Home  |  Contact
Due to maintenance work, this service and ftp://ftp.expasy.org will be unavailable from Tuesday August 23rd 18:00 until Wednesday August 24th 08:00 CEST. Apologies for the inconvenience.

UniProtKB/Swiss-Prot O95831: Variant p.Thr260Ala

Apoptosis-inducing factor 1, mitochondrial
Gene: AIFM1
Variant information

Variant position:  260
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Threonine (T) to Alanine (A) at position 260 (T260A, p.Thr260Ala).
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 (T) to small size and hydrophobic (A)
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 DFNX5.
Any additional useful information about the variant.

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

Sequence information

Variant position:  260
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  613
The length of the canonical sequence.

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.






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.

Chain 102 – 613 Apoptosis-inducing factor 1, mitochondrial
Region 134 – 483 FAD-dependent oxidoreductase
Modified residue 268 – 268 Phosphoserine
Cross 255 – 255 Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Alternative sequence 1 – 352 Missing. In isoform 5.
Alternative sequence 36 – 322 Missing. In isoform 2.
Alternative sequence 44 – 613 Missing. In isoform 6.

Literature citations

Mutations in apoptosis-inducing factor cause X-linked recessive auditory neuropathy spectrum disorder.
Zong L.; Guan J.; Ealy M.; Zhang Q.; Wang D.; Wang H.; Zhao Y.; Shen Z.; Campbell C.A.; Wang F.; Yang J.; Sun W.; Lan L.; Ding D.; Xie L.; Qi Y.; Lou X.; Huang X.; Shi Q.; Chang S.; Xiong W.; Yin Z.; Yu N.; Zhao H.; Wang J.; Wang J.; Salvi R.J.; Petit C.; Smith R.J.; Wang Q.;
J. Med. Genet. 52:523-531(2015)
Cited for: INVOLVEMENT IN DFNX5; VARIANTS DFNX5 ALA-260; PHE-344; ARG-360; GLN-422; TRP-422; CYS-430; GLN-451; VAL-472; LEU-475; MET-498 AND MET-591;

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.