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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P12111: Variant p.Ala3012Pro

Collagen alpha-3(VI) chain
Gene: COL6A3
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Variant information Variant position: help 3012 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B 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 Alanine (A) to Proline (P) at position 3012 (A3012P, p.Ala3012Pro). 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 small size and hydrophobic (A) to medium size and hydrophobic (P) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -1 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

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


Sequence information Variant position: help 3012 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 3177 The length of the canonical sequence.
Location on the sequence: help SREVQVFEITENSAKLHWER A EPPGPYFYDLTVTSAHDQSL 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                         SREVQVFEITENSAKLHWERAEPPGPYFYDLTVTSAHDQSL

Chicken                       N-DIQITDVTENSARLRWASPEPHNAYVFDLAITLAHDHSL

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 26 – 3177 Collagen alpha-3(VI) chain
Domain 2991 – 3085 Fibronectin type-III
Region 2376 – 3177 Nonhelical region
Alternative sequence 1444 – 3177 Missing. In isoform 3 and isoform 5.



Literature citations
Mosaic structure of globular domains in the human type VI collagen alpha 3 chain: similarity to von Willebrand factor, fibronectin, actin, salivary proteins and aprotinin type protease inhibitors.
Chu M.-L.; Zhang R.-Z.; Pan T.-C.; Stokes D.; Conway D.; Kuo H.-J.; Glanville R.; Mayer U.; Mann K.; Deutzmann R.; Timpl R.;
EMBO J. 9:385-393(1990)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; PARTIAL PROTEIN SEQUENCE; HYDROXYLATION AT PRO-2100; LYS-2103; PRO-2206; LYS-2209; LYS-2212; PRO-2239; PRO-2316; PRO-2319; LYS-2322 AND LYS-2337; VARIANTS VAL-2431; THR-2927; VAL-2988 AND PRO-3012;
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.