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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P33897: Variant p.Phe540Cys

ATP-binding cassette sub-family D member 1
Gene: ABCD1
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Variant information Variant position: help 540 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Phenylalanine (F) to Cysteine (C) at position 540 (F540C, p.Phe540Cys). 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: help Change from large size and aromatic (F) to medium size and polar (C) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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
Variant description: help In ALD. Any additional useful information about the variant.


Sequence information Variant position: help 540 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 745 The length of the canonical sequence.
Location on the sequence: help LGGLWPTYGGVLYKPPPQRM F YIPQRPYMSVGSLRDQVIYP 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         LGGLWPTYGGVLYKPPPQR----MFYIPQRPYMSVGSLRDQVIYP

Mouse                         LGGLWPTYSGVLYKPPPQR----MFYIPQRPYMSVGSLRDQ

Rat                           LGGLWPTYSGVLYKPPPQR----MFYIPQRPYMSVGSLRDQ

Zebrafish                     LSGLWPVYSGVLYKPSPDH----MFYIPQRPYMSVGTLRDQ

Drosophila                    LSGLWPIYAGELHIPRPVKDVPCMFYIPQRPYMSIGSLCDQ

Slime mold                    INGLWPFFKGSIDRPENGD----MFFLPQQPYLIFGTLEEQ
Sequence annotation in neighborhood: help 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 – 745 ATP-binding cassette sub-family D member 1
Domain 474 – 700 ABC transporter
Beta strand 539 – 542



Literature citations
X-linked adrenoleukodystrophy: ABCD1 de novo mutations and mosaicism.
Wang Y.; Busin R.; Reeves C.; Bezman L.; Raymond G.; Toomer C.J.; Watkins P.A.; Snowden A.; Moser A.; Naidu S.; Bibat G.; Hewson S.; Tam K.; Clarke J.T.; Charnas L.; Stetten G.; Karczeski B.; Cutting G.; Steinberg S.;
Mol. Genet. Metab. 104:160-166(2011)
Cited for: VARIANTS ALD LEU-139 DEL; ARG-198; ARG-266; GLU-266; TRP-401; GLN-518; PHE-523; CYS-540; LEU-560; PRO-606; HIS-617; THR-626; PRO-632; ARG-633; LYS-640 AND ASP-677;
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.