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UniProtKB/Swiss-Prot P21675: Variant p.Arg1431His

Transcription initiation factor TFIID subunit 1
Gene: TAF1
Variant information

Variant position:  1431
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  US
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:  From Arginine (R) to Histidine (H) at position 1431 (R1431H, p.Arg1431His).
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 large size and basic (R) to medium size and polar (H)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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:  In MRXS33; unknown pathological significance.
Any additional useful information about the variant.



Sequence information

Variant position:  1431
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1872
The length of the canonical sequence.

Location on the sequence:   AKVVKDYYKIITRPMDLQTL  R ENVRKRLYPSREEFREHLEL
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.

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 1 – 1872 Transcription initiation factor TFIID subunit 1
Domain 1397 – 1467 Bromo 1
Domain 1425 – 1872 Protein kinase 2
Region 1342 – 1629 Interaction with ASF1A and ASF1B
Helix 1427 – 1435


Literature citations

TAF1 Variants Are Associated with Dysmorphic Features, Intellectual Disability, and Neurological Manifestations.
O'Rawe J.A.; Wu Y.; Doerfel M.J.; Rope A.F.; Au P.Y.; Parboosingh J.S.; Moon S.; Kousi M.; Kosma K.; Smith C.S.; Tzetis M.; Schuette J.L.; Hufnagel R.B.; Prada C.E.; Martinez F.; Orellana C.; Crain J.; Caro-Llopis A.; Oltra S.; Monfort S.; Jimenez-Barron L.T.; Swensen J.; Ellingwood S.; Smith R.; Fang H.; Ospina S.; Stegmann S.; Den Hollander N.; Mittelman D.; Highnam G.; Robison R.; Yang E.; Faivre L.; Roubertie A.; Riviere J.B.; Monaghan K.G.; Wang K.; Davis E.E.; Katsanis N.; Kalscheuer V.M.; Wang E.H.; Metcalfe K.; Kleefstra T.; Innes A.M.; Kitsiou-Tzeli S.; Rosello M.; Keegan C.E.; Lyon G.J.;
Am. J. Hum. Genet. 97:922-932(2015)
Cited for: INVOLVEMENT IN MRXS33; VARIANTS MRXS33 SER-575; ARG-786; HIS-955; TRP-1225; THR-1316; HIS-1431 AND HIS-1496;

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.