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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot O14746: Variant p.Ala716Thr

Telomerase reverse transcriptase
Gene: TERT
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Variant information Variant position: help 716 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 Alanine (A) to Threonine (T) at position 716 (A716T, p.Ala716Thr). 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 small size and hydrophobic (A) to medium size and polar (T) 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 PFBMFT1; the mutant protein is demonstrated to cause severely compromised telomerase activity. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 716 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1132 The length of the canonical sequence.
Location on the sequence: help RVRAQDPPPELYFVKVDVTG A YDTIPQDRLTEVIASIIKPQ 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                         RVRAQDPPPELYFVKVDVTGAYDTIPQDRLTEVIASIIKPQ

                              RIRAQNPAPQLYFVKVDVTGAYDALPQDRLVEVIANVIRPQ

Mouse                         RVRALDQTPRMYFVKADVTGAYDAIPQGKLVEVVANMIRHS

Rat                           RVRALDQTPRMYFVKADVTGAYDAIPQDKLVEIVANIIRRS

Bovine                        PLRARGPAPPLYFVKVDVVGAYDALPQDKLAEVIANVLQPQ

Baker's yeast                 K-KFNNVLPELYFMKFDVKSCYDSIPRMECMRILKDALKNE

Fission yeast                 KHRMFGR--KKYFVRIDIKSCYDRIKQDLMFRIVKKKLKDP
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 – 1132 Telomerase reverse transcriptase
Domain 605 – 935 Reverse transcriptase
Binding site 712 – 712
Modified residue 707 – 707 Phosphotyrosine; by SRC-type Tyr-kinases
Alternative sequence 711 – 722 Missing. In isoform 4.
Mutagenesis 707 – 707 Y -> F. Abolishes oxidative stress-induced phosphorylation and RAN binding. Impaired nuclear export and enhanced antiapoptotic activity against ROS-dependent apoptosis induction. Impaired interaction with PTPN11. No dephosphorylation by PTPN11.
Mutagenesis 712 – 712 D -> A. Loss of telomerase activity. In the absence of TR, no loss of binding to telomeric primers.
Turn 714 – 718



Literature citations
Syndrome complex of bone marrow failure and pulmonary fibrosis predicts germline defects in telomerase.
Parry E.M.; Alder J.K.; Qi X.; Chen J.J.; Armanios M.;
Blood 117:5607-5611(2011)
Cited for: VARIANTS PFBMFT1 MET-170; THR-716; PHE-841; ARG-902 AND PHE-1025; CHARACTERIZATION OF VARIANTS PFBMFT1 MET-170; THR-716; PHE-841 AND PHE-1025;
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.