UniProtKB/SwissProt variant VAR

Variant information

Variant position:

1228

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 implicated in disease according to literature reports.
Polymorphism: Variants not reported to be implicated in disease.
Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:

From Proline (P) to Leucine (L) at position 1228 (P1228L, p.Pro1228Leu).

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

Variant description:

No effect on activity; increases secretion; rate of solubilization is 2.5-fold higher than wild-type.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs121912703 [ dbSNP | Ensembl ]

Sequence information

Variant position:

1228

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

Protein sequence length:

1306

The length of the canonical sequence.

Location on the sequence:

LRTENELHGEKLGWPQYNWT P NSARSEGPLPDSGRVSFLGL

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                         LRTENELHGEKLGWPQYNWTPNSARSEGPLPDSGRVSFLGL

Chimpanzee                    LRTENELHGEKLGWPQYNWTPNSARSEGPLPDSGRVSFLGL

Mouse                         LVTENRRHGETLGWPEYNWAPNTARAEGSTAESNRVNFLGL

Rat                           LVTENRRHGETLGWPEYTWTPNTARAEGSLPESSRVNFLGM

Rabbit                        LLTENGRHGEKLGWPQYTWTPNSARSEGSLPDSGRVNFLGM

Drosophila                    LEAENIKNNVHIGWTTSNKCVSS------------------

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 – 1306	Angiotensin-converting enzyme
Chain	30 – 1232	Angiotensin-converting enzyme, soluble form
Topological domain	30 – 1256	Extracellular
Region	631 – 1232	Peptidase M2 2
Site	1225 – 1225	Not glycosylated
Alternative sequence	1146 – 1306	Missing. In isoform Somatic-2.

Literature citations

Increased shedding of angiotensin-converting enzyme by a mutation identified in the stalk region.
Eyries M.; Michaud A.; Deinum J.; Agrapart M.; Chomilier J.; Kramers C.; Soubrier F.;
J. Biol. Chem. 276:5525-5532(2001)
Cited for: BIOPHYSICOCHEMICAL PROPERTIES; CHARACTERIZATION OF VARIANT LEU-1228;

Point mutation in the stalk of angiotensin-converting enzyme causes a dramatic increase in serum angiotensin-converting enzyme but no cardiovascular disease.
Kramers C.; Danilov S.M.; Deinum J.; Balyasnikova I.V.; Scharenborg N.; Looman M.; Boomsma F.; de Keijzer M.H.; van Duijn C.; Martin S.; Soubrier F.; Adema G.J.;
Circulation 104:1236-1240(2001)
Cited for: VARIANT LEU-1228; ASSOCIATION WITH BENIGN SERUM INCREASE OF ANGIOTENSIN-CONVERTING ENZYME;

Hereditary elevation of angiotensin converting enzyme suggesting neurosarcoidosis.
Linnebank M.; Kesper K.; Jeub M.; Urbach H.; Wuellner U.; Klockgether T.; Schmidt S.;
Neurology 61:1819-1820(2003)
Cited for: VARIANT LEU-1228; ASSOCIATION WITH BENIGN SERUM INCREASE OF ANGIOTENSIN-CONVERTING ENZYME;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P12821: Variant p.Pro1228Leu