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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P11388: Variant p.Thr1324Lys

DNA topoisomerase 2-alpha
Gene: TOP2A
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Variant information Variant position: help 1324 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B 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 Threonine (T) to Lysine (K) at position 1324 (T1324K, p.Thr1324Lys). 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 medium size and polar (T) to large size and basic (K) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -1 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

Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 1324 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1531 The length of the canonical sequence.
Location on the sequence: help DESNFDVPPRETEPRRAATK T KFTMDLDSDEDFSDFDEKTD 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                         DESNFDVPP-RETEPRRAATKTKFTMDLDSDEDFSDFDEKTD----

Mouse                         NESNVDVPP-RQKEQRSAAAKAKFTVDLDSDEDFSGLDEKD

Rat                           NESNFDVPP-REKEPRIAATKAKFTADLDSDDDFSGLDEKD

Pig                           DESNFNVPP-REKEPRRAAAKTKFTVDLDSDEDFSDADEKT

Chicken                       DD--FEVPSKRERVVRQAAAKIKPMVNSDSDADLTSSDEDS

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 – 1531 DNA topoisomerase 2-alpha
Region 1184 – 1531 Disordered
Compositional bias 1289 – 1332 Basic and acidic residues
Modified residue 1327 – 1327 Phosphothreonine
Modified residue 1332 – 1332 Phosphoserine
Modified residue 1337 – 1337 Phosphoserine
Modified residue 1343 – 1343 Phosphothreonine; by PLK3



Literature citations
No reference for the current variant in UniProtKB/Swiss-Prot.
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.