GGPS1
Geranylgeranyl pyrophosphate synthase
Also known as: GGPPS_HUMAN, GGPPS1
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O95749
- Gene
- GGPS1
- Ensembl
- ENSG00000152904
- Chromosome
- 1
- Canonical length
- 300 aa
- Protein class
- Disease related genes, Enzymes, FDA approved drug targets, Metabolic proteins, Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Nucleoplasm,Cytosol
- Quaternary structure
- Homohexamer
OverviewNCBI Gene
This gene is a member of the prenyltransferase family and encodes a protein with geranylgeranyl diphosphate (GGPP) synthase activity. The enzyme catalyzes the synthesis of GGPP from farnesyl diphosphate and isopentenyl diphosphate. GGPP is an important molecule responsible for the C20-prenylation of proteins and for the regulation of a nuclear hormone receptor. Alternate transcriptional splice variants, both protein-coding and non-protein-coding, have been found for this gene. [provided by RefSeq, Sep 2010]
Canonical amino-acid sequenceUniProt
300 residues, UniProt reviewed canonical sequence.
>O95749|GGPS1
1 MEKTQETVQR ILLEPYKYLL QLPGKQVRTK LSQAFNHWLK VPEDKLQIII EVTEMLHNAS
61 LLIDDIEDNS KLRRGFPVAH SIYGIPSVIN SANYVYFLGL EKVLTLDHPD AVKLFTRQLL
121 ELHQGQGLDI YWRDNYTCPT EEEYKAMVLQ KTGGLFGLAV GLMQLFSDYK EDLKPLLNTL
181 GLFFQIRDDY ANLHSKEYSE NKSFCEDLTE GKFSFPTIHA IWSRPESTQV QNILRQRTEN
241 IDIKKYCVHY LEDVGSFEYT RNTLKELEAK AYKQIDARGG NPELVALVKH LSKMFKEENELocalizationUniProt · AlphaFold · HPA
Whether an antibody against GGPS1 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.24
- Highest tissue expression
- 45 nTPM
Expression across tissuesHPA
Tissue
- testis: 45 nTPM
- retina: 36 nTPM
- breast: 32 nTPM
- salivary gland: 29 nTPM
- epididymis: 29 nTPM
- skeletal muscle: 28 nTPM
Single-cell type
- late spermatids: 884 nCPM
- epicardial cells: 332 nCPM
- cardiomyocytes: 198 nCPM
- early spermatids: 118 nCPM
- late primary spermatocytes: 102 nCPM
- adipocytes: 36 nCPM
Immune cell
- non-classical monocyte: 55 nTPM
- eosinophil: 49 nTPM
- basophil: 44 nTPM
- T-reg: 43 nTPM
- memory CD4 T-cell: 40 nTPM
- memory B-cell: 39 nTPM
Brain region
- white matter: 36 nTPM
- cerebellum: 31 nTPM
- hypothalamus: 31 nTPM
- pons: 30 nTPM
- spinal cord: 30 nTPM
- medulla oblongata: 29 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about GGPS1.
Disease | AllUniProt
Conditions GGPS1 is implicated in, by any mechanism.
- Muscular dystrophy, congenital hearing loss, and ovarian insufficiency syndrome (MDHLO) MIM:619518
Disease | GeneticClinVar
4 pathogenic / likely-pathogenic of 48 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Muscular dystrophy, congenital hearing loss, and ovarian insufficiency syndrome
- Myopathy with tubular aggregates
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.64
- gnomAD pLI
- 0.27
- gnomAD missense Z
- 1.22
- DepMap mean gene effect
- -1.29
- DepMap dependency class
- common
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 13% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- farnesyl diphosphate biosynthetic process
- geranyl diphosphate biosynthetic process
- isoprenoid biosynthetic process
- isoprenoid metabolic process
- geranylgeranyl diphosphate biosynthetic process
Molecular functions
- (2E,6E)-farnesyl diphosphate synthase activity
- dimethylallyltranstransferase activity
- geranylgeranyl diphosphate synthase activity
- identical protein binding
- metal ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads GGPS1 as an antibody target. Whether an autoantibody or antibody against GGPS1 could matter depends on whether native GGPS1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GGPS1 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label GGPS1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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