UniProtKB/SwissProt variant VAR

Variant information

Variant position:

191

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 Histidine (H) at position 191 (L191H, p.Leu191His).

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 hydrophobic (L) to medium size and polar (H)

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 TSC1; reduced expression; reduced inhibition of TORC1 signaling.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs118203403 [ dbSNP | Ensembl ]

Sequence information

Variant position:

191

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

Protein sequence length:

1164

The length of the canonical sequence.

Location on the sequence:

HVAEVYLVHLHASVYALFHR L YGMYPCNFVSFLRSHYSMKE

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                         HV--AEVYLVHLHASVYALFHRLYGMY-PCNFVSFLRSHYSMKE

Mouse                         HV--TEVYLVHLHASVYALFHRLYGMY-PCNFVSFLRSHYS

Rat                           HV--TEVYLVHLHASVYALFHRLYGMY-PCNFVSFLRSHYS

Fission yeast                 DVESQEQRNQTIECLVNVLVH--YGIQRPKELSSCFCHHFL

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 – 1164	Hamartin

Literature citations

Missense mutations to the TSC1 gene cause tuberous sclerosis complex.
Nellist M.; van den Heuvel D.; Schluep D.; Exalto C.; Goedbloed M.; Maat-Kievit A.; van Essen T.; van Spaendonck-Zwarts K.; Jansen F.; Helderman P.; Bartalini G.; Vierimaa O.; Penttinen M.; van den Ende J.; van den Ouweland A.; Halley D.;
Eur. J. Hum. Genet. 17:319-328(2009)
Cited for: VARIANTS TSC1 PRO-117; VAL-128 DEL; PRO-180; HIS-191; 198-ASN-PHE-199 DELINS ILE; ARG-224; LYS-246; ARG-305 AND TRP-305; VARIANTS GLN-509; SER-1035 AND HIS-1097; CHARACTERIZATION OF VARIANTS TSC1 PRO-117; VAL-128 DEL; PRO-180; HIS-191; 198-ASN-PHE-199 DELINS ILE; ARG-224; LYS-246; ARG-305 AND TRP-305; CHARACTERIZATION OF VARIANTS GLN-509; SER-1035 AND HIS-1097;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q92574: Variant p.Leu191His