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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q8IX30: Variant p.Cys97Trp

Signal peptide, CUB and EGF-like domain-containing protein 3
Gene: SCUBE3
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Variant information Variant position: help 97 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 Cysteine (C) to Tryptophan (W) at position 97 (C97W, p.Cys97Trp). 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 medium size and polar (C) to large size and aromatic (W) 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 SSFSC2; decreased homodimerization; does not affect heterodimerization with SCUBE1 or SCUBE2; does not affect localization to the cell surface. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 97 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 993 The length of the canonical sequence.
Location on the sequence: help EDNAGCVHDCVNIPGNYRCT C YDGFHLAHDGHNCLDVDECA 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                         EDNAGCVHDCVNIPGNYRCTCYDGFHLAHDGHNCLDVDECA

Mouse                         EDNAGCVHDCVNIPGNYRCTCYDGFHLAHDGHNCLDVDECA
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 21 – 993 Signal peptide, CUB and EGF-like domain-containing protein 3
Domain 70 – 111 EGF-like 2; calcium-binding
Disulfide bond 97 – 110



Literature citations
SCUBE3 loss-of-function causes a recognizable recessive developmental disorder due to defective bone morphogenetic protein signaling.
Lin Y.C.; Niceta M.; Muto V.; Vona B.; Pagnamenta A.T.; Maroofian R.; Beetz C.; van Duyvenvoorde H.; Dentici M.L.; Lauffer P.; Vallian S.; Ciolfi A.; Pizzi S.; Bauer P.; Gruening N.M.; Bellacchio E.; Del Fattore A.; Petrini S.; Shaheen R.; Tiosano D.; Halloun R.; Pode-Shakked B.; Albayrak H.M.; Isik E.; Wit J.M.; Dittrich M.; Freire B.L.; Bertola D.R.; Jorge A.A.L.; Barel O.; Sabir A.H.; Al Tenaiji A.M.J.; Taji S.M.; Al-Sannaa N.; Al-Abdulwahed H.; Digilio M.C.; Irving M.; Anikster Y.; Bhavani G.S.L.; Girisha K.M.; Haaf T.; Taylor J.C.; Dallapiccola B.; Alkuraya F.S.; Yang R.B.; Tartaglia M.;
Am. J. Hum. Genet. 108:115-133(2021)
Cited for: FUNCTION; SUBCELLULAR LOCATION; INTERACTION WITH SCUBE1 AND SCUBE2; INTERACTION WITH BMP2; BMP4; BMP7; BMPR1A; BMPR1B AND BMPR2; INVOLVEMENT IN SSFSC2; VARIANTS SSFSC2 TRP-97; ASP-204; 573-ARG--LYS-993 DEL; THR-815 AND 929-ARG--LYS-993 DEL; CHARACTERIZATION OF VARIANTS SSFSC2 TRP-97; 573-ARG--LYS-993 DEL AND THR-815;
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.