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UniProtKB/Swiss-Prot Q8WY41: Variant p.Arg276Tyr

Nanos homolog 1
Gene: NANOS1
Variant information

Variant position:  276
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  US
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 Arginine (R) to Tyrosine (Y) at position 276 (R276Y, p.Arg276Tyr).
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 large size and basic (R) to large size and aromatic (Y)
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:  Found in a patient affected by oligo-astheno-teratozoospermia also carrying H-246 on the same allele; requires 2 nucleotide substitutions; unknown pathological significance.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.

Sequence information

Variant position:  276
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  292
The length of the canonical sequence.

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.



Xenopus laevis                GDWAHTMRYCPLRRL-----LRDPQSNSNNPKLRH--

Xenopus tropicalis            GDWAHTMRYCPLRHF-----LRHPHSPRDGQ------

Zebrafish                     GDNAHTIKYCPLSKD-----QPAQRVLKGGRAVGGKR

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.

Chain 1 – 292 Nanos homolog 1
Region 268 – 292 Disordered
Compositional bias 268 – 282 Pro residues
Metal binding 260 – 260 Zinc 2
Metal binding 265 – 265 Zinc 2

Literature citations

Mutations of NANOS1, a human homologue of the Drosophila morphogen, are associated with a lack of germ cells in testes or severe oligo-astheno-teratozoospermia.
Kusz-Zamelczyk K.; Sajek M.; Spik A.; Glazar R.; Jedrzejczak P.; Latos-Bielenska A.; Kotecki M.; Pawelczyk L.; Jaruzelska J.;
J. Med. Genet. 50:187-193(2013)

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.