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UniProtKB/Swiss-Prot P63092: Variant p.Arg280Lys

Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Gene: GNAS
Variant information

Variant position:  280
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 Arginine (R) to Lysine (K) at position 280 (R280K, p.Arg280Lys).
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 large size and basic.
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 PHP1A.
Any additional useful information about the variant.



Sequence information

Variant position:  280
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  394
The length of the canonical sequence.

Location on the sequence:   DNQTNRLQEALNLFKSIWNN  R WLRTISVILFLNKQDLLAEK
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                         DNQTNRLQEALNLFKSIWNNRWLRTISVILFLNKQDLLAEK

Mouse                         DNQTNRLQEALNLFKSIWNNRWLRTISVILFLNKQDLLAEK

Rat                           DNQTNRLQEALNLFKSIWNNRWLRTISVILFLNKQDLLAEK

Bovine                        DNQTNRLQEALNLFKSIWNNRWLRTISVILFLNKQDLLAEK

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 2 – 394 Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Domain 39 – 394 G-alpha
Cross 300 – 300 Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)
Mutagenesis 295 – 295 D -> N. Increases binding to GAS2L2; when associated with L-227.
Helix 280 – 282


Literature citations

GNAS1 lesions in pseudohypoparathyroidism Ia and Ic: genotype phenotype relationship and evidence of the maternal transmission of the hormonal resistance.
Linglart A.; Carel J.-C.; Garabedian M.; Le T.; Mallet E.; Kottler M.-L.;
J. Clin. Endocrinol. Metab. 87:189-197(2002)
Cited for: VARIANTS PHP1A ASN-156; MET-159 AND LYS-280;

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.