Seroatlas · Human Serome Atlas

PHGDH

D-3-phosphoglycerate dehydrogenase

Also known as: PDG, PGDH, SERA, SERA_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
O43175
Gene
PHGDH
Ensembl
ENSG00000092621
Chromosome
1
Canonical length
533 aa
Protein class
Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
Subcellular location
Nucleoplasm,Plasma membrane,Cytosol
Quaternary structure
Homotetramer

OverviewNCBI Gene

This gene encodes the enzyme which is involved in the early steps of L-serine synthesis in animal cells. L-serine is required for D-serine and other amino acid synthesis. The enzyme requires NAD/NADH as a cofactor and forms homotetramers for activity. Mutations in this gene have been found in a family with congenital microcephaly, psychomotor retardation and other symptoms. Multiple alternatively spliced transcript variants have been found, however the full-length nature of most are not known. [provided by RefSeq, Aug 2011]

Canonical amino-acid sequenceUniProt

533 residues, UniProt reviewed canonical sequence.

>O43175|PHGDH
     1  MAFANLRKVL ISDSLDPCCR KILQDGGLQV VEKQNLSKEE LIAELQDCEG LIVRSATKVT
    61  ADVINAAEKL QVVGRAGTGV DNVDLEAATR KGILVMNTPN GNSLSAAELT CGMIMCLARQ
   121  IPQATASMKD GKWERKKFMG TELNGKTLGI LGLGRIGREV ATRMQSFGMK TIGYDPIISP
   181  EVSASFGVQQ LPLEEIWPLC DFITVHTPLL PSTTGLLNDN TFAQCKKGVR VVNCARGGIV
   241  DEGALLRALQ SGQCAGAALD VFTEEPPRDR ALVDHENVIS CPHLGASTKE AQSRCGEEIA
   301  VQFVDMVKGK SLTGVVNAQA LTSAFSPHTK PWIGLAEALG TLMRAWAGSP KGTIQVITQG
   361  TSLKNAGNCL SPAVIVGLLK EASKQADVNL VNAKLLVKEA GLNVTTSHSP AAPGEQGFGE
   421  CLLAVALAGA PYQAVGLVQG TTPVLQGLNG AVFRPEVPLR RDLPLLLFRT QTSDPAMLPT
   481  MIGLLAEAGV RLLSYQTSLV SDGETWHVMG ISSLLPSLEA WKQHVTEAFQ FHF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against PHGDH 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
161 nTPM

Expression across tissuesHPA

Tissue

  • pancreas: 161 nTPM
  • salivary gland: 147 nTPM
  • amygdala: 137 nTPM
  • basal ganglia: 134 nTPM
  • midbrain: 121 nTPM
  • liver: 118 nTPM

Single-cell type

  • epididymal principal cells: 269 nCPM
  • esophageal basal cells: 209 nCPM
  • lacrimal acinar cells: 199 nCPM
  • late spermatids: 198 nCPM
  • cholangiocytes: 183 nCPM
  • salivary acinar cells: 140 nCPM

Immune cell

  • naive CD8 T-cell: 25 nTPM
  • naive CD4 T-cell: 13 nTPM
  • memory B-cell: 11 nTPM
  • memory CD8 T-cell: 8.2 nTPM
  • total PBMC: 6.3 nTPM
  • myeloid DC: 5.3 nTPM

Brain region

  • white matter: 181 nTPM
  • cerebellum: 139 nTPM
  • hypothalamus: 137 nTPM
  • basal ganglia: 124 nTPM
  • medulla oblongata: 120 nTPM
  • pons: 110 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about PHGDH.

Disease | AllUniProt

Conditions PHGDH is implicated in, by any mechanism.

Disease | GeneticClinVar

97 pathogenic / likely-pathogenic of 948 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

ReferencesPubMed · IEDB

Publications for PHGDH from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.

Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.

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)
0.78
gnomAD pLI
0
gnomAD missense Z
0.21
DepMap mean gene effect
-0.05
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of PHGDH 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 PHGDH as an antibody target. Whether an autoantibody or antibody against PHGDH could matter depends on whether native PHGDH is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

PHGDH 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 PHGDH as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/PHGDH. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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