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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q08209: Variant p.His281Gln

Protein phosphatase 3 catalytic subunit alpha
Gene: PPP3CA
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Variant information Variant position: help 281 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 Histidine (H) to Glutamine (Q) at position 281 (H281Q, p.His281Gln). 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 polar. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 0 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 IECEE1. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 281 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 521 The length of the canonical sequence.
Location on the sequence: help SYPAVCEFLQHNNLLSILRA H EAQDAGYRMYRKSQTTGFPS 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                         SYPAVCEFLQHNNLLSILRAHEAQDAGYRMYRKSQTTGFPS

Mouse                         SYPAVCDFLQHNNLLSILRAHEAQDAGYRMYRKSQTTGFPS

Rat                           SYPAVCDFLQHNNLLSILRAHEAQDAGYRMYRKSQTTGFPS

Bovine                        SYPAVCEFLQHNNLLSILRAHEAQDAGYRMYRKSQTTGFPS

Slime mold                    SYRAVCSFLQKNKLLSVIRAHEAQNAGYKMHLQNDATGFPS
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 2 – 521 Protein phosphatase 3 catalytic subunit alpha
Region 56 – 340 Catalytic
Binding site 281 – 281
Alternative sequence 87 – 318 Missing. In isoform 4.
Mutagenesis 288 – 288 Y -> F. Partial loss of Ca(2+)-mediated transcription factor NFAT activation; when associated with F-341.
Mutagenesis 288 – 288 Y -> NA. Loss of Ca(2+)-mediated transcription factor NFAT activation; when associated with F-341.



Literature citations
De Novo Mutations in PPP3CA Cause Severe Neurodevelopmental Disease with Seizures.
Myers C.T.; Stong N.; Mountier E.I.; Helbig K.L.; Freytag S.; Sullivan J.E.; Ben Zeev B.; Nissenkorn A.; Tzadok M.; Heimer G.; Shinde D.N.; Rezazadeh A.; Regan B.M.; Oliver K.L.; Ernst M.E.; Lippa N.C.; Mulhern M.S.; Ren Z.; Poduri A.; Andrade D.M.; Bird L.M.; Bahlo M.; Berkovic S.F.; Lowenstein D.H.; Scheffer I.E.; Sadleir L.G.; Goldstein D.B.; Mefford H.C.; Heinzen E.L.;
Am. J. Hum. Genet. 101:516-524(2017)
Cited for: INVOLVEMENT IN IECEE1; VARIANTS IECEE1 ARG-92; GLN-281; LYS-282; 445-GLN--GLN-521 DEL AND THR-447;
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.