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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q13496: Variant p.Leu87Pro

Myotubularin
Gene: MTM1
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Variant information Variant position: help 87 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 Leucine (L) to Proline (P) at position 87 (L87P, p.Leu87Pro). 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 hydrophobic. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 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 CNMX; mild; reduced binding to PI(3,5)P2. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 87 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 603 The length of the canonical sequence.
Location on the sequence: help NYRLYLRSLETDSSLILDVP L GVISRIEKMGGATSRGENSY 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                         NYRLYLRSLETDSSLILDVPLGVISRI--EKMGGATSRGENSY

Mouse                         NYRLYLRSLETDSALILDVPLGVISRI--EKMGGATSRGEN

Rat                           NYRLYLRSLETDLAPILDVPLGVISRI--EKMGGVTSRGEN

Bovine                        NYRLYLRSLETDSALILDVPLGVISRI--EKMGGATSRGEN

Xenopus laevis                NYKLYFKGEEMEPLITFAVPLGVIARI--EKMGGASSRGEN

Xenopus tropicalis            NYKLYFKGEEMEPLISFSVPLGVIARI--EKMGGASSRGEN

Baker's yeast                 -------AAEVPNAVSSGSKMKTFTNVGGQNLNNAKIFWES

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 – 603 Myotubularin
Domain 29 – 97 GRAM
Alternative sequence 78 – 114 Missing. In isoform 2.



Literature citations
Myotubularin regulates the function of the late endosome through the gram domain-phosphatidylinositol 3,5-bisphosphate interaction.
Tsujita K.; Itoh T.; Ijuin T.; Yamamoto A.; Shisheva A.; Laporte J.; Takenawa T.;
J. Biol. Chem. 279:13817-13824(2004)
Cited for: FUNCTION; CATALYTIC ACTIVITY; BIOPHYSICOCHEMICAL PROPERTIES; SUBCELLULAR LOCATION; ROLE OF GRAM DOMAIN; CHARACTERIZATION OF VARIANTS PHE-49; CYS-69; PHE-70 AND PRO-87; Mutations in the MTM1 gene implicated in X-linked myotubular myopathy.
Laporte J.; Guiraud-Chaumeil C.; Vincent M.-C.; Mandel J.-L.; Tanner S.M.; Liechti-Gallati S.; Wallgren-Pettersson C.; Dahl N.; Kress W.; Bolhuis P.A.; Fardeau M.; Samson F.; Bertini E.;
Hum. Mol. Genet. 6:1505-1511(1997)
Cited for: VARIANTS CNMX CYS-69; PHE-70; PRO-87; SER-189; LEU-205; PRO-229; CYS-241; ASN-376; ARG-378; CYS-397; ALA-402; GLN-421; ASN-431; ASN-433 AND PRO-469;
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.