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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P04798: Variant p.Arg464Ser

Cytochrome P450 1A1
Gene: CYP1A1
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Variant information Variant position: help 464 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 Arginine (R) to Serine (S) at position 464 (R464S, p.Arg464Ser). 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 basic (R) to small size and polar (S) 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 allele CYP1A1*5. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 464 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 512 The length of the canonical sequence.
Location on the sequence: help SEKVIIFGMGKRKCIGETIA R WEVFLFLAILLQRVEFSVPL 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                         SEKVIIFGMGKRKCIGETIARWEVFLFLAILLQRVEFSVPL

                              SEKVILFGLGKRKCIGETIARLEVFLFLAILLQQVEFSVPE

Rhesus macaque                SEKVILFGLGKRKCIGETIARWEVFLFLAILLQRVEFSVPP

Mouse                         SEKVTLFGLGKRKCIGETIGRSEVFLFLAILLQQIEFKVSP

Rat                           SEKVILFGLGKRKCIGETIGRLEVFLFLAILLQQMEFNVSP

Rabbit                        TEKVLLFGLGKRKCIGETIGRLEVFLFLATLLQQVEFSVSP

Sheep                         SEKVIIFGLGKRQCIGEIIARLEVFLFLAILLHQVEFHVTP

Cat                           SEKVILFGLGKRKCIGETIARLEVFLFLAILLQQVEFSVPQ

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 – 512 Cytochrome P450 1A1
Binding site 457 – 457 axial binding residue
Alternative sequence 190 – 512 Missing. In isoform 2.
Alternative sequence 419 – 512 Missing. In isoform 3.
Helix 460 – 477



Literature citations
Detection of known and two novel (M331I and R464S) missense mutations in the human CYP1A1 gene in a French Caucasian population.
Chevalier D.; Allorge D.; Lo-Guidice J.-M.; Cauffiez C.; Lhermitte M.; Lafitte J.-J.; Broly F.;
Hum. Mutat. 17:355-355(2001)
Cited for: VARIANTS ILE-331 AND SER-464;
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.