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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q03692: Variant p.Gly618Val

Collagen alpha-1(X) chain
Gene: COL10A1
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Variant information Variant position: help 618 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 Valine (V) at position 618 (G618V, p.Gly618Val). 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 hydrophobic (V) 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 SMCD. Any additional useful information about the variant.


Sequence information Variant position: help 618 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 680 The length of the canonical sequence.
Location on the sequence: help YFSYHVHVKGTHVWVGLYKN G TPVMYTYDEYTKGYLDQASG 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                         YFSYHVHVKGTHVWVGLYKNGTPVMYTYDEYTKGYLDQASG

Mouse                         YFSYHVHVKGTHVWVGLYKNGTPTMYTYDEYSKGYLDQASG

Bovine                        YFSYHIHVKGTHAWVGLYKNGTPVMYTYDEYIKGYLDQASG

Chicken                       YFSYHVHAKGTNVWVALYKNGSPVMYTYDEYQKGYLDQASG
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 19 – 680 Collagen alpha-1(X) chain
Domain 547 – 680 C1q
Region 520 – 680 Nonhelical region (NC1)
Binding site 626 – 626
Binding site 627 – 627
Binding site 633 – 633
Binding site 634 – 634
Binding site 634 – 634



Literature citations
Type X collagen multimer assembly in vitro is prevented by a Gly618 to Val mutation in the alpha 1(X) NC1 domain resulting in Schmid metaphyseal chondrodysplasia.
Chan D.; Cole W.G.; Rogers J.G.; Bateman J.F.;
J. Biol. Chem. 270:4558-4562(1995)
Cited for: VARIANT SMCD VAL-618; Mutations of COL10A1 in Schmid metaphyseal chondrodysplasia.
Bateman J.F.; Wilson R.; Freddi S.; Lamande S.R.; Savarirayan R.;
Hum. Mutat. 25:525-534(2005)
Cited for: VARIANTS SMCD ARG-18; GLU-18; ASP-582; ARG-591; ARG-595; GLU-595; HIS-597; CYS-597; ASP-598; PRO-600; PRO-614; LYS-617; VAL-618; ARG-644; GLY-648; ARG-651; PRO-653 AND PRO-671; VARIANTS THR-27; HIS-198; ARG-545 AND MET-603;
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.