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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q02388: Variant p.Gly2070Arg

Collagen alpha-1(VII) chain
Gene: COL7A1
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Variant information Variant position: help 2070 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 Arginine (R) at position 2070 (G2070R, p.Gly2070Arg). 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 large size and basic (R) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In DDEB. Any additional useful information about the variant.


Sequence information Variant position: help 2070 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 2944 The length of the canonical sequence.
Location on the sequence: help GVGEAGRPGERGERGEKGER G EQGRDGPPGLPGTPGPPGPP 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                         GVGEAGRPGERGERGEKGERGEQGRDGPPGLPGTPGPPGPP

Mouse                         GSGEAGRPGERGERGEKGERGDQGRD---GLPGLPGPPGPP
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 17 – 2944 Collagen alpha-1(VII) chain
Region 1254 – 2784 Triple-helical region
Region 1963 – 2782 Disordered
Compositional bias 2056 – 2073 Basic and acidic residues
Modified residue 2084 – 2084 4-hydroxyproline
Modified residue 2087 – 2087 4-hydroxyproline
Modified residue 2090 – 2090 4-hydroxyproline



Literature citations
Analysis of the COL7A1 gene in Czech patients with dystrophic epidermolysis bullosa reveals novel and recurrent mutations.
Jerabkova B.; Kopeckova L.; Buckova H.; Vesely K.; Valickova J.; Fajkusova L.;
J. Dermatol. Sci. 59:136-140(2010)
Cited for: VARIANTS RDEB ARG-1845; ARG-1981; GLU-2049; TRP-2063; CYS-2069; GLU-2296; ARG-2557 AND TRP-2622; VARIANTS DDEB ARG-2003; ASP-2040; ARG-2043; ARG-2064; ARG-2070 AND ASP-2076;
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.