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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q13144: Variant p.Asp270His

Translation initiation factor eIF2B subunit epsilon
Gene: EIF2B5
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Variant information Variant position: help 270 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 Aspartate (D) to Histidine (H) at position 270 (D270H, p.Asp270His). 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 acidic (D) to medium size and polar (H) 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
Variant description: help In VWM5. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 270 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 721 The length of the canonical sequence.
Location on the sequence: help SICSPQVAQLFTDNFDYQTR D DFVRGLLVNEEILGNQIHMH 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                         SICSPQVAQLFTDNFDYQT-RDDFVRGLLVNEEILGNQIHMH

Mouse                         SICSPQVAQLFTDNFDYQT-RDDFVRGILMNEEVLGNQIHL

Rat                           SICSPQVAQLFTDNFDYQT-RDDFVRGLLVNEEILGNQIHL

Rabbit                        SICSPQVAQLFTDNFDYQT-RDDFVRGLLVNEEILGNQIHM

Slime mold                    DICSPEVLALFNDNFDFADIRKDFIHDIL-TSDLLDYKLSA

Baker's yeast                 DICTSHVPLIFQENFDYQSLRTDFVKGVI-SSDILGKHIYA

Fission yeast                 DICSNDVPALFTENFDYQDIRKDFVYGVL-TSDLLGKKIHC
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 – 721 Translation initiation factor eIF2B subunit epsilon
Helix 269 – 278



Literature citations
Adult-onset leukoencephalopathies with vanishing white matter with novel missense mutations in EIF2B2, EIF2B3, and EIF2B5.
Matsukawa T.; Wang X.; Liu R.; Wortham N.C.; Onuki Y.; Kubota A.; Hida A.; Kowa H.; Fukuda Y.; Ishiura H.; Mitsui J.; Takahashi Y.; Aoki S.; Takizawa S.; Shimizu J.; Goto J.; Proud C.G.; Tsuji S.;
Neurogenetics 12:259-261(2011)
Cited for: VARIANT VWM5 HIS-270;
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.