UniProtKB/Swiss-Prot P19013: Variant p.Ala72Val

Keratin, type II cytoskeletal 4
Gene: KRT4
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Variant information Variant position:

72 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

LB/B 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 Valine (V) at position 72 (A72V, p.Ala72Val). 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 medium size and hydrophobic (V) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

0 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
Polymorphism:

Three alleles of K4 are known: K4A1, K4A2 and K4B (displayed here). Additional information on the polymorphism described.
Variant description:

In allele K4A1. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs2638525 [ dbSNP | Ensembl ]

Sequence information Variant position:

72 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

520 The length of the canonical sequence.
Location on the sequence:

LYNLRGNKSISMSVAGSRQG A CFGGAGGFGTGGFGGGFGGS 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                         LYNLRGNKSISMSVAGSRQGACFGGAG---------GFGTGGFGGGFGGS

Mouse                         LYNLGGHKSISMSVAGSCQGGGYGGAGGFGVGGYGAGFGAG

Rat                           LYNLGGHKSISMSVAGSCQGGGYGGAGGFGVGGYGAGFGAG

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.

Type	Positions	Description
Chain	1 – 520	Keratin, type II cytoskeletal 4
Region	1 – 136	Head

Literature citations
Allelic variations of human keratins K4 and K5 provide polymorphic markers within the type II keratin gene cluster on chromosome 12.
Wanner R.; Foerster H.-H.; Tilmans I.; Mischke D.;
J. Invest. Dermatol. 100:735-741(1993)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1-144; VARIANTS VAL-72 AND GLY-GLY-PHE-GLY-ALA-GLY-GLY-PHE-GLY-ALA-GLY-PHE-GLY-THR-82 INS;

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.