GYS2
Glycogen [starch] synthase, liver
Also known as: GYS2_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P54840
- Gene
- GYS2
- Ensembl
- ENSG00000111713
- Chromosome
- 12
- Canonical length
- 703 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins
OverviewNCBI Gene
The protein encoded by this gene, liver glycogen synthase, catalyzes the rate-limiting step in the synthesis of glycogen - the transfer of a glucose molecule from UDP-glucose to a terminal branch of the glycogen molecule. Mutations in this gene cause glycogen storage disease type 0 (GSD-0) - a rare type of early childhood fasting hypoglycemia with decreased liver glycogen content. [provided by RefSeq, Dec 2009]
Canonical amino-acid sequenceUniProt
703 residues, UniProt reviewed canonical sequence.
>P54840|GYS2
1 MLRGRSLSVT SLGGLPQWEV EELPVEELLL FEVAWEVTNK VGGIYTVIQT KAKTTADEWG
61 ENYFLIGPYF EHNMKTQVEQ CEPVNDAVRR AVDAMNKHGC QVHFGRWLIE GSPYVVLFDI
121 GYSAWNLDRW KGDLWEACSV GIPYHDREAN DMLIFGSLTA WFLKEVTDHA DGKYVVAQFH
181 EWQAGIGLIL SRARKLPIAT IFTTHATLLG RYLCAANIDF YNHLDKFNID KEAGERQIYH
241 RYCMERASVH CAHVFTTVSE ITAIEAEHML KRKPDVVTPN GLNVKKFSAV HEFQNLHAMY
301 KARIQDFVRG HFYGHLDFDL EKTLFLFIAG RYEFSNKGAD IFLESLSRLN FLLRMHKSDI
361 TVMVFFIMPA KTNNFNVETL KGQAVRKQLW DVAHSVKEKF GKKLYDALLR GEIPDLNDIL
421 DRDDLTIMKR AIFSTQRQSL PPVTTHNMID DSTDPILSTI RRIGLFNNRT DRVKVILHPE
481 FLSSTSPLLP MDYEEFVRGC HLGVFPSYYE PWGYTPAECT VMGIPSVTTN LSGFGCFMQE
541 HVADPTAYGI YIVDRRFRSP DDSCNQLTKF LYGFCKQSRR QRIIQRNRTE RLSDLLDWRY
601 LGRYYQHARH LTLSRAFPDK FHVELTSPPT TEGFKYPRPS SVPPSPSGSQ ASSPQSSDVE
661 DEVEDERYDE EEEAERDRLN IKSPFSLSHV PHGKKKLHGE YKNLocalizationUniProt · AlphaFold · HPA
Whether an antibody against GYS2 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)
- 0.25
- Highest tissue expression
- 163 nTPM
Expression across tissuesHPA
Tissue
- liver: 163 nTPM
- esophagus: 5.3 nTPM
- vagina: 4.5 nTPM
- cervix: 4.2 nTPM
- adipose tissue: 2.7 nTPM
- breast: 1.1 nTPM
Single-cell type
- hepatocytes: 8.8 nCPM
- esophageal apical cells: 3.1 nCPM
- loop of henle epithelial cells: 2.3 nCPM
- bergmann glia: 2.2 nCPM
- proximal tubule cells: 2.1 nCPM
- astrocytes: 1.8 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- white matter: 0.6 nTPM
- amygdala: 0.2 nTPM
- basal ganglia: 0.2 nTPM
- cerebellum: 0.2 nTPM
- cerebral cortex: 0.2 nTPM
- hippocampal formation: 0.2 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about GYS2.
Disease | AllUniProt
Conditions GYS2 is implicated in, by any mechanism.
- Glycogen storage disease 0 (GSD0) MIM:240600
Disease | GeneticClinVar
46 pathogenic / likely-pathogenic of 379 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Glycogen storage disorder due to hepatic glycogen synthase deficiency
- Glycogen storage disease
- GYS2-related disorder
- See cases
- Thymoma
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)
- 1.13
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.14
- DepMap mean gene effect
- 0.13
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 2% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
- alpha-1,4-glucan glucosyltransferase (UDP-glucose donor) activity
- glycogen synthase activity, transferring glucose-1-phosphate
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of GYS2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads GYS2 as an antibody target. Whether an autoantibody or antibody against GYS2 could matter depends on whether native GYS2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GYS2 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 GYS2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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