GNPTG N-acetylglucosamine-1-phosphate transferase subunit gamma [Homo sapiens (human)] - Gene

Summary

Official Symbol: GNPTGprovided by HGNC
Official Full Name: N-acetylglucosamine-1-phosphate transferase subunit gammaprovided by HGNC
Primary source: HGNC:HGNC:23026
See related: Ensembl:ENSG00000090581 MIM:607838; AllianceGenome:HGNC:23026
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
Also known as: RJD9; GNPTAG; LP2537; C16orf27
Summary: This gene encodes the gamma sunbunit of the N-acetylglucosamine-1-phosphotransferase complex. This hexameric complex, composed of alpha, beta and gamma subunits, catalyzes the first step in synthesis of a mannose 6-phosphate lysosomal recognition marker. This enzyme complex is necessary for targeting of lysosomal hydrolases to the lysosome. Mutations in the gene encoding the gamma subunit have been associated with mucolipidosis IIIC, also known as mucolipidosis III gamma.[provided by RefSeq, Feb 2010]
Expression: Ubiquitous expression in adrenal (RPKM 53.6), kidney (RPKM 34.3) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 16p13.3

Exon count:: 11

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	16	NC_000016.10 (1351931..1364113)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	16	NC_060940.1 (1368108..1380245)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	16	NC_000016.9 (1401932..1414114)

Chromosome 16 - NC_000016.10 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: 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?

Pathogenic variants in GNPTAB and GNPTG encoding distinct subunits of GlcNAc-1-phosphotransferase differentially impact bone resorption in patients with mucolipidosis type II and III.
Title: Pathogenic variants in GNPTAB and GNPTG encoding distinct subunits of GlcNAc-1-phosphotransferase differentially impact bone resorption in patients with mucolipidosis type II and III.
UDP-GlcNAc-1-Phosphotransferase Is a Clinically Important Regulator of Human and Mouse Hair Pigmentation.
Title: UDP-GlcNAc-1-Phosphotransferase Is a Clinically Important Regulator of Human and Mouse Hair Pigmentation.
Disease-causing missense mutations within the N-terminal transmembrane domain of GlcNAc-1-phosphotransferase impair endoplasmic reticulum translocation or Golgi retention.
Title: Disease-causing missense mutations within the N-terminal transmembrane domain of GlcNAc-1-phosphotransferase impair endoplasmic reticulum translocation or Golgi retention.
Identification and characterization of 30 novel pathogenic variations in 69 unrelated Indian patients with Mucolipidosis Type II and Type III.
Title: Identification and characterization of 30 novel pathogenic variations in 69 unrelated Indian patients with Mucolipidosis Type II and Type III.
Clinical, radiological and computational studies on two novel GNPTG variants causing mucolipidosis III gamma phenotypes with varying severity.
Title: Clinical, radiological and computational studies on two novel GNPTG variants causing mucolipidosis III gamma phenotypes with varying severity.
We evaluated 51 stuttering individuals with a mutation in either the GNPTAB, GNPTG, NAGPA, or AP4E1 gene. Mutation carriers achieved significantly less resolution in PSI following therapy, with PSI scores showing significantly less improvement in individuals who carry a mutation (p = 0.0157, RR = 1.75, OR = 2.92) while the group difference in DWS between carriers and non-carriers was statistically not significant.
Title: Genetic factors and therapy outcomes in persistent developmental stuttering.
Data provide an overview on 50 mutations in GNPTG including seven novel variants. GNPTG mutations apparently are associated with a milder phenotype and better prognosis compared with GNPTAB mutations in patients with mucolipidosis.
Title: The lysosomal storage disorders mucolipidosis type II, type III alpha/beta, and type III gamma: Update on GNPTAB and GNPTG mutations.
Whole exome sequencing found an insertion mutation c.478_479insTAGG in GNTPG, which cosegregated with the Mucolipidosis III Gamma disease phenotype in the family.
Title: Genetic Testing of a Large Consanguineous Pakistani Family Affected with Mucolipidosis III Gamma Through Next-Generation Sequencing.
14 variations were found in GNPTAB, GNPTG and NAGPA genes.
Title: Variants in GNPTAB, GNPTG and NAGPA genes are associated with stutterers.
Study identified three novel mutations in GNPTG causing Mucolipidosis type III. Some were associated with severe clinical phenotype with an earlier onset of signs and symptoms and poorer prognosis.
Title: Mucolipidosis type III gamma: Three novel mutation and genotype-phenotype study in eleven patients.

Submit: New GeneRIF Correction See all GeneRIFs (24)

Phenotypes

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Review eQTL and phenotype association data in this region using PheGenI

Associated conditions

Description	Tests
GNPTG-mucolipidosis MedGen: C1854896 OMIM: 252605 GeneReviews: Mucolipidosis III Gamma	Compare labs

Variation

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See studies and variants in dbVar

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See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

PMC289169P1 (e-PCR)
- UniSTS:272414

PMC289169P2 (e-PCR)
- UniSTS:272415

D8S2279 (e-PCR)
- UniSTS:473907

RH79802 (e-PCR)
- UniSTS:88688

NoName (e-PCR)
- UniSTS:486590

RH11799 (e-PCR)
- UniSTS:80635

SHGC-61167 (e-PCR)
- UniSTS:80636

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein homodimerization activity	ISS Inferred from Sequence or Structural Similarity more info

Process	Evidence Code	Pubs
involved_in N-glycan processing to lysosome	NAS Non-traceable Author Statement more info	PubMed
involved_in carbohydrate phosphorylation	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
is_active_in Golgi apparatus	IBA Inferred from Biological aspect of Ancestor more info
located_in Golgi apparatus	IDA Inferred from Direct Assay more info	PubMed
located_in Golgi apparatus	IEA Inferred from Electronic Annotation more info
located_in Golgi apparatus	ISS Inferred from Sequence or Structural Similarity more info
part_of UDP-N-acetylglucosamine-lysosomal-enzyme N-acetylglucosaminephosphotransferase complex	IPI Inferred from Physical Interaction more info	PubMed
located_in extracellular exosome	HDA more info	PubMed
located_in extracellular region	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: N-acetylglucosamine-1-phosphotransferase subunit gamma

Names: N-acetylglucosamine-1-phosphate transferase gamma subunit; UDP-N-acetylglucosamine-1-phosphotransferase subunit gamma; glcNAc-1-phosphotransferase subunit gamma

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.