Seroatlas · Human Serome Atlas

SPG7

Mitochondrial inner membrane m-AAA protease component paraplegin

Also known as: CAR, CMAR, SPG5C, SPG7_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9UQ90
Gene
SPG7
Ensembl
ENSG00000197912
Chromosome
16
Canonical length
795 aa
Protein class
Disease related genes, Enzymes, Human disease related genes, Potential drug targets, Predicted intracellular proteins, Predicted membrane proteins

OverviewNCBI Gene

This gene encodes a mitochondrial metalloprotease protein that is a member of the AAA family. Members of this protein family share an ATPase domain and have roles in diverse cellular processes including membrane trafficking, intracellular motility, organelle biogenesis, protein folding, and proteolysis. Mutations in this gene cause autosomal recessive spastic paraplegia 7. Two transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2014]

Canonical amino-acid sequenceUniProt

795 residues, UniProt reviewed canonical sequence.

>Q9UQ90|SPG7
     1  MAVLLLLLRA LRRGPGPGPR PLWGPGPAWS PGFPARPGRG RPYMASRPPG DLAEAGGRAL
    61  QSLQLRLLTP TFEGINGLLL KQHLVQNPVR LWQLLGGTFY FNTSRLKQKN KEKDKSKGKA
   121  PEEDEEERRR RERDDQMYRE RLRTLLVIAV VMSLLNALST SGGSISWNDF VHEMLAKGEV
   181  QRVQVVPESD VVEVYLHPGA VVFGRPRLAL MYRMQVANID KFEEKLRAAE DELNIEAKDR
   241  IPVSYKRTGF FGNALYSVGM TAVGLAILWY VFRLAGMTGR EGGFSAFNQL KMARFTIVDG
   301  KMGKGVSFKD VAGMHEAKLE VREFVDYLKS PERFLQLGAK VPKGALLLGP PGCGKTLLAK
   361  AVATEAQVPF LAMAGPEFVE VIGGLGAARV RSLFKEARAR APCIVYIDEI DAVGKKRSTT
   421  MSGFSNTEEE QTLNQLLVEM DGMGTTDHVI VLASTNRADI LDGALMRPGR LDRHVFIDLP
   481  TLQERREIFE QHLKSLKLTQ SSTFYSQRLA ELTPGFSGAD IANICNEAAL HAAREGHTSV
   541  HTLNFEYAVE RVLAGTAKKS KILSKEEQKV VAFHESGHAL VGWMLEHTEA VMKVSITPRT
   601  NAALGFAQML PRDQHLFTKE QLFERMCMAL GGRASEALSF NEVTSGAQDD LRKVTRIAYS
   661  MVKQFGMAPG IGPISFPEAQ EGLMGIGRRP FSQGLQQMMD HEARLLVAKA YRHTEKVLQD
   721  NLDKLQALAN ALLEKEVINY EDIEALIGPP PHGPKKMIAP QRWIDAQREK QDLGEEETEE
   781  TQQPPLGGEE PTWPK

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against SPG7 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
2
Mean surface accessibility (rSASA)
0.39
Highest tissue expression
49 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 49 nTPM
  • heart muscle: 33 nTPM
  • tongue: 29 nTPM
  • liver: 22 nTPM
  • cerebral cortex: 22 nTPM
  • adrenal gland: 22 nTPM

Single-cell type

  • leydig cells: 152 nCPM
  • enterocytes: 145 nCPM
  • proximal tubule cells: 143 nCPM
  • thymocytes: 138 nCPM
  • oligodendrocyte progenitor cells: 132 nCPM
  • somatotrophs: 129 nCPM

Immune cell

  • basophil: 4.5 nTPM
  • eosinophil: 3.9 nTPM
  • NK-cell: 3.7 nTPM
  • naive B-cell: 3.4 nTPM
  • naive CD4 T-cell: 3.1 nTPM
  • neutrophil: 2.9 nTPM

Brain region

  • cerebellum: 25 nTPM
  • pons: 23 nTPM
  • cerebral cortex: 23 nTPM
  • white matter: 22 nTPM
  • medulla oblongata: 22 nTPM
  • hippocampal formation: 22 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about SPG7.

Disease | AllUniProt

Conditions SPG7 is implicated in, by any mechanism.

Disease | GeneticClinVar

193 pathogenic / likely-pathogenic of 1,249 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
1.65
gnomAD pLI
0
gnomAD missense Z
-0.87
DepMap mean gene effect
0.03
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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 SPG7 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 SPG7 as an antibody target. Whether an autoantibody or antibody against SPG7 could matter depends on whether native SPG7 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

SPG7 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 SPG7 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/SPG7. 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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