UniProtKB/Swiss-Prot Q9UL51: Variant p.Glu280Lys

Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2
Gene: HCN2
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Variant information Variant position:

280 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 Glutamate (E) to Lysine (K) at position 280 (E280K, p.Glu280Lys). 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 acidic (E) to large size and basic (K) 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:

Does not affect channel activity. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs114790896 [ dbSNP | Ensembl ]

Sequence information Variant position:

280 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

889 The length of the canonical sequence.
Location on the sequence:

VLNFRTGIVIEDNTEIILDP E KIKKKYLRTWFVVDFVSSIP 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                         VLNFRTGIVIEDNTEIILDPEKIKKKYLRTWFVVDFVSSIP

Mouse                         VLNFRTGIVIEDNTEIILDPEKIKKKYLRTWFVVDFVSSIP

Rat                           VLNFRTGIVIEDNTEIILDPEKIKKKYLRTWFVVDFVSSIP

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 – 889	Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2
Topological domain	262 – 288	Cytoplasmic

Literature citations
Gain-of-function HCN2 variants in genetic epilepsy.
Li M.; Maljevic S.; Phillips A.M.; Petrovski S.; Hildebrand M.S.; Burgess R.; Mount T.; Zara F.; Striano P.; Schubert J.; Thiele H.; Nuernberg P.; Wong M.; Weisenberg J.L.; Thio L.L.; Lerche H.; Scheffer I.E.; Berkovic S.F.; Petrou S.; Reid C.A.;
Hum. Mutat. 39:202-209(2018)
Cited for: VARIANTS EIG17 MET-246; TRP-632 AND CYS-756; CHARACTERIZATION OF VARIANTS EIG17 MET-246; TRP-632 AND CYS-756; INVOLVEMENT IN EIG17; CHARACTERIZATION OF VARIANTS LYS-280 AND THR-705;

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.