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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P08123: Variant p.Gly454Cys

Collagen alpha-2(I) chain
Gene: COL1A2
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Variant information Variant position: help 454 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Glycine (G) to Cysteine (C) at position 454 (G454C, p.Gly454Cys). 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: help Change from glycine (G) to medium size and polar (C) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In OI2. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 454 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1366 The length of the canonical sequence.
Location on the sequence: help PNGDAGRPGEPGLMGPRGLP G SPGNIGPAGKEGPVGLPGID 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         PNGDAGRPGEPGLMGPRGLPGSPGNIGPAGKEGPVGLPGID

                              PNGDSGRPGEPGLMGPRGFPGAPGNVGPAGKEGPMGLPGID

Mouse                         PNGDAGRPGEPGLMGPRGLPGSPGNVGPSGKEGPVGLPGID

Rat                           PNGDAGRPGEPGLMGPRGLPGSPGNVGPAGKEGPVGLPGID

Bovine                        PNGDSGRPGEPGLMGPRGFPGSPGNIGPAGKEGPVGLPGID

Chicken                       PNGDAGRPGEPGLMGPRGLPGQPGSPGPAGKEGPVGFPGAD

Sequence annotation in neighborhood: help 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 80 – 1119 Collagen alpha-2(I) chain
Region 28 – 1130 Disordered
Modified residue 441 – 441 4-hydroxyproline
Modified residue 444 – 444 4-hydroxyproline



Literature citations
Mutation and polymorphism spectrum in osteogenesis imperfecta type II: implications for genotype-phenotype relationships.
Bodian D.L.; Chan T.F.; Poon A.; Schwarze U.; Yang K.; Byers P.H.; Kwok P.Y.; Klein T.E.;
Hum. Mol. Genet. 18:463-471(2009)
Cited for: VARIANTS OI2 CYS-234; ARG-283; GLU-397; CYS-454; LEU-457; 461-PRO--GLY-466 DEL; GLU-526; VAL-562; 705-ALA--PRO-707 DEL; ARG-739; VAL-748; ASP-790; PRO-798 INS; 806-PRO--GLY-811 DEL; VAL-856; SER-949; ASP-955; GLU-1027 AND 1058-PRO--ALA-1062 DEL; VARIANT ALA-549; Recurrence of perinatal lethal osteogenesis imperfecta in sibships: parsing the risk between parental mosaicism for dominant mutations and autosomal recessive inheritance.
Pyott S.M.; Pepin M.G.; Schwarze U.; Yang K.; Smith G.; Byers P.H.;
Genet. Med. 13:125-130(2011)
Cited for: VARIANTS OI2 VAL-345 DEL; CYS-454; CYS-562; ASP-715 AND ASP-1087;
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.