UniProtKB/Swiss-Prot P00918: Variant p.Lys18Glu

Carbonic anhydrase 2
Gene: CA2
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Variant information Variant position:

18 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 18 (K18E, p.Lys18Glu). 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 Jogjakarta. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs118203931 [ dbSNP | Ensembl ]

Sequence information Variant position:

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

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

MSHHWGYGKHNGPEHWH K DFPIAKGERQSPVDIDTHTA 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                         MSHHWG-----YGKHNGPEHW---HKDFPIAK-GERQSPVDIDTHTA

Mouse                         MSHHWG-----YSKHNGPENW---HKDFPIAN-GDRQS

Rat                           MSHHWG-----YSKSNGPENW---HKEFPIAN-GDRQS

Bovine                        MSHHWG-----YGKHNGPEHW---HKDFPIAN-GERQS

Rabbit                        MSHHWG-----YGKHNGPEHW---HKDFPIAN-GERQS

Sheep                         MSHHWG-----YGEHNGPEHW---HKDFPIAD-GERQS

Chicken                       MSHHWG-----YDSHNGPAHW---HEHFPIAN-GERQS

Caenorhabditis elegans        MIP-WLLTACIYPCVIGPDFWGLLHGDWRMCTAGQMQS

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
Initiator methionine	1 – 1	Removed
Chain	2 – 260	Carbonic anhydrase 2
Domain	3 – 259	Alpha-carbonic anhydrase
Site	7 – 7	Fine-tunes the proton-transfer properties of H-64
Modified residue	2 – 2	N-acetylserine
Modified residue	2 – 2	Phosphoserine
Mutagenesis	5 – 5	W -> A. Impaired activity, not rescued by 4-methylimidazole (4-MI); when associated with W-64.
Mutagenesis	7 – 7	Y -> F. Enhanced activity.
Mutagenesis	7 – 7	Y -> H. Reduced proton transfer rate.
Helix	16 – 18

Literature citations
Chemical and enzymological characterization of an Indonesian variant of human erythrocyte carbonic anhydrase II, CAII Jogjakarta (17 Lys leads to Glu).
Jones G.L.; Sofro A.S.M.; Shaw D.C.;
Biochem. Genet. 20:979-1000(1982)
Cited for: VARIANT JOGJAKARTA GLU-18;

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.