UniProtKB/Swiss-Prot Q9NZJ5: Variant p.Gln166Arg

• Variant information
• Sequence information
• Literature citations
• All

Variant information

Variant position: 166 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: LB/B 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 Glutamine (Q) to Arginine (R) at position 166 (Q166R, p.Gln166Arg). 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 (Q) to large size and basic (R) 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
Other resources: Links to websites of interest for the variant.

• Variant rs13045 [ dbSNP | Ensembl ]

Sequence information

Variant position: 166 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: 1116 The length of the canonical sequence.
Location on the sequence: EVFGNKMIIPSLDGALFQWD Q DRESMETVPFTVESLLESSY 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.
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	30 – 1116	Eukaryotic translation initiation factor 2-alpha kinase 3
Topological domain	30 – 514	Lumenal
Mutagenesis	164 – 164	W -> A. Decreased tetramerization and activation, leading to decreased ability to phosphorylate EIF2S1/eIF-2-alpha.
Beta strand	166 – 169

Literature citations

Characterization of a mutant pancreatic eIF-2alpha kinase, PEK, and co-localization with somatostatin in islet delta cells.
Shi Y.; An J.; Liang J.; Hayes S.E.; Sandusky G.E.; Stramm L.E.; Yang N.N.;
J. Biol. Chem. 274:5723-5730(1999)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; FUNCTION; CATALYTIC ACTIVITY; TISSUE SPECIFICITY; VARIANTS ARG-166 AND SER-704; Pancreatic eukaryotic initiation factor-2alpha kinase (PEK) homologues in humans, Drosophila melanogaster and Caenorhabditis elegans that mediate translational control in response to endoplasmic reticulum stress.
Sood R.; Porter A.C.; Ma K.; Quilliam L.A.; Wek R.C.;
Biochem. J. 346:281-293(2000)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; FUNCTION; CATALYTIC ACTIVITY; INDUCTION; VARIANTS ARG-166 AND SER-704; The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANTS ARG-166 AND SER-704;