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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9UBP0: Variant p.Arg503Leu

Spastin
Gene: SPAST
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Variant information Variant position: help 503 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 Leucine (L) at position 503 (R503L, p.Arg503Leu). 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 (L) 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 SPG4. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 503 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 616 The length of the canonical sequence.
Location on the sequence: help MGATNRPQELDEAVLRRFIK R VYVSLPNEETRLLLLKNLLC 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                         MGATNRPQELDEAVLRRFIKRVYVSLPNEETRLLLLKNLLC

Mouse                         MGATNRPQELDEAVLRRFIKRVYVSLPNEETRLLLLKNLLC

Rat                           MGATNRPQELDEAVLRRFIKRVYVSLPNEETRLLLLKNLLC

Pig                           MGATNRPQELDEAVLRRFIKRVYVSLPNEETRLLLLKNLLC

Bovine                        MGATNRPQELDEAVLRRFTKRVYVSLPNEETRLLLLKNLLC

Chicken                       MGATNRPQELDDAVLRRFTKRVYVSLPNEETRLILLKNLLS

Xenopus laevis                MGATNRPQELDDAVLRRFTKRVYVALPNEETRLVLLKNLLS

Xenopus tropicalis            MGATNRPQELDDAVLRRFTKRVYVSLPNEETRLLLLKNLLS

Zebrafish                     MGATNRPQELDEAVLRRFAKRIYVALPTEETRLKLLKNLLS

Caenorhabditis elegans        IGATNRPHELDDAVLRRFPKRIMLNLPDEEARKELITKTLK

Drosophila                    LAATNRPQELDEAALRRFTKRVYVSLPDEQTRELLLNRLLQ

Slime mold                    MGATNRPEDLDDAALRRLVKRIYVGLPELETRLQIIQHLLV
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 – 616 Spastin
Topological domain 78 – 616 Cytoplasmic
Region 228 – 616 Sufficient for microtubule severing
Beta strand 501 – 505



Literature citations
Screening of patients with hereditary spastic paraplegia reveals seven novel mutations in the SPG4 (Spastin) gene.
Proukakis C.; Auer-Grumbach M.; Wagner K.; Wilkinson P.A.; Reid E.; Patton M.A.; Warner T.T.; Crosby A.H.;
Hum. Mutat. 21:170-170(2003)
Cited for: VARIANT SPG4 LEU-503;
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.