PGA4 pepsinogen A4 [Homo sapiens (human)] - Gene

Summary

Official Symbol: PGA4provided by HGNC
Official Full Name: pepsinogen A4provided by HGNC
Primary source: HGNC:HGNC:8886
See related: Ensembl:ENSG00000229183 MIM:169720; AllianceGenome:HGNC:8886
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Summary: 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]
Expression: Restricted expression toward stomach (RPKM 23688.7) See more
Orthologs: all
NEW: Try the new Gene table
Try the new Transcript table

Genomic context

Location:: 11q12.2

Exon count:: 9

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	11	NC_000011.10 (61222347..61231694)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	11	NC_060935.1 (61211336..61220690)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	11	NC_000011.9 (60989819..60999166)

Chromosome 11 - NC_000011.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

Go to the top of the page Help

Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

Go to the top of the page Help

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

Go to the top of the page Help

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Submit: New GeneRIF Correction

Phenotypes

Go to the top of the page Help

Review eQTL and phenotype association data in this region using PheGenI

Variation

Go to the top of the page Help

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

Go to the top of the page Help

Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

Go to the top of the page Help

Markers

STS-R83655 (e-PCR)
- UniSTS:21261

GDB:197565 (e-PCR)
- UniSTS:155946

GDB:197855 (e-PCR)
- UniSTS:155970

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables aspartic-type endopeptidase activity	IBA Inferred from Biological aspect of Ancestor more info
enables aspartic-type endopeptidase activity	IEA Inferred from Electronic Annotation more info
enables hydrolase activity	IEA Inferred from Electronic Annotation more info
enables peptidase activity	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in digestion	IEA Inferred from Electronic Annotation more info
involved_in proteolysis	IBA Inferred from Biological aspect of Ancestor more info
involved_in proteolysis	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
located_in extracellular exosome	HDA more info	PubMed
located_in extracellular region	IEA Inferred from Electronic Annotation more info
located_in multivesicular body lumen	TAS Traceable Author Statement more info

General protein information

Go to the top of the page Help

Preferred Names: pepsin A-4

Names: pepsinogen 4, group I (pepsinogen A); pepsinogen-4; pregnancy-associated glycoprotein

NP_001073276.1

EC 3.4.23.1

NCBI Reference Sequences (RefSeq)

Go to the top of the page Help

NEW Try the new Transcript table

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.