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UniProtKB/Swiss-Prot Q9Y463: Variant p.Arg102Cys

Dual specificity tyrosine-phosphorylation-regulated kinase 1B
Gene: DYRK1B
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Variant information Variant position: help 102 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 Arginine (R) to Cysteine (C) at position 102 (R102C, p.Arg102Cys). 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 (R) to medium size and polar (C) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 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 AOMS3; accumulation of intracellular lipid is significantly greater than with wild-type protein; cells expressing the variant are able to transform into mature adipocytes without requiring adipogenic medium; expression levels of CEBPA, PPARG forms 1 and 2 and PPARGC1A are higher and those of GLI1 and CDKN1B are lower in cells transfected with the mutant protein compared to wild-type; WNT1 signaling activity is lower in mutant cells compared to wild-type. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 102 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 629 The length of the canonical sequence.
Location on the sequence: help KKEKKVLNHGYDDDNHDYIV R SGERWLERYEIDSLIGKGSF 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                         KKEKKVLNHGYDDDNHDYIVRSGERWLERYEIDSLIGKGSF

Mouse                         KKEKKVLNHGYDDDNHDYIVRSGERWLERYEIDSLIGKGSF
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 – 629 Dual specificity tyrosine-phosphorylation-regulated kinase 1B
Modified residue 92 – 92 Phosphotyrosine
Modified residue 111 – 111 Phosphotyrosine



Literature citations
A form of the metabolic syndrome associated with mutations in DYRK1B.
Keramati A.R.; Fathzadeh M.; Go G.W.; Singh R.; Choi M.; Faramarzi S.; Mane S.; Kasaei M.; Sarajzadeh-Fard K.; Hwa J.; Kidd K.K.; Babaee Bigi M.A.; Malekzadeh R.; Hosseinian A.; Babaei M.; Lifton R.P.; Mani A.;
N. Engl. J. Med. 370:1909-1919(2014)
Cited for: FUNCTION; VARIANTS AOMS3 PRO-90 AND CYS-102; CHARACTERIZATION OF VARIANTS AOMS3 PRO-90 AND CYS-102;
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.