Variant information:

(Click the titles to show more information.)

Variant position: 68

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

Type of variant: Polymorphism

The variants are classified into three categories: Disease, Polymorphism and Unclassified.

• Disease: Variants have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
• Polymorphism: No disease-association has been reported.
• Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change: From Proline (P) to Leucine (L) at position 68 (P68L, p.Pro68Leu).

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: Similar physico-chemical property. Both residues are medium size and hydrophobic.

The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score: -3

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: 

Links to websites of interest for the variant.

• GeneReviews
• Wikipedia; GLUT2 entry
• Variant rs7637863 [ dbSNP | Ensembl ]

Sequence information:

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Variant position: 68

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

Protein sequence length: 524

The length of the canonical sequence.

Location on the sequence:  VPLDDRKAINNYVINSTDEL  P TISYSMNPKPTPWAEEETVA

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                         VPLDDRKAINNYVINSTDELPTISYSMNPKPTPWAE-----------EETVA

Mouse                         VPLDDRKAAINYDVNGTDTPLTVTPAY-TTPAPWDE-----

Rat                           VPLDDRRATINYDINGTDTPLIVTPAH-TTPDAW-E-----

Bovine                        VSLDDRIAINNYALNSTEELPTSLGD--PTPVSWAE-----

Chicken                       A-----IPMVRHATNTSRDNATITVTI-PGTEAWGSSEGTL

Baker's yeast                 VRRCGKSSICKVVFHNMQPLDTLYLE---------------

Fission yeast                 LRRSGKSSIQKVVFYKMPPNETLFLE---------------

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.

Type	Positions	Description
Chain	1 – 524	Solute carrier family 2, facilitated glucose transporter member 2
Topological domain	32 – 98	Extracellular
Glycosylation	62 – 62	N-linked (GlcNAc...)

Literature citations

Sequence, tissue distribution, and chromosomal localization of mRNA encoding a human glucose transporter-like protein.
Fukumoto H.; Seino S.; Imura H.; Sieno Y.; Eddy R.L.; Fukushima Y.; Byers M.G.; Shows T.B.; Bell G.I.;
Proc. Natl. Acad. Sci. U.S.A. 85:5434-5438(1988)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT LEU-68;

Sequence variations of the pancreatic islet/liver glucose transporter (GLUT2) gene in Japanese subjects with noninsulin dependent diabetes mellitus.
Matsubara A.; Tanizawa Y.; Matsutani A.; Kaneko T.; Kaku K.;
J. Clin. Endocrinol. Metab. 80:3131-3135(1995)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 29-100; VARIANTS LEU-68 AND ILE-110;