UniProtKB/Swiss-Prot P78385: Variant p.Glu407Lys

Keratin, type II cuticular Hb3
Gene: KRT83
Chromosomal location: 12q13
Variant information

Variant position:  407
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 have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Glutamate (E) to Lysine (K) at position 407 (E407K, p.Glu407Lys).
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 acidic (E) to large size and basic (K)
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 MLTRX.
Any additional useful information about the variant.



Sequence information

Variant position:  407
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  493
The length of the canonical sequence.

Location on the sequence:   MACLIREYQEVMNSKLGLDI  E IATYRRLLEGEEQRLCEGVE
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                         MACLIREYQEVMNSKLGLDIEIATYRRLLEGEEQRLCEGVE

Mouse                         MACLLKEYQEVMNSKLGLDVEIITYRRLLEGEEQRLCEGVG

Bovine                        MACLLKEYQEVMNSKLGLDIEIATYRRLLEGEEQRLCEGVG

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 – 493 Keratin, type II cuticular Hb3
Region 112 – 418 Rod
Region 275 – 418 Coil 2


Literature citations

A missense mutation in the type II hair keratin hHb3 is associated with monilethrix.
van Steensel M.A.; Steijlen P.M.; Bladergroen R.S.; Vermeer M.; van Geel M.;
J. Med. Genet. 42:E19-E19(2005)
Cited for: VARIANT MLTRX LYS-407;

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.