Home  |  Contact

UniProtKB/Swiss-Prot P54257: Variant p.Lys4Arg

Huntingtin-associated protein 1
Gene: HAP1
Variant information

Variant position:  4
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 Lysine (K) to Arginine (R) at position 4 (K4R, p.Lys4Arg).
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:  Similar physico-chemical property. Both residues are large size and basic.
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

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



Sequence information

Variant position:  4
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  671
The length of the canonical sequence.

Location on the sequence:   MRP  K RLGRCCAGSRLGPGDPAALT
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                         MRPKRLGRCCAGSRLGPGDPA-----------------ALT

Mouse                         MRPKEQVQSGAGDGTGSGDPA---

Rat                           MRPKDQVQSSAGDGTGSGDPA---

Baker's yeast                 RSPNMHTATTPGANTSSNSPPLHM

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 – 671 Huntingtin-associated protein 1
Region 1 – 83 Disordered


Literature citations

A human HAP1 homologue. Cloning, expression, and interaction with huntingtin.
Li S.-H.; Hosseini S.H.; Gutekunst C.-A.; Hersch S.M.; Ferrante R.J.; Li X.-J.;
J. Biol. Chem. 273:19220-19227(1998)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2); VARIANTS ARG-4; THR-58 AND LEU-560;

Human huntingtin-associated protein (HAP-1) gene: genomic organisation and an intragenic polymorphism.
Nasir J.; Lafuente M.-J.; Duan K.; Colomer V.; Engelender S.; Ingersoll R.; Margolis R.L.; Ross C.A.; Hayden M.R.;
Gene 254:181-187(2000)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1); VARIANTS ARG-4; THR-58 AND LEU-560;

Submission
Totoki Y.; Toyoda A.; Takeda T.; Sakaki Y.; Tanaka A.; Yokoyama S.; Ohara O.; Nagase T.; Kikuno R.F.;
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 2-671 (ISOFORM 3); VARIANTS ARG-4; THR-58 AND LEU-560;

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.