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UniProtKB/Swiss-Prot P11166: Variant p.Lys256Glu

Solute carrier family 2, facilitated glucose transporter member 1
Gene: SLC2A1
Variant information

Variant position:  256
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 Lysine (K) to Glutamate (E) at position 256 (K256E, p.Lys256Glu).
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 (K) to medium size and acidic (E)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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:  In GLUT1DS1.
Any additional useful information about the variant.

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



Sequence information

Variant position:  256
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  492
The length of the canonical sequence.

Location on the sequence:   DVTHDLQEMKEESRQMMREK  K VTILELFRSPAYRQPILIAV
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.

Human                         DVTHDLQEMKEESRQMMREKKVTILELFRSPAYRQPILIAV

Mouse                         DVTRDLQEMKEEGRQMMREKKVTILELFRSPAYRQPILIAV

Rat                           DVTRDLQEMKEEGRQMMREKKVTILELFRSPAYRQPILIAV

Pig                           DVTRDLQEMKEESRQMMREKKVTILELFRSAAYRQPILIAV

Bovine                        DVTRDLQEMKEESRQMMREKKVTILELFRSAAYRQPILIAV

Rabbit                        DVTRDLQEMKEESRQMMREKKVTILELFRSPAYRQPILSAV

Sheep                         DVTRDLQEMKEESRQMMREKKVTILELFRSAAYRQPILIAV

Chicken                       DVSSDLQEMKEESRQMMREKKVTIMELFRSPMYRQPILIAI

Drosophila                    SVEEDIEEMRAEERAQQSESHISTMELICSPTLRPPLIIGI

Baker's yeast                 -----MDLVQLDKREELFQ-----------------IMMKN

Fission yeast                 -----MDLVQEDLRDLVFEER-----------------KAI

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 – 492 Solute carrier family 2, facilitated glucose transporter member 1
Topological domain 207 – 271 Cytoplasmic


Literature citations

Mutational analysis of GLUT1 (SLC2A1) in Glut-1 deficiency syndrome.
Wang D.; Kranz-Eble P.; De Vivo D.C.;
Hum. Mutat. 16:224-231(2000)
Cited for: VARIANTS GLUT1DS1 PHE-66; LEU-126; LYS-146; GLU-256 AND TRP-333;

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.