O42649 · SMC3_SCHPO

Function

function

Involved in chromosome cohesion during cell cycle and in DNA repair. Central component of cohesin complex. The cohesin complex is required for the cohesion of sister chromatids after DNA replication. The cohesin complex apparently forms a large proteinaceous ring within which sister chromatids can be trapped. At anaphase, the complex is cleaved and dissociates from chromatin, allowing sister chromatids to segregate.

Features

Showing features for binding site.

111941002003004005006007008009001,0001,100
TypeIDPosition(s)Description
Binding site32-39ATP (UniProtKB | ChEBI)

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentchromosome
Cellular Componentcohesin complex
Cellular Componentcondensed chromosome, centromeric region
Cellular Componentcytosol
Cellular Componentmeiotic cohesin complex
Cellular Componentmitotic cohesin complex
Cellular Componentnucleus
Molecular FunctionATP binding
Molecular FunctionATP hydrolysis activity
Molecular FunctionDNA binding
Biological Processcell division
Biological Processchromatin looping
Biological Processmitotic sister chromatid cohesion

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Structural maintenance of chromosomes protein 3
  • Alternative names
    • Cohesin complex Psm3 subunit

Gene names

    • Name
      psm3
    • Synonyms
      smc3
    • ORF names
      SPAC10F6.09c

Organism names

Accessions

  • Primary accession
    O42649

Proteomes

Organism-specific databases

Subcellular Location

Nucleus
Chromosome
Note: Associates with chromatin. Before prophase it is scattered along chromosome arms. At anaphase, the rad21 subunit of the cohesin complex is cleaved, leading to the dissociation of the complex from chromosomes, allowing chromosome separation.

Keywords

PTM/Processing

Features

Showing features for chain, modified residue.

TypeIDPosition(s)Description
ChainPRO_00001190141-1194Structural maintenance of chromosomes protein 3
Modified residue105N6-acetyllysine
Modified residue106N6-acetyllysine

Post-translational modification

Acetylation at Lys-105 and Lys-106 by ECO1 is important for genome stability and S phase sister chromatid cohesion.

Keywords

Proteomic databases

PTM databases

Interaction

Subunit

Cohesin complexes are composed of the psm1/smc1 and psm3/smc3 heterodimer attached via their SMC hinge domain, rad21/scc1 which link them, and psc3/scc3, which interacts with rad21.

Binary interactions

TypeEntry 1Entry 2Number of experimentsIntact
BINARY O42649mis4 Q097253EBI-1151879, EBI-16083239
BINARY O42649psm1 O943833EBI-1151879, EBI-1151900

Protein-protein interaction databases

Family & Domains

Features

Showing features for coiled coil, domain.

TypeIDPosition(s)Description
Coiled coil176-497
Domain522-634SMC hinge
Coiled coil668-908
Coiled coil970-1006

Domain

The flexible SMC hinge domain, which separates the large intramolecular coiled coil regions, allows the heterotypic interaction with the corresponding domain of psm1, forming a V-shaped heterodimer. The two heads of the heterodimer are then connected by different ends of the cleavable rad21 protein, forming a ring structure (By similarity).

Sequence similarities

Belongs to the SMC family. SMC3 subfamily.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    1,194
  • Mass (Da)
    136,850
  • Last updated
    1998-06-01 v1
  • Checksum
    FD4D1E81A9E2E423
MYITKIVIQGFKSYKDYTVIEPLSPHHNVIVGRNGSGKSNFFAAIRFVLSDAYTHLSREERQALLHEGPGATVMSAYVEVTFANADNRFPTGKSEVVLRRTIGLKKDEYSLDKKTVSKTEVINLLESAGFSRSNPYYIVPQGRVTSLTNAKDSERLELLKEVAGTQIYENRRAESNKIMDETIQKSEKIDELLQYIEERLRELEEEKNDLAVYHKKDNERRCLEYAIYSREHDEINSVLDALEQDRIAALERNDDDSGAFIQREERIERIKAEITELNHSLELLRVEKQQNDEDYTNIMKSKVALELQSSQLSRQIEFSKKDESSKLNILSELESKISEKENELSEILPKYNAIVSEADDLNKRIMLLKNQKQSLLDKQSRTSQFTTKKERDEWIRNQLLQINRNINSTKENSDYLKTEYDEMENELKAKLSRKKEIEISLESQGDRMSQLLANITSINERKENLTDKRKSLWREEAKLKSSIENVKDDLSRSEKALGTTMDRNTSNGIRAVKDIAERLKLEGYYGPLCELFKVDNRFKVAVEATAGNSLFHIVVDNDETATQILDVIYKENAGRVTFMPLNKLRPKAVTYPDASDALPLIQYLEFDPKFDAAIKQVFSKTIVCPSIETASQYARSHQLNGITLSGDRSDKKGALTAGYRDYRNSRLDAIKNVKTYQIKFSDLQESLEKCRSEIESFDQKITACLDDLQKAQLSLKQFERDHIPLKDELVTITGETTDLQESMHHKSRMLELVVLELHTLEQQANDLKSELSSEMDELDPKDVEALKSLSGQIENLSHEFDAIIKERAHIEARKTALEYELNTNLYLRRNPLKAEIGSDNRIDESELNSVKRSLLKYENKLQIIKSSSSGLEEQMQRINSEISDKRNELESLEELQHEVATRIEQDAKINERNAAKRSLLLARKKECNEKIKSLGVLPEEAFIKYVSTSSNAIVKKLHKINEALKDYGSVNKKAYEQFNNFTKQRDSLLARREELRRSQESISELTTVLDQRKDEAIERTFKQVAKSFSEIFVKLVPAGRGELVMNRRSELSQSIEQDISMDIDTPSQKSSIDNYTGISIRVSFNSKDDEQLNINQLSGGQKSLCALTLIFAIQRCDPAPFNILDECDANLDAQYRSAIAAMVKEMSKTSQFICTTFRPEMVKVADNFYGVMFNHKVSTVESISKEEAMAFVEG

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CU329670
EMBL· GenBank· DDBJ
CAA15722.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
FeedbackHelp