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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q96CW1: Variant p.Arg170Trp

AP-2 complex subunit mu
Gene: AP2M1
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Variant information Variant position: help 170 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 Tryptophan (W) at position 170 (R170W, p.Arg170Trp). 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 large size and aromatic (W) 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 MRD60; reduced clathrin-mediated endocytosis; no effect on clathrin-coated pit location; no effect on protein stability and membrane recruitment. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 170 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 435 The length of the canonical sequence.
Location on the sequence: help QITSQVTGQIGWRREGIKYR R NELFLDVLESVNLLMSPQGQ 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                         QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Mouse                         QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Rat                           QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Bovine                        QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Chicken                       QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Xenopus laevis                QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

Xenopus tropicalis            QITSQVTGQIGWRREGIKYRRNELFLDVLESVNLLMSPQGQ

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 – 435 AP-2 complex subunit mu
Domain 170 – 434 MHD
Modified residue 156 – 156 Phosphothreonine; by AAK1



Literature citations
A Recurrent Missense Variant in AP2M1 Impairs Clathrin-Mediated Endocytosis and Causes Developmental and Epileptic Encephalopathy.
Helbig I.; Lopez-Hernandez T.; Shor O.; Galer P.; Ganesan S.; Pendziwiat M.; Rademacher A.; Ellis C.A.; Huempfer N.; Schwarz N.; Seiffert S.; Peeden J.; Shen J.; Sterbova K.; Hammer T.B.; Moeller R.S.; Shinde D.N.; Tang S.; Smith L.; Poduri A.; Krause R.; Benninger F.; Helbig K.L.; Haucke V.; Weber Y.G.;
Am. J. Hum. Genet. 104:1060-1072(2019)
Cited for: VARIANT MRD60 TRP-170; CHARACTERIZATION OF VARIANT MRD60 TRP-170; FUNCTION; SUBCELLULAR LOCATION; INVOLVEMENT IN MRD60;
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.