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UniProtKB/Swiss-Prot Q16288: Variant p.Leu336Gln

NT-3 growth factor receptor
Gene: NTRK3
Variant information

Variant position:  336
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Unclassified
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 Leucine (L) to Glutamine (Q) at position 336 (L336Q, p.Leu336Gln).
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 (Q)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -2
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 a lung adenocarcinoma sample; somatic mutation.
Any additional useful information about the variant.



Sequence information

Variant position:  336
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  839
The length of the canonical sequence.

Location on the sequence:   RLEHCIEFVVRGNPPPTLHW  L HNGQPLRESKIIHVEYYQEG
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                         RLEHCIEFVVRGNPPPTLHWLHNGQPLRESKIIHVEYYQEG

Chimpanzee                    RLEHCIEFVVRGNPPPTLHWLHNGQPLRESKIIHVEYYQEG

Mouse                         RLEHCIEFVVRGNPTPTLHWLYNGQPLRESKIIHMDYYQEG

Rat                           RLEHCIEFVVRGNPTPTLHWLYNGQPLRESKIIHMDYYQEG

Pig                           RLEHCIEFVVRGNPPPTLHWLHNGQPLRESKITHVEYYQEG

Chicken                       HLEHCIAFAVHGNPAPTLHWLHNGQVLRETEIIHMEFYQQG

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.

TypePositionsDescription
Chain 32 – 839 NT-3 growth factor receptor
Topological domain 32 – 429 Extracellular
Domain 309 – 382 Ig-like C2-type 2
Disulfide bond 320 – 362
Beta strand 332 – 337


Literature citations

Patterns of somatic mutation in human cancer genomes.
Greenman C.; Stephens P.; Smith R.; Dalgliesh G.L.; Hunter C.; Bignell G.; Davies H.; Teague J.; Butler A.; Stevens C.; Edkins S.; O'Meara S.; Vastrik I.; Schmidt E.E.; Avis T.; Barthorpe S.; Bhamra G.; Buck G.; Choudhury B.; Clements J.; Cole J.; Dicks E.; Forbes S.; Gray K.; Halliday K.; Harrison R.; Hills K.; Hinton J.; Jenkinson A.; Jones D.; Menzies A.; Mironenko T.; Perry J.; Raine K.; Richardson D.; Shepherd R.; Small A.; Tofts C.; Varian J.; Webb T.; West S.; Widaa S.; Yates A.; Cahill D.P.; Louis D.N.; Goldstraw P.; Nicholson A.G.; Brasseur F.; Looijenga L.; Weber B.L.; Chiew Y.-E.; DeFazio A.; Greaves M.F.; Green A.R.; Campbell P.; Birney E.; Easton D.F.; Chenevix-Trench G.; Tan M.-H.; Khoo S.K.; Teh B.T.; Yuen S.T.; Leung S.Y.; Wooster R.; Futreal P.A.; Stratton M.R.;
Nature 446:153-158(2007)
Cited for: VARIANTS [LARGE SCALE ANALYSIS] ARG-149; CYS-306; LEU-307; GLN-336; TYR-677; GLN-678; ARG-768 AND LYS-781;

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.