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UniProtKB/Swiss-Prot P02533: Variant p.Leu419Gln

Keratin, type I cytoskeletal 14
Gene: KRT14
Variant information

Variant position:  419
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Leucine (L) to Glutamine (Q) at position 419 (L419Q, p.Leu419Gln).
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 medium size and hydrophobic (L) to medium size and polar (Q)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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

Involvement in disease:  Epidermolysis bullosa simplex, Dowling-Meara type (DM-EBS) [MIM:131760]: A severe form of intraepidermal epidermolysis bullosa characterized by generalized herpetiform blistering, milia formation, dystrophic nails, and mucous membrane involvement. {ECO:0000269|PubMed:10583131, ECO:0000269|PubMed:10730767, ECO:0000269|PubMed:10733662, ECO:0000269|PubMed:10820403, ECO:0000269|PubMed:11710919, ECO:0000269|PubMed:12603865, ECO:0000269|PubMed:12655565, ECO:0000269|PubMed:12707098, ECO:0000269|PubMed:14987259, ECO:0000269|PubMed:16786515, ECO:0000269|PubMed:16882168, ECO:0000269|PubMed:1717157, ECO:0000269|PubMed:7561171, ECO:0000269|PubMed:7688405, ECO:0000269|PubMed:8601736, ECO:0000269|PubMed:9804355, ECO:0000269|PubMed:9989794, ECO:0000269|Ref.32}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In DM-EBS.
Any additional useful information about the variant.

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



Sequence information

Variant position:  419
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  472
The length of the canonical sequence.

Location on the sequence:   KILLDVKTRLEQEIATYRRL  L EGEDAHLSSSQFSSGSQSSR
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                         KILLDVKTRLEQEIATYRRLLEGEDAHLSS------SQFSSG--SQSSR

Mouse                         KILLDVKTRLEQEIATYRRLLEGEDAHLSSSQFSSSSQFSS

Rat                           KILLDVKTRLEQEIATYRRLLEGEDAHLSSAQFSSSSQFSS

Chicken                       RVLLDVKCRLEQEIATYRRLLEGEDAHISS-------QYSS

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 – 472 Keratin, type I cytoskeletal 14
Domain 115 – 426 IF rod
Region 284 – 422 Coil 2
Modified residue 435 – 435 Phosphoserine


Literature citations

Genomic keratin 14 mutation detection in epidermolysis bullosa simplex.
Hut P.H.L.; van der Vlies P.; Jonkman M.F.; Shimizu H.; Buys C.H.C.M.; Scheffer H.;
Cited for: VARIANT K-EBS HIS-415; VARIANT DM-EBS GLN-419;

Exempting homologous pseudogene sequences from polymerase chain reaction amplification allows genomic keratin 14 hotspot analysis.
Hut P.H.L.; van der Vlies P.; Jonkman M.F.; Verlind E.; Shimizu H.; Buys C.H.C.M.; Scheffer H.;
J. Invest. Dermatol. 114:616-619(2000)
Cited for: VARIANTS DM-EBS CYS-125; HIS-125 AND GLN-419; VARIANTS K-EBS ASP-247 AND HIS-415; VARIANT WC-EBS LYS-422;

Mutation analysis of the entire keratin 5 and 14 genes in patients with epidermolysis bullosa simplex and identification of novel mutations.
Schuilenga-Hut P.H.L.; Vlies P.; Jonkman M.F.; Waanders E.; Buys C.H.C.M.; Scheffer H.;
Hum. Mutat. 21:447-447(2003)
Cited for: VARIANTS DM-EBS PRO-130 AND GLN-419; VARIANT WC-EBS MET-408;

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.