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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P43034: Variant p.Arg241Pro

Platelet-activating factor acetylhydrolase IB subunit beta
Gene: PAFAH1B1
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Variant information Variant position: help 241 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 Arginine (R) to Proline (P) at position 241 (R241P, p.Arg241Pro). 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 medium size and hydrophobic (P) 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 SBH; somatic mosaicism in 18% of lymphocytes and 21% of hair root cells. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 241 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 410 The length of the canonical sequence.
Location on the sequence: help VQTGYCVKTFTGHREWVRMV R PNQDGTLIASCSNDQTVRVW 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                         VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Chimpanzee                    VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Mouse                         VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Rat                           VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Pig                           VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Bovine                        VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Cat                           VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Chicken                       VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Xenopus laevis                VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Xenopus tropicalis            VQTGYCVKTFTGHREWVRMVRPNQDGTLIASCSNDQTVRVW

Caenorhabditis elegans        ISTGYCVYTFRGHNDWVRMIRISNDGTLFASASLDQTVTVW

Drosophila                    VATGYCVKTYTGHREWVRMVRVHIEGSIFATCSNDQTIRVW

Slime mold                    AATGYCIKTLVGHEDWVRKITVSEDGSCIASCSNDQTIKTW

Baker's yeast                 FHNGWSLKTFQPHSQWVRSI--DVLGDYIISGSHDTTLRLT
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 – 410 Platelet-activating factor acetylhydrolase IB subunit beta
Repeat 232 – 271 WD 4
Region 83 – 410 Interaction with dynein and dynactin
Alternative sequence 237 – 237 V -> I. In isoform 2.
Alternative sequence 238 – 410 Missing. In isoform 2.
Beta strand 237 – 242



Literature citations
Mosaic mutations of the LIS1 gene cause subcortical band heterotopia.
Sicca F.; Kelemen A.; Genton P.; Das S.; Mei D.; Moro F.; Dobyns W.B.; Guerrini R.;
Neurology 61:1042-1046(2003)
Cited for: VARIANT SBH PRO-241;
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.