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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot O95477: Variant p.Leu2168Pro

Phospholipid-transporting ATPase ABCA1
Gene: ABCA1
Variant information Variant position: help 2168 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Leucine (L) to Proline (P) at position 2168 (L2168P, p.Leu2168Pro). 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 Similar physico-chemical property. Both residues are medium size and hydrophobic. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 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: help Genetic variations in ABCA1 define the high density lipoprotein cholesterol level quantitative trait locus 13 (HDLCQ13) [MIM:600046]. Additional information on the polymorphism described.
Other resources: help Links to websites of interest for the variant.

Sequence information Variant position: help 2168 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 2261 The length of the canonical sequence.
Location on the sequence: help SNPDLKPVQDFFGLAFPGSV L KEKHRNMLQYQLPSSLSSLA 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.



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.
Chain 1 – 2261 Phospholipid-transporting ATPase ABCA1
Beta strand 2168 – 2170

Literature citations
Molecular cloning of the human ATP-binding cassette transporter 1 (hABC1): evidence for sterol-dependent regulation in macrophages.
Langmann T.; Klucken J.; Reil M.; Liebisch G.; Luciani M.-F.; Chimini G.; Kaminski W.E.; Schmitz G.;
Biochem. Biophys. Res. Commun. 257:29-33(1999)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 21-2261; VARIANTS THR-1555; ARG-1587; PRO-1648 AND PRO-2168; Tangier disease is caused by mutations in the gene encoding ATP-binding cassette transporter 1.
Rust S.; Rosier M.; Funke H.; Real J.; Amoura Z.; Piette J.-C.; Deleuze J.-F.; Brewer H.B. Jr.; Duverger N.; Denefle P.; Assmann G.;
Nat. Genet. 22:352-355(1999)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] OF 21-2261; VARIANTS THR-1555; ARG-1587; PRO-1648 AND PRO-2168; A point mutation in ABC1 gene in a patient with severe premature coronary heart disease and mild clinical phenotype of Tangier disease.
Bertolini S.; Pisciotta L.; Seri M.; Cusano R.; Cantafora A.; Calabresi L.; Franceschini G.; Ravazzolo R.; Calandra S.;
Atherosclerosis 154:599-605(2001)
Cited for: VARIANT TGD TRP-587; VARIANT PRO-2168;
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.