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UniProtKB/Swiss-Prot P21439 : Variant p.Ser1183Leu
Phosphatidylcholine translocator ABCB4
Gene: ABCB4
Variant information
Variant position: 1183 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: LP/P [Disclaimer : Variants classification is intended for research purposes only, not for clinical and diagnostic use . The label disease variant is assigned according to literature reports on probable disease-association that can be based on theoretical reasons. This label must not be considered as a definitive proof for the pathogenic role of a variant. ]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 Serine (S) to Leucine (L) at position 1183 (S1183L, p.Ser1183Leu).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 small size and polar (S) to medium size and hydrophobic (L)The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: -2The 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 GBD1; severely reduced phosphatidylcholine transporter activity; does not alter plasma membrane location.Any additional useful information about the variant.
Sequence information
Variant position: 1183 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: 1286 The length of the canonical sequence.
Location on the sequence:
FIETLPHKYETRVGDKGTQL
S GGQKQRIAIARALIRQPQIL
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.
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.
Type Positions Description
Chain
1 – 1286
Phosphatidylcholine translocator ABCB4
Topological domain
995 – 1286
Cytoplasmic
Domain
1034 – 1279
ABC transporter 2
Literature citations
Functional defect of variants in the adenosine triphosphate-binding sites of ABCB4 and their rescue by the cystic fibrosis transmembrane conductance regulator potentiator, ivacaftor (VX-770).
Delaunay J.L.; Bruneau A.; Hoffmann B.; Durand-Schneider A.M.; Barbu V.; Jacquemin E.; Maurice M.; Housset C.; Callebaut I.; Ait-Slimane T.;
Hepatology 65:560-570(2017)
Cited for: CHARACTERIZATION OF VARIANTS GBD1 ARG-536; LEU-726; LEU-1183 AND SER-1185; CHARACTERIZATION OF VARIANT PFIC3 ASP-535; SUBCELLULAR LOCATION; FUNCTION;
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.