UniProtKB/SwissProt variant VAR

Variant information

Variant position:

411

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 Threonine (T) to Isoleucine (I) at position 411 (T411I, p.Thr411Ile).

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 polar (T) to medium size and hydrophobic (I)

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 TLR2 are associated with susceptibility to leprosy [MIM:246300]. Leprosy is a chronic disease associated with depressed cellular (but not humoral) immunity, the bacterium requires a lower temperature than 37 degrees Celsius and thrives particularly in peripheral Schwann cells and macrophages. The Trp-677 polymorphism in the intracellular domain of TLR2 has a role in susceptibility to lepromatous leprosy. Wild-type TLR2 mediates CD14-enhanced Mycobacterium leprae-dependent activation of NFKB1, but TLR2 containing the Trp-677 polymorphism did not. The impaired function of the Trp-677 polymorphism provides a molecular mechanism for the poor cellular immune response associated with lepromatous leprosy.

Additional information on the polymorphism described.

Variant description:

Reduces TLR2-mediated NF-kappa-B activation.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs5743699 [ dbSNP | Ensembl ]

Sequence information

Variant position:

411

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

Protein sequence length:

784

The length of the canonical sequence.

Location on the sequence:

TLILRQNHLASLEKTGETLL T LKNLTNIDISKNSFHSMPET

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                         TLILRQNHLASLEKTGETLLTLKNLTNIDISKNSFHSMPET

Gorilla                       TLILRQNHLASLEKTGETLLTLKNLTNVDISKNSFHSMPET

                              TLVLRQNHLASLERTGETLLTLKNLTNIDISKNSFHSMPET

Rhesus macaque                TLILRQNHLASLGKIGETLLTLKNLTNLDISKNTFHYMPET

Chimpanzee                    TLILRQNHLASLEKTGETLLTLKNLTNVDISKNSFHSMPET

Mouse                         TLVLSQNHLRSMQKTGEILLTLKNLTSLDISRNTFHPMPDS

Bovine                        TLVLRQNRLKSLEKTGELLLTLENLNNLDISKNNFLSMPET

Goat                          TLVLRQNRLKSLEKTGELLLTLKNLNNLDISKNNFLSMPET

Sheep                         TLVLRQNRLKSLEKTGELLLTLKNLNNLDISKNNFLSMPET

Horse                         TLILRQNHLTSLGKTGETLLTLKNLTKLDISKNSFHSMPET

Drosophila                    T-----NH-STMESLYNILIIILTYFLPIVSMTVTYSRVGI

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	21 – 784	Toll-like receptor 2
Topological domain	21 – 588	Extracellular
Repeat	389 – 414	LRR 14
Glycosylation	414 – 414	N-linked (GlcNAc...) asparagine
Mutagenesis	416 – 416	T -> A. Prevents addition of N-glycans. Reduces secretion of the N-terminal ectodomain.
Helix	409 – 411

Literature citations

Functional characterization of naturally occurring genetic variants in the human TLR1-2-6 gene family.
Ben-Ali M.; Corre B.; Manry J.; Barreiro L.B.; Quach H.; Boniotto M.; Pellegrini S.; Quintana-Murci L.;
Hum. Mutat. 32:643-652(2011)
Cited for: VARIANTS ASP-89; ILE-411; HIS-571; HIS-631; ARG-636 AND GLN-753; CHARACTERIZATION OF VARIANTS ILE-411; HIS-631 AND GLN-753;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot O60603: Variant p.Thr411Ile