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UniProtKB/Swiss-Prot Q08209: Variant p.Asn150Ile

Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform
Gene: PPP3CA
Variant information

Variant position:  150
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Asparagine (N) to Isoleucine (I) at position 150 (N150I, p.Asn150Ile).
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:  Change from medium size and polar (N) to medium size and hydrophobic (I)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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:  In IECEE1.
Any additional useful information about the variant.



Sequence information

Variant position:  150
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  521
The length of the canonical sequence.

Location on the sequence:   VLYLWALKILYPKTLFLLRG  N HECRHLTEYFTFKQECKIKY
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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         VLYLWALKILYPKTLFLLRGNHECRHLTEYFTFKQECKIKY

Mouse                         VLYLWALKILYPKTLFLLRGNHECRHLTEYFTFKQECKIKY

Rat                           VLYLWALKILYPKTLFLLRGNHECRHLTEYFTFKQECKIKY

Bovine                        VLYLWALKILYPKTLFLLRGNHECRHLTEYFTFKQECKIKY

Slime mold                    IIYLYACKINYPNTFFLLRGNHECRHLTEYFTFKEECLHKY

Sequence annotation in neighborhood:  
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 2 – 521 Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform
Region 56 – 340 Catalytic
Active site 151 – 151 Proton donor
Metal binding 150 – 150 Zinc
Alternative sequence 87 – 318 Missing. In isoform 4.


Literature citations

Loss-of-function and gain-of-function mutations in PPP3CA cause two distinct disorders.
Mizuguchi T.; Nakashima M.; Kato M.; Okamoto N.; Kurahashi H.; Ekhilevitch N.; Shiina M.; Nishimura G.; Shibata T.; Matsuo M.; Ikeda T.; Ogata K.; Tsuchida N.; Mitsuhashi S.; Miyatake S.; Takata A.; Miyake N.; Hata K.; Kaname T.; Matsubara Y.; Saitsu H.; Matsumoto N.;
Hum. Mol. Genet. 27:1421-1433(2018)
Cited for: VARIANTS ACCIID LEU-470 AND THR-473; INVOLVEMENT IN ACCIID; VARIANTS IECEE1 ARG-92; ILE-150 AND GLU-234;

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.