SMARCAL1
SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A-like protein 1
Also known as: HARP, HHARP, SMAL1_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9NZC9
- Gene
- SMARCAL1
- Ensembl
- ENSG00000138375
- Chromosome
- 2
- Canonical length
- 954 aa
- Protein class
- Disease related genes, Human disease related genes, Predicted intracellular proteins
- Subcellular location
- Nucleoplasm
OverviewNCBI Gene
The protein encoded by this gene is a member of the SWI/SNF family of proteins. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein shows sequence similarity to the E. coli RNA polymerase-binding protein HepA. Mutations in this gene are a cause of Schimke immunoosseous dysplasia (SIOD), an autosomal recessive disorder with the diagnostic features of spondyloepiphyseal dysplasia, renal dysfunction, and T-cell immunodeficiency. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
954 residues, UniProt reviewed canonical sequence.
>Q9NZC9|SMARCAL1
1 MSLPLTEEQR KKIEENRQKA LARRAEKLLA EQHQRTSSGT SIAGNPFQAK QGPSQNFPRE
61 SCKPVSHGVI FKQQNLSSSS NADQRPHDSH SFQAKGIWKK PEEMPTACPG HSPRSQMALT
121 GISPPLAQSP PEVPKQQLLS YELGQGHAQA SPEIRFTPFA NPTHKPLAKP KSSQETPAHS
181 SGQPPRDAKL EAKTAKASPS GQNISYIHSS SESVTPRTEG RLQQKSGSSV QKGVNSQKGK
241 CVRNGDRFQV LIGYNAELIA VFKTLPSKNY DPDTKTWNFS MNDYSALMKA AQSLPTVNLQ
301 PLEWAYGSSE SPSTSSEGQA GLPSAPSLSF VKGRCMLISR AYFEADISYS QDLIALFKQM
361 DSRRYDVKTR KWSFLLEEHS KLIAKVRCLP QVQLDPLPTT LTLAFASQLK KTSLSLTPDV
421 PEADLSEVDP KLVSNLMPFQ RAGVNFAIAK GGRLLLADDM GLGKTIQAIC IAAFYRKEWP
481 LLVVVPSSVR FTWEQAFLRW LPSLSPDCIN VVVTGKDRLT AGLINIVSFD LLSKLEKQLK
541 TPFKVVIIDE SHFLKNSRTA RCRAAMPVLK VAKRVILLSG TPAMSRPAEL YTQIIAVKPT
601 FFPQFHAFGL RYCDAKRMPW GWDYSGSSNL GELKLLLEEA VMLRRLKSDV LSQLPAKQRK
661 IVVIAPGRIN ARTRAALDAA AKEMTTKDKT KQQQKDALIL FFNRTAEAKI PSVIEYILDL
721 LESGREKFLV FAHHKVVLDA ITQELERKHV QHIRIDGSTS SAEREDLCQQ FQLSERHAVA
781 VLSITAANMG LTFSSADLVV FAELFWNPGV LIQAEDRVHR IGQTSSVGIH YLVAKGTADD
841 YLWPLIQEKI KVLAEAGLSE TNFSEMTEST DYLYKDPKQQ KIYDLFQKSF EKEGSDMELL
901 EAAESFDPGS ASGTSGSSSQ NMGDTLDESS LTASPQKKRR FEFFDNWDSF TSPLLocalizationUniProt · AlphaFold · HPA
Whether an antibody against SMARCAL1 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)
- 0.4
- Highest tissue expression
- 12 nTPM
Expression across tissuesHPA
Tissue
- thymus: 12 nTPM
- ovary: 11 nTPM
- cervix: 9.9 nTPM
- lymph node: 9.6 nTPM
- skeletal muscle: 9.5 nTPM
- blood vessel: 9.4 nTPM
Single-cell type
- adrenal cortex cells: 64 nCPM
- sertoli cells: 64 nCPM
- megakaryocyte-erythroid progenitors: 58 nCPM
- hematopoietic stem cells: 52 nCPM
- myonuclei: 52 nCPM
- retinal ganglion cells: 50 nCPM
Immune cell
- basophil: 23 nTPM
- NK-cell: 18 nTPM
- non-classical monocyte: 15 nTPM
- plasmacytoid DC: 14 nTPM
- myeloid DC: 13 nTPM
- memory CD8 T-cell: 12 nTPM
Brain region
- white matter: 14 nTPM
- thalamus: 14 nTPM
- medulla oblongata: 14 nTPM
- pons: 13 nTPM
- midbrain: 12 nTPM
- basal ganglia: 12 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about SMARCAL1.
Disease | AllUniProt
Conditions SMARCAL1 is implicated in, by any mechanism.
- Schimke immuno-osseous dysplasia (SIOD) MIM:242900
Disease | GeneticClinVar
167 pathogenic / likely-pathogenic of 1,365 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Schimke immuno-osseous dysplasia
- Nephrotic syndrome
- 9 conditions
- See cases
- SMARCAL1-related disorder
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)
- 0.61
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.84
- DepMap mean gene effect
- 0.04
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 7% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- DNA damage response
- DNA repair
- double-strand break repair via nonhomologous end joining
- regulation of transcription by RNA polymerase II
- replication fork processing
- t-circle formation
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- SNF2, N-terminal domain
- Helicase, C-terminal domain-like
- Helicase superfamily 1/2, ATP-binding domain
- P-loop containing nucleoside triphosphate hydrolase
- SNF2-like, N-terminal domain superfamily
- SNF2/RAD5-like, C-terminal helicase domain
- SNF2-related domain
- Helicase conserved C-terminal domain
- HARP domain
- HepA-related protein (HARP)
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of SMARCAL1 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 SMARCAL1 as an antibody target. Whether an autoantibody or antibody against SMARCAL1 could matter depends on whether native SMARCAL1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SMARCAL1 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 SMARCAL1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
Loading the interactive Seroatlas protein explorer...