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UniProtKB/Swiss-Prot P52952: Variant p.Ala119Ser

Homeobox protein Nkx-2.5
Gene: NKX2-5
Variant information

Variant position:  119
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Alanine (A) to Serine (S) at position 119 (A119S, p.Ala119Ser).
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:  Change from small size and hydrophobic (A) to small size and polar (S)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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:  In CHNG5; exhibits a significant functional impairment with reduction of transactivation properties and dominant-negative effect which was associated with reduced DNA binding.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  119
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  324
The length of the canonical sequence.

Location on the sequence:   DPDPAKDPRAEKKELCALQK  A VELEKTEADNAERPRARRRR
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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         DPDPAKDPRAEKKELCALQKAVELEKTEADNAERPRARRRR

Mouse                         DPDPAKDPRADKKELCALQKAVELDKAETDGAERPRARRRR

Rat                           DPDPAKDPRADKKELCALQKAVELDKAETDGAERRRPRRRR

Chicken                       EMDTAKDSKADKKELCALHKSLEQEKRELEDPERPRQRKRR

Xenopus laevis                EMD-SKDPKDHKKDICPLQKTLEHDKREAEDPERPRQRKRR

Sequence annotation in neighborhood:  
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 – 324 Homeobox protein Nkx-2.5
Alternative sequence 112 – 151 ELCALQKAVELEKTEADNAERPRARRRRKPRVLFSQAQVY -> GCELPRGQRPPVLFSSALSQPDFLQMLSETCRWLPVHLAE. In isoform 2.
Alternative sequence 112 – 112 E -> A. In isoform 3.
Alternative sequence 113 – 324 Missing. In isoform 3.


Literature citations

Missense mutation in the transcription factor NKX2-5: a novel molecular event in the pathogenesis of thyroid dysgenesis.
Dentice M.; Cordeddu V.; Rosica A.; Ferrara A.M.; Santarpia L.; Salvatore D.; Chiovato L.; Perri A.; Moschini L.; Fazzini C.; Olivieri A.; Costa P.; Stoppioni V.; Baserga M.; De Felice M.; Sorcini M.; Fenzi G.; Di Lauro R.; Tartaglia M.; Macchia P.E.;
J. Clin. Endocrinol. Metab. 91:1428-1433(2006)
Cited for: VARIANTS CHNG5 CYS-25; SER-119 AND PRO-161; CHARACTERIZATION OF VARIANTS CHNG5 CYS-25; SER-119 AND PRO-161;

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.