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UniProtKB/Swiss-Prot P50542: Variant p.Asn526Lys

Peroxisomal targeting signal 1 receptor
Gene: PEX5
Variant information

Variant position:  526
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Asparagine (N) to Lysine (K) at position 526 (N526K, p.Asn526Lys).
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 polar (N) to large size and basic (K)
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

Variant description:  In PBD2B; neonatal adrenoleukodystrophy; strongly affects peroxisomal protein import.
Any additional useful information about the variant.

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



Sequence information

Variant position:  526
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  639
The length of the canonical sequence.

Location on the sequence:   KAVDCFTAALSVRPNDYLLW  N KLGATLANGNQSEEAVAAYR
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                         KAVDCFTAALSVRPNDYLLWNKLGATLANGNQSEEAVAAYR

Mouse                         KAVDCFTAALSVRPNDYLMWNKLGATLANGNQSEEAVAAYR

Rat                           KAVDCFTAALSVRPNDYLLWNKLGATLANGNQSEEAVAAYR

Bovine                        KAVDCFTAALSVRPDDYLLWNKLGATLANGNQSEEAVAAYR

Chicken                       KAVDCFSAALSVRPNDHLLWNKLGATLANGNRSEEAVAAYR

Slime mold                    KAVDCFKAALQNSPTDYQLWNKLGATLANSNRSQEALGAYF

Baker's yeast                 KTIDCFESALRVNPNDELMWNRLGASLANSNRSEEAIQAYH

Fission yeast                 RSADCFRQALQDEPSNEILWNKLGAALTNAEKNTEAVSSYN

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 – 639 Peroxisomal targeting signal 1 receptor
Repeat 522 – 555 TPR 6
Helix 522 – 534


Literature citations

Mutations in the PTS1 receptor gene, PXR1, define complementation group 2 of the peroxisome biogenesis disorders.
Dodt G.; Braverman N.; Wong C.; Moser A.; Moser H.W.; Watkins P.; Valle D.; Gould S.J.;
Nat. Genet. 9:115-125(1995)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2); INVOLVEMENT IN PBD2A; VARIANT PBD2B LYS-526; FUNCTION; SUBCELLULAR LOCATION; TISSUE SPECIFICITY;

Functional heterogeneity of C-terminal peroxisome targeting signal 1 in PEX5-defective patients.
Shimozawa N.; Zhang Z.; Suzuki Y.; Imamura A.; Tsukamoto T.; Osumi T.; Fujiki Y.; Orii T.; Barth P.G.; Wanders R.J.; Kondo N.;
Biochem. Biophys. Res. Commun. 262:504-508(1999)
Cited for: VARIANTS PBD2B LYS-526 AND TRP-600; CHARACTERIZATION OF VARIANTS PBD2B LYS-526 AND TRP-600;

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.