UniProtKB/Swiss-Prot P08572: Variant p.Gly683Ala

Collagen alpha-2(IV) chain
Gene: COL4A2
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Variant information Variant position:

683 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

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:

From Glycine (G) to Alanine (A) at position 683 (G683A, p.Gly683Ala). 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:

Change from glycine (G) to small size and hydrophobic (A) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

0 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.

Variant rs3803230 [ dbSNP | Ensembl ]

Sequence information Variant position:

683 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

1712 The length of the canonical sequence.
Location on the sequence:

TDVKRAVGGDRQEAIQPGCI G GPKGLPGLPGPPGPTGAKGL 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                         TDVKRAVGGDRQEAIQ--PGCIGGPK-GLPGLPGPPGPTGAKGL

Mouse                         TGVKRPIGGGQQVVVQ--PGCIEGPT-GSPGQPGPPGPTGA

Caenorhabditis elegans        AGLPGLSGKPGQDGLPGLPGNKGEAGYGQPGQPGFPGAKGD

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.

Type	Positions	Description
Chain	184 – 1712	Collagen alpha-2(IV) chain
Region	184 – 1484	Triple-helical region

Literature citations
Human basement membrane collagen (type IV). The amino acid sequence of the alpha 2(IV) chain and its comparison with the alpha 1(IV) chain reveals deletions in the alpha 1(IV) chain.
Brazel D.; Pollner R.; Oberbaeumer I.; Kuehn K.;
Eur. J. Biochem. 172:35-42(1988)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1-1042; VARIANTS LYS-517 AND ALA-683; Sequence variants in COL4A1 and COL4A2 genes in Ecuadorian families with keratoconus.
Karolak J.A.; Kulinska K.; Nowak D.M.; Pitarque J.A.; Molinari A.; Rydzanicz M.; Bejjani B.A.; Gajecka M.;
Mol. Vis. 17:827-843(2011)
Cited for: VARIANTS PHE-192; LYS-517; ALA-683; ARG-701 AND SER-718; COL4A2 mutations impair COL4A1 and COL4A2 secretion and cause hemorrhagic stroke.
Jeanne M.; Labelle-Dumais C.; Jorgensen J.; Kauffman W.B.; Mancini G.M.; Favor J.; Valant V.; Greenberg S.M.; Rosand J.; Gould D.B.;
Am. J. Hum. Genet. 90:91-101(2012)
Cited for: INVOLVEMENT IN SUSCEPTIBILITY TO ICH; VARIANTS PHE-192; LYS-517; ALA-683; ARG-701; SER-718; GLN-1109; GLY-1123; LYS-1150; ILE-1399 AND THR-1690; CHARACTERIZATION OF VARIANTS GLY-1123; LYS-1150 AND THR-1690;

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.