RGD Reference Report - Association of mammalian SMC1 and SMC3 proteins with meiotic chromosomes and synaptonemal complexes. - Rat Genome Database

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Association of mammalian SMC1 and SMC3 proteins with meiotic chromosomes and synaptonemal complexes.

Authors: Eijpe, M  Heyting, C  Gross, B  Jessberger, R 
Citation: Eijpe M, etal., J Cell Sci 2000 Feb;113 ( Pt 4):673-82.
RGD ID: 1331378
Pubmed: PMID:10652260   (View Abstract at PubMed)

In somatic cells, the heterodimeric Structural Maintenance of Chromosomes (SMC) proteins are involved in chromosome condensation and gene dosage compensation (SMC2 and 4), and sister chromatid cohesion and DNA recombination (SMC1 and 3). We report here evidence for an involvement of mammalian SMC1 and SMC3 proteins in meiosis. Immunofluorescence analysis of testis sections showed intense chromatin association in meiotic prophase cells, weaker staining in round spermatids and absence of the SMC proteins in elongated spermatids. In spermatocyte nuclei spreads, the SMC1 and SMC3 proteins localize in a beaded structure along the axial elements of synaptonemal complexes of pachytene and diplotene chromosomes. Both SMC proteins are present in rat spermatocytes and enriched in preparations of synaptonemal complexes. Several independent experimental approaches revealed interactions of the SMC proteins with synaptonemal complex-specific proteins SCP2 and SCP3. These results suggest a model for the arrangement of SMC proteins in mammalian meiotic chromatin.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Smc1aRatmeiotic cell cycle involved_inIDA PMID:10652260UniProt 
Smc1aRatmeiotic cell cycle  IEP  RGD 
Smc3Ratmeiotic cell cycle  IEP  RGD 

Cellular Component

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Smc1aRatlateral element  IDA MMO:0000662RGD 
Smc1aRatnucleoplasm  IDA MMO:0000662RGD 
Smc1aRatsynaptonemal complex  IDA MMO:0000679RGD 
Smc3Ratsynaptonemal complex  IDA MMO:0000679RGD 

Objects Annotated

Genes (Rattus norvegicus)
Smc1a  (structural maintenance of chromosomes 1A)
Smc3  (structural maintenance of chromosomes 3)


Additional Information