UniProtKB/SwissProt variant VAR

Variant information

Variant position:

221

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

Type of variant:

LP/P [Disclaimer]

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 Leucine (L) to Proline (P) at position 221 (L221P, p.Leu221Pro).

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:

In MRXSRC; marked reduction in outwardly-rectifying currents; does not affect its localization in endoplasmic reticulum membrane.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs879255581 [ dbSNP | Ensembl ]

Sequence information

Variant position:

221

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

Protein sequence length:

760

The length of the canonical sequence.

Location on the sequence:

KWTLLIKTVTLVLVVSSGLS L GKEGPLVHVACCCGNFFSSL

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                         KWTLLIKTVTLVLVVSSGLSLGKEGPLVHVACCCGNFFSSL

Mouse                         KWTLLIKTVTLVLVVSSGLSLGKEGPLVHVACCCGNFFSSL

Rat                           KWTLLIKTVTLVLVVSSGLSLGKEGPLVHVACCCGNFFSSL

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 – 760	H(+)/Cl(-) exchange transporter 4
Site	224 – 224	Mediates proton transfer from the outer aqueous phase to the interior of the protein; involved in linking H(+) and Cl(-) transport
Mutagenesis	224 – 224	E -> A. Restores chloride translocation, but not proton transport; when associated with A-281.

Literature citations

De novo and inherited mutations in the X-linked gene CLCN4 are associated with syndromic intellectual disability and behavior and seizure disorders in males and females.
Palmer E.E.; Stuhlmann T.; Weinert S.; Haan E.; Van Esch H.; Holvoet M.; Boyle J.; Leffler M.; Raynaud M.; Moraine C.; van Bokhoven H.; Kleefstra T.; Kahrizi K.; Najmabadi H.; Ropers H.H.; Delgado M.R.; Sirsi D.; Golla S.; Sommer A.; Pietryga M.P.; Chung W.K.; Wynn J.; Rohena L.; Bernardo E.; Hamlin D.; Faux B.M.; Grange D.K.; Manwaring L.; Tolmie J.; Joss S.; Cobben J.M.; Duijkers F.A.M.; Goehringer J.M.; Challman T.D.; Hennig F.; Fischer U.; Grimme A.; Suckow V.; Musante L.; Nicholl J.; Shaw M.; Lodh S.P.; Niu Z.; Rosenfeld J.A.; Stankiewicz P.; Jentsch T.J.; Gecz J.; Field M.; Kalscheuer V.M.;
Mol. Psychiatry 23:222-230(2018)
Cited for: VARIANTS MRXSRC ASN-15; SER-78; GLY-212; PRO-221; VAL-221; MET-275; LEU-534; MET-536; ARG-544; VAL-555; TRP-718 AND ARG-731; CHARACTERIZATION OF VARIANTS MRXSRC ASN-15; GLY-212; PRO-221; MET-275; LEU-534; VAL-555 AND TRP-718; FUNCTION; SUBCELLULAR LOCATION;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P51793: Variant p.Leu221Pro