UniProtKB/Swiss-Prot P06870: Variant p.Lys186Glu

• Variant information
• Sequence information
• Literature citations
• All

Variant information

Variant position: 186 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 Lysine (K) to Glutamate (E) at position 186 (K186E, p.Lys186Glu). 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
Polymorphism: Genetic variations in KLK1 are the cause of a decreased in urinary kallikrein activity [MIM:615953]. The His-77 mutation dramatically reduces the activity of the enzyme in the urine. There is a 50 to 60% reduction in urinary kallikrein activity in His-77 individuals, but renal and hormonal adaptation to dietary changes in sodium and potassium are unaffected. However, in studies of brachial artery function, His-77 individuals consistently exhibited an increase in wall shear stress and a paradoxical reduction in artery diameter and lumen compared to Arg-77 individuals. This partial genetic deficiency in kallikrein activity is associated with a form of arterial dysfunction involving inappropriate inward remodeling of the brachial artery despite a chronic increase in shear stress. Additional information on the polymorphism described.
Other resources: Links to websites of interest for the variant.

• Variant rs5517 [ dbSNP | Ensembl ]

Sequence information

Variant position: 186 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: 262 The length of the canonical sequence.
Location on the sequence: FSFPDDLQCVDLKILPNDEC K KAHVQKVTDFMLCVGHLEGG 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	25 – 262	Kallikrein-1
Domain	25 – 259	Peptidase S1
Glycosylation	167 – 167	O-linked (GalNAc...) serine
Disulfide bond	153 – 220
Disulfide bond	185 – 199
Helix	182 – 188

Literature citations

Nucleotide sequence of cloned cDNA for human pancreatic kallikrein.
Fukushima D.; Kitamura N.; Nakanishi S.;
Biochemistry 24:8037-8043(1985)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS GLN-145 AND GLU-186; Kallikrein cDNA from the pancreas of a Chinese patient.
Li T.; Du G.; Dai Y.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS GLN-145 AND GLU-186; Human kidney kallikrein: cDNA cloning and sequence analysis.
Baker A.R.; Shine J.;
DNA 4:445-450(1985)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 18-262 (ISOFORM 1); VARIANTS GLN-145 AND GLU-186;