NME4
Nucleoside diphosphate kinase, mitochondrial
Also known as: NDKM_HUMAN, NDPKD, nm23-H4, NM23H4
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O00746
- Gene
- NME4
- Ensembl
- ENSG00000103202
- Chromosome
- 16
- Canonical length
- 187 aa
- Protein class
- Enzymes, Metabolic proteins, Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Mitochondria
- Quaternary structure
- Homohexamer
OverviewNCBI Gene
The nucleoside diphosphate (NDP) kinases (EC 2.7.4.6) are ubiquitous enzymes that catalyze transfer of gamma-phosphates, via a phosphohistidine intermediate, between nucleoside and dioxynucleoside tri- and diphosphates. The enzymes are products of the nm23 gene family, which includes NME4 (Milon et al., 1997 [PubMed 9099850]).[supplied by OMIM, May 2008]
Canonical amino-acid sequenceUniProt
187 residues, UniProt reviewed canonical sequence.
>O00746|NME4
1 MGGLFWRSAL RGLRCGPRAP GPSLLVRHGS GGPSWTRERT LVAVKPDGVQ RRLVGDVIQR
61 FERRGFTLVG MKMLQAPESV LAEHYQDLRR KPFYPALIRY MSSGPVVAMV WEGYNVVRAS
121 RAMIGHTDSA EAAPGTIRGD FSVHISRNVI HASDSVEGAQ REIQLWFQSS ELVSWADGGQ
181 HSSIHPALocalizationUniProt · AlphaFold · HPA
Whether an antibody against NME4 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
- Other membrane
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.39
- Highest tissue expression
- 187 nTPM
Expression across tissuesHPA
Tissue
- colon: 187 nTPM
- liver: 172 nTPM
- urinary bladder: 154 nTPM
- prostate: 141 nTPM
- adrenal gland: 134 nTPM
- bone marrow: 120 nTPM
Single-cell type
- erythrocyte progenitors: 373 nCPM
- megakaryocytes: 260 nCPM
- smooth muscle cells: 255 nCPM
- hofbauer cells: 217 nCPM
- decidual stromal cells: 205 nCPM
- epididymal efferent duct absorptive cells: 194 nCPM
Immune cell
- plasmacytoid DC: 58 nTPM
- eosinophil: 40 nTPM
- naive B-cell: 30 nTPM
- memory B-cell: 28 nTPM
- naive CD4 T-cell: 26 nTPM
- myeloid DC: 18 nTPM
Brain region
- medulla oblongata: 71 nTPM
- hypothalamus: 55 nTPM
- thalamus: 54 nTPM
- pons: 53 nTPM
- spinal cord: 50 nTPM
- cerebral cortex: 49 nTPM
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)
- 1.57
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.74
- DepMap mean gene effect
- 0.05
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- CTP biosynthetic process
- GTP biosynthetic process
- intermembrane phospholipid transfer
- lipid transport
- nucleoside metabolic process
- protein hexamerization
- UTP biosynthetic process
Molecular functions
- ATP binding
- cardiolipin binding
- GTPase binding
- metal ion binding
- mitochondrion-mitochondrion outer membrane tether activity
- nucleoside diphosphate kinase activity
- phosphatidylglycerol transfer activity
- phospholipid binding
- protein-containing complex binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of NME4 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 NME4 as an antibody target. Whether an autoantibody or antibody against NME4 could matter depends on whether native NME4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
NME4 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 NME4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
Loading the interactive Seroatlas protein explorer...