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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P38398: Variant p.Arg1443Gly

Breast cancer type 1 susceptibility protein
Gene: BRCA1
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Variant information Variant position: help 1443 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help US 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 Arginine (R) to Glycine (G) at position 1443 (R1443G, p.Arg1443Gly). 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 large size and basic (R) to glycine (G) 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 BC; uncertain significance; functionally neutral in vitro. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 1443 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1863 The length of the canonical sequence.
Location on the sequence: help SQPSNSYPSIISDSSALEDL R NPEQSTSEKAVLTSQKSSEY 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                         SQPSNSYPSIISDSSALEDLRNPEQSTSEKAVLTSQKSSEY

Gorilla                       SQPSNSYPSIISDSSALEDLRNPEQSTSEKAVLTSQKSSEY

                              SQPSNSSPSLIADSCSPEDLLNPEQNASER-VLTSEKSSDS

Rhesus macaque                SQPSNSYPSIITDSSALEDLRNPEQSTSEKAVLTSQKSSEY

Chimpanzee                    SQPSNSYPSIISDSSALEDLQNPEQSTSEKAVLTSQKSSEY

Mouse                         NQPSGHSPSLLADPCALEDLPDLEPNMSGAAILTSKNINEN

Rat                           SQPSGHPPCLPADPCALEDLPDPEQNRSGTAILTSKNINEN

Bovine                        SQPSHSSASLTADSRGPEHLLNLEQDTSERAILTSEKSRDY

Caenorhabditis elegans        ----------LANVTCATSSTTLDADRTPKAIQDDEDRIDD

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 1 – 1863 Breast cancer type 1 susceptibility protein
Region 1440 – 1505 Disordered
Compositional bias 1440 – 1468 Polar residues
Modified residue 1423 – 1423 Phosphoserine; by ATM and ATR
Modified residue 1457 – 1457 Phosphoserine; by ATR; in vitro
Alternative sequence 64 – 1863 Missing. In isoform 2.
Alternative sequence 1453 – 1453 Missing. In isoform 3 and isoform 6.
Alternative sequence 1453 – 1453 A -> DSHIHGQRNNSMFSKRPREHIS. In isoform 7.
Mutagenesis 1423 – 1423 S -> A. Inhibition of the infrared-induced G2 arrest. Reduces phosphorylation by ATR.
Mutagenesis 1457 – 1457 S -> A. Reduces in vitro phosphorylation by ATR.



Literature citations
Mutations in the BRCA1 gene in families with early-onset breast and ovarian cancer.
Castilla L.H.; Couch F.J.; Erdos M.R.; Hoskins K.F.; Calzone K.; Garber J.E.; Boyd J.; Lubin M.B.; Deshano M.L.; Brody L.C.; Collins F.S.; Weber B.L.;
Nat. Genet. 8:387-391(1994)
Cited for: VARIANT BC GLY-64; VARIANTS ALA-772; ASN-1040 AND GLY-1443; Constant denaturant gel electrophoresis (CDGE) in BRCA1 mutation screening.
Andersen T.I.; Eiken H.G.; Couch F.; Kaada G.; Skrede M.; Johnsen H.; Aloysius T.A.; Tveit K.M.; Tranebjaerg L.; Doerum A.; Moeller P.; Weber B.L.; Boerresen-Dale A.-L.;
Hum. Mutat. 11:166-174(1998)
Cited for: VARIANT BC GLY-64; VARIANTS ALA-772; GLU-820; ASN-1040; GLY-1443; ILE-1512; LEU-1637 AND ILE-1652; A high-throughput functional complementation assay for classification of BRCA1 missense variants.
Bouwman P.; van der Gulden H.; van der Heijden I.; Drost R.; Klijn C.N.; Prasetyanti P.; Pieterse M.; Wientjens E.; Seibler J.; Hogervorst F.B.; Jonkers J.;
Cancer Discov. 3:1142-1155(2013)
Cited for: CHARACTERIZATION OF VARIANTS BC PHE-4; THR-18; GLN-45; GLY-61; GLY-64; TYR-67; LYS-132; HIS-142; PHE-147; PRO-165; TRP-170; TYR-186; ILE-191; MET-231; VAL-245; VAL-246; LEU-271; PHE-668; ASN-695; LEU-798; TYR-810; LYS-826; GLN-841; HIS-856; ASN-1101; ASN-1140; GLY-1140; LYS-1214; LYS-1236; SER-1267; VAL-1282; SER-1297 DEL; ARG-1301; LYS-1346; ILE-1378; VAL-1400; PRO-1407; THR-1411; GLY-1443; GLY-1448; CYS-1486; MET-1534; PRO-1589; THR-1628; PRO-1651; PHE-1651; PHE-1655; ARG-1686; GLN-1686; VAL-1688 DEL; ILE-1691; TRP-1699; GLN-1699; GLU-1706; ALA-1706; GLU-1708; CYS-1718; ALA-1720; LYS-1735; ALA-1736; GLY-1739; VAL-1739; GLN-1746; THR-1753; PRO-1764; SER-1767; VAL-1770; CYS-1782; THR-1789; ASP-1794; ASP-1804; ARG-1812; ARG-1837 AND LEU-1862; VARIANTS CYS-105; CYS-866; ALA-1060; LYS-1250 AND ILE-1652;
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.