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UniProtKB/Swiss-Prot P12107: Variant p.Pro1323Leu

Collagen alpha-1(XI) chain
Gene: COL11A1
Chromosomal location: 1p21
Variant information

Variant position:  1323
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Proline (P) to Leucine (L) at position 1323 (P1323L, p.Pro1323Leu).
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 medium size and hydrophobic.
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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

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



Sequence information

Variant position:  1323
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1806
The length of the canonical sequence.

Location on the sequence:   GPKGNPGPVGFPGDPGPPGE  P GPAGQDGVGGDKGEDGDPGQ
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                         GPKGNPGPVGFPGDPGPPGEPGPAGQDGVGGDKGEDGDPGQ

Mouse                         GPKGNPGPVGFPGDPGPPGEPGPAGQDGVGGDKGEDGDPGQ

Rat                           GPKGNPGPVGFPGDPGPPGEPGPAGQDGVGGDKGEDGDPGQ

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 512 – 1563 Collagen alpha-1(XI) chain
Region 529 – 1542 Triple-helical region


Literature citations

Pro-alpha 1(XI) collagen. Structure of the amino-terminal propeptide and expression of the gene in tumor cell lines.
Yoshioka H.; Ramirez F.;
J. Biol. Chem. 265:6423-6426(1990)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM A); VARIANTS LEU-1323 AND PRO-1535;

Splicing mutations of 54-bp exons in the COL11A1 gene cause Marshall syndrome, but other mutations cause overlapping Marshall/Stickler phenotypes.
Annunen S.; Koerkkoe J.; Czarny M.; Warman M.L.; Brunner H.G.; Kaeaeriaeinen H.; Mulliken J.B.; Tranebjaerg L.; Brooks D.G.; Cox G.F.; Cruysberg J.R.; Curtis M.A.; Davenport S.L.H.; Friedrich C.A.; Kaitila I.; Krawczynski M.R.; Latos-Bielenska A.; Mukai S.; Olsen B.R.; Shinno N.; Somer M.; Vikkula M.; Zlotogora J.; Prockop D.J.; Ala-Kokko L.;
Am. J. Hum. Genet. 65:974-983(1999)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; ALTERNATIVE SPLICING (ISOFORMS A; B AND C); VARIANTS STL2/MARSHALL SYNDROME ARG-676; 921-GLN--PRO-926 DEL; 1313-PHE--GLY-1315 DEL; LEU-1323; VAL-1516 AND PRO-1535;

The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4); VARIANTS LEU-1323 AND PRO-1535;

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.