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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q5FBB7: Variant p.Lys23Glu

Shugoshin 1
Gene: SGO1
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Variant information Variant position: help 23 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance
Residue change: help From Lysine (K) to Glutamate (E) at position 23 (K23E, p.Lys23Glu). Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.
Physico-chemical properties: help Change from large size and basic (K) to medium size and acidic (E) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 1 The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page
Variant description: help In CAID; patient fibroblasts exhibit significantly faster cell proliferation than controls; during mitosis the mutant protein is localized in an ordered fashion around the centromeres but display a rather homogeneous cytoplasmic localization pattern. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 23 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 561 The length of the canonical sequence.
Location on the sequence: help KERCLKKSFQDSLEDIKKRM K EKRNKNLAEIGKRRSFIAAP The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.
Residue conservation: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         KERCLKKSFQDSLEDIKKRMKEKRNKNLAEIGKRRSFIAAP

Mouse                         KERCQKRSFQDTLEDIKNRMKEKRNKNLAGIGKRKSFIVAP

Xenopus laevis                KERCPKQAFQDSLEDIKERMKEKRIKKLAKVATVNKTLCTK

Caenorhabditis elegans        MDAKTAQSIFGGIVAAKKRPSKEVPE--PTI----------

Drosophila                    -----------------------------------------

Baker's yeast                 ---MPKRKIAPNKESSRRTVSHDDLT--PQIQEFQNLMDLE

Fission yeast                 ---MNFQFINSNINNEDKLPME-------------------
Sequence annotation in neighborhood: help The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.
TypePositionsDescription
Chain 1 – 561 Shugoshin 1
Region 1 – 176 Necessary for interaction with PPP2CA and PPP2R1A
Coiled coil 7 – 89
Modified residue 14 – 14 Phosphoserine; by NEK2
Mutagenesis 14 – 14 S -> A. Loss of phosphorylation and presence of misaligned chromosomes; when associated with A-507.



Literature citations
Mutations in SGOL1 cause a novel cohesinopathy affecting heart and gut rhythm.
Chetaille P.; Preuss C.; Burkhard S.; Cote J.M.; Houde C.; Castilloux J.; Piche J.; Gosset N.; Leclerc S.; Wuennemann F.; Thibeault M.; Gagnon C.; Galli A.; Tuck E.; Hickson G.R.; El Amine N.; Boufaied I.; Lemyre E.; de Santa Barbara P.; Faure S.; Jonzon A.; Cameron M.; Dietz H.C.; Gallo-McFarlane E.; Benson D.W.; Moreau C.; Labuda D.; Zhan S.H.; Shen Y.; Jomphe M.; Jones S.J.; Bakkers J.; Andelfinger G.;
Nat. Genet. 46:1245-1249(2014)
Cited for: INVOLVEMENT IN CAID; VARIANT CAID GLU-23; CHARACTERIZATION OF VARIANT CAID GLU-23;
Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.