Function:
Shows particularly broad specificity; although bonds involving phenylalanine and leucine are preferred, many others are also cleaved to some extent.

Enzyme Numbers (IUBMB) for PGA3 Gene

Phenotypes for PGA3 Gene

GenomeRNAi human phenotypes for PGA3:
genes like me logo Genes that share phenotypes with PGA3: view

Animal Model Products

No data available for Gene Ontology (GO) - Molecular Function , Human Phenotype Ontology , Animal Models , miRNA , Transcription Factor Targets and HOMER Transcription for PGA3 Gene

Localization for PGA3 Gene

Subcellular locations from UniProtKB/Swiss-Prot for PGA3 Gene


Subcellular locations from

Jensen Localization Image for PGA3 Gene COMPARTMENTS Subcellular localization image for PGA3 gene
Compartment Confidence
extracellular 5
endosome 4
cytosol 1

No data available for Gene Ontology (GO) - Cellular Components for PGA3 Gene

Pathways & Interactions for PGA3 Gene

genes like me logo Genes that share pathways with PGA3: view

Pathways by source for PGA3 Gene

2 Reactome pathways for PGA3 Gene
1 KEGG pathway for PGA3 Gene

Interacting Proteins for PGA3 Gene

Gene Ontology (GO) - Biological Process for PGA3 Gene


No data available for SIGNOR curated interactions for PGA3 Gene

Drugs & Compounds for PGA3 Gene

(2) Drugs for PGA3 Gene - From: DGIdb

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Ecabet Approved, Investigational Pharma 5
Sucralfate Approved Pharma 10
genes like me logo Genes that share compounds with PGA3: view

Transcripts for PGA3 Gene

mRNA/cDNA for PGA3 Gene

(1) REFSEQ mRNAs :
(9) Additional mRNA sequences :
(9) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for PGA3 Gene

Pepsinogen 3, group I (pepsinogen A):
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for PGA3 Gene

No ASD Table

Relevant External Links for PGA3 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for PGA3 Gene

mRNA expression in normal human tissues for PGA3 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for PGA3 Gene

This gene is overexpressed in Stomach (x52.8).

Protein differential expression in normal tissues from HIPED for PGA3 Gene

This gene is overexpressed in Stomach (58.8) and Urine (9.2).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, and MOPED for PGA3 Gene

SOURCE GeneReport for Unigene cluster for PGA3 Gene Hs.601055

genes like me logo Genes that share expression patterns with PGA3: view

Protein tissue co-expression partners for PGA3 Gene

- Elite partner

Primer Products

No data available for mRNA Expression by UniProt/SwissProt for PGA3 Gene

Orthologs for PGA3 Gene

This gene was present in the common ancestor of chordates.

Orthologs for PGA3 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia PGA5 35
  • 84.72 (n)
  • 82.12 (a)
PGA 36
  • 82 (a)
(Canis familiaris)
Mammalia PGA 35
  • 86.18 (n)
  • 82.64 (a)
PGA 36
  • 82 (a)
(Pan troglodytes)
Mammalia PGA4 35
  • 98.97 (n)
  • 98.45 (a)
-- 36
  • 98 (a)
(Monodelphis domestica)
Mammalia -- 36
  • 61 (a)
(Mus musculus)
Mammalia Pga5 36
  • 55 (a)
(Gallus gallus)
Aves LOC395926 35
  • 63.53 (n)
  • 59 (a)
PGA 36
  • 62 (a)
(Anolis carolinensis)
Reptilia -- 36
  • 72 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia pga4 35
  • 68.06 (n)
  • 69.01 (a)
Species with no ortholog for PGA3:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • 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)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for PGA3 Gene

Gene Tree for PGA3 (if available)
Gene Tree for PGA3 (if available)

Paralogs for PGA3 Gene

Paralogs for PGA3 Gene

(8) SIMAP similar genes for PGA3 Gene using alignment to 5 proteins: Pseudogenes for PGA3 Gene

genes like me logo Genes that share paralogs with PGA3: view

Variants for PGA3 Gene

Sequence variations from dbSNP and Humsavar for PGA3 Gene

SNP ID Clin Chr 11 pos Sequence Context AA Info Type
rs520677 -- 61,205,441(-) gtcct(C/T)atcat intron-variant
rs561765 -- 61,207,339(+) GGACA(A/G)AACCT intron-variant
rs582338 -- 61,205,482(+) AACAA(A/G)AAGAT intron-variant
rs589684 -- 61,202,458(-) TGGAG(C/T)GAAGC upstream-variant-2KB
rs595823 -- 61,203,393(-) GCCCT(A/G)AGCCA upstream-variant-2KB

Structural Variations from Database of Genomic Variants (DGV) for PGA3 Gene

Variant ID Type Subtype PubMed ID
nsv832176 CNV Gain+Loss 17160897
nsv428259 CNV Gain+Loss 18775914
dgv390e1 CNV Complex 17122850
nsv832177 CNV Loss 17160897
nsv820586 CNV Deletion 20802225
nsv825937 CNV Loss 20364138
nsv8833 CNV Gain 18304495
esv29298 CNV Gain+Loss 19812545
esv1004439 CNV Deletion 20482838
nsv72 CNV Insertion 15895083
nsv338 CNV Insertion 18451855
nsv339 CNV Loss 18451855
nsv436823 CNV Insertion 17901297
nsv514629 CNV Complex 21397061

Variation tolerance for PGA3 Gene

Gene Damage Index Score: 0.53; 11.48% of all genes are more intolerant (likely to be disease-causing)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot and Relevant External Links for PGA3 Gene

Disorders for PGA3 Gene

MalaCards: The human disease database

(3) MalaCards diseases for PGA3 Gene - From: DISEASES and GeneCards

Disorder Aliases PubMed IDs
atrophic gastritis
  • gastric atrophy
  • acute gastric mucosal erosion
amyotrophic lateral sclerosis 1
  • amyotrophic lateral sclerosis
- elite association - COSMIC cancer census association via MalaCards
Search PGA3 in MalaCards View complete list of genes associated with diseases

Relevant External Links for PGA3

Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with PGA3: view

No data available for UniProtKB/Swiss-Prot and Genatlas for PGA3 Gene

Publications for PGA3 Gene

  1. Primary structure of human pepsinogen gene. (PMID: 6300126) Sogawa K. … Takahashi K. (J. Biol. Chem. 1983) 2 3 4 67
  2. Temporal changes in serum biomarkers and risk for progression of gastric precancerous lesions: a longitudinal study. (PMID: 24895149) Tu H. … Yuan Y. (Int. J. Cancer 2015) 3
  3. A possible association of low pepsinogen I and pepsinogen I/II with low and high body weight in Japanese men. (PMID: 24125879) Kutsuma A. … Nakajima K. (Clin. Biochem. 2014) 3
  4. Serum pepsinogen reference intervals in apparently healthy Chinese population with latex enhanced turbidimetric immunoassay. (PMID: 24170207) Huang M. … Yang J.J. (J. Clin. Pathol. 2014) 3
  5. The value of serum pepsinogen levels for the diagnosis of gastric diseases in Chinese Han people in midsouth China. (PMID: 24383519) Zhang X.M. … Gu H. (BMC Gastroenterol 2014) 3

Products for PGA3 Gene

Sources for PGA3 Gene