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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q6NXG1: Variant p.Leu259Val

Epithelial splicing regulatory protein 1
Gene: ESRP1
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Variant information Variant position: help 259 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 Leucine (L) to Valine (V) at position 259 (L259V, p.Leu259Val). 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 Similar physico-chemical property. Both residues are medium size and hydrophobic. 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 DFNB109; hypomorphic mutation affecting alternative splicing in patient-derived induced pluripotent stem cells and other cell-based assays. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 259 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 681 The length of the canonical sequence.
Location on the sequence: help QDIARFFKGLNIAKGGAALC L NAQGRRNGEALVRFVSEEHR 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                         QDIARFFKGLNIAKGGAALCLNAQGRRNGEALVRFVSEEHR

Mouse                         QDIARFFKGLNIAKGGAALCLNAQGRRNGEALVRFVSEEHR

Rat                           QDIARFFKGLNIAKGGAALCLNAQGRRNGEALVRFVSEEHR

Xenopus laevis                QDIARFFKGLNIAKGGAALCLNAQGRRNGEALVRFVSEEHR

Xenopus tropicalis            QDIARFFKGLNIAKGGAALCLNAQGRRNGEALVRFVSEEHR

Zebrafish                     QDIARFFRGLNIAKGGAALCLNAQGRRNGEALVRFESEEHR
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 – 681 Epithelial splicing regulatory protein 1
Domain 225 – 302 RRM 1
Beta strand 250 – 259



Literature citations
ESRP1 mutations cause hearing loss due to defects in alternative splicing that disrupt cochlear development.
Rohacek A.M.; Bebee T.W.; Tilton R.K.; Radens C.M.; McDermott-Roe C.; Peart N.; Kaur M.; Zaykaner M.; Cieply B.; Musunuru K.; Barash Y.; Germiller J.A.; Krantz I.D.; Carstens R.P.; Epstein D.J.;
Dev. Cell 43:318-331(2017)
Cited for: INVOLVEMENT IN DFNB109; VARIANT DFNB109 VAL-259; CHARACTERIZATION OF VARIANT DFNB109 VAL-259;
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.