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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q70EK8: Variant p.His132Tyr

Ubiquitin carboxyl-terminal hydrolase 53
Gene: USP53
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Variant information Variant position: help 132 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 Histidine (H) to Tyrosine (Y) at position 132 (H132Y, p.His132Tyr). 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 medium size and polar (H) to large size and aromatic (Y) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 2 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 PFIC7; likely pathogenic; strongly decreased ability to catalyze deubiquitination. Any additional useful information about the variant.


Sequence information Variant position: help 132 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1073 The length of the canonical sequence.
Location on the sequence: help FQLGLMDDAAECFENMLERI H FHIVPSRDADMCTSKSCITH 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                         FQLGLMDDAAECFENMLERIHFHIVPSRDADMCTSKSCITH

Mouse                         FQLGLMDDAAECFENILARIHFHLVPNRDADMCTSKSCVTH
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 – 1073 Ubiquitin carboxyl-terminal hydrolase 53
Domain 30 – 351 USP
Binding site 132 – 132
Binding site 144 – 144
Binding site 149 – 149
Binding site 152 – 152



Literature citations
Discovery and mechanism of K63-linkage-directed deubiquitinase activity in USP53.
Wendrich K.; Gallant K.; Recknagel S.; Petroulia S.; Kazi N.H.; Hane J.A.; Fuehrer S.; Bezstarosti K.; O'Dea R.; Demmers J.; Gersch M.;
Nat. Chem. Biol. 0:0-0(2024)
Cited for: FUNCTION; CATALYTIC ACTIVITY; MUTAGENESIS OF TYR-160; CHARACTERIZATION OF VARIANTS PFIC7 SER-31; SER-99; TYR-132 AND TYR-303;
Diagnostic yield and novel candidate genes by next generation sequencing in 166 children with intrahepatic cholestasis.
Zheng Y.; Guo H.; Chen L.; Cheng W.; Yan K.; Zhang Z.; Li M.; Jin Y.; Hu G.; Wang C.; Zhou C.; Zhou W.; Jia Z.; Zheng B.; Liu Z.;
Hepatol. Int. 18:661-672(2024)
Cited for: VARIANTS PFIC7 SER-31 AND TYR-132;
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.