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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot O95477: Variant p.Asn1800His

Phospholipid-transporting ATPase ABCA1
Gene: ABCA1
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Variant information Variant position: help 1800 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 Asparagine (N) to Histidine (H) at position 1800 (N1800H, p.Asn1800His). 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 polar. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 1 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 TGD. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 1800 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 NGSVATFVLELFTDNKLNNI N DILKSVFLIFPHFCLGRGLI 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                         NGSVATFVLELFTDNKLNNINDILKSVFLIFPHFCLGRGLI

Mouse                         NGSVATFVLELFTNNKLNDINDILKSVFLIFPHFCLGRGLI

Slime mold                    -------------------------------PYF-------
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 – 2261 Phospholipid-transporting ATPase ABCA1
Helix 1796 – 1807



Literature citations
Novel mutations in the gene encoding ATP-binding cassette 1 in four tangier disease kindreds.
Brousseau M.E.; Schaefer E.J.; Dupuis J.; Eustace B.; Van Eerdewegh P.; Goldkamp A.L.; Thurston L.M.; FitzGerald M.G.; Yasek-McKenna D.; O'Neill G.; Eberhart G.P.; Weiffenbach B.; Ordovas J.M.; Freeman M.W.; Brown R.H. Jr.; Gu J.Z.;
J. Lipid Res. 41:433-441(2000)
Cited for: VARIANTS TGD ASN-1289 AND HIS-1800; Familial HDL deficiency due to ABCA1 gene mutations with or without other genetic lipoprotein disorders.
Pisciotta L.; Hamilton-Craig I.; Tarugi P.; Bellocchio A.; Fasano T.; Alessandrini P.; Bon G.B.; Siepi D.; Mannarino E.; Cattin L.; Averna M.; Cefalu A.B.; Cantafora A.; Calandra S.; Bertolini S.;
Atherosclerosis 172:309-320(2004)
Cited for: VARIANTS TGD LYS-284; CYS-482; HIS-1800; SER-1901 AND HIS-2196; Genetic variation in ABC transporter A1 contributes to HDL cholesterol in the general population.
Frikke-Schmidt R.; Nordestgaard B.G.; Jensen G.B.; Tybjaerg-Hansen A.;
J. Clin. Invest. 114:1343-1353(2004)
Cited for: VARIANT TGD HIS-1800; VARIANTS LYS-219; CYS-364; MET-771; PRO-774; ASN-776; ILE-825; MET-883; SER-1065; ASP-1172; VAL-1216 AND ARG-1587; INVOLVEMENT IN HDLCQ13; Multiple rare alleles contribute to low plasma levels of HDL cholesterol.
Cohen J.C.; Kiss R.S.; Pertsemlidis A.; Marcel Y.L.; McPherson R.; Hobbs H.H.;
Science 305:869-872(2004)
Cited for: VARIANT TGD HIS-1800; VARIANTS ALA-248; GLN-401; TRP-496; SER-590; GLN-638; SER-774; GLY-815; PHE-1181; THR-1341; GLY-1376; GLN-1615; THR-1670; GLN-1680 AND GLU-2243; INVOLVEMENT IN HDLCQ13;
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.