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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9BRK5: Variant p.Ala148Thr

45 kDa calcium-binding protein
Gene: SDF4
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Variant information Variant position: help 148 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 Alanine (A) to Threonine (T) at position 148 (A148T, p.Ala148Thr). 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 polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 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

Variant description: help In a colorectal cancer sample; somatic mutation. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 148 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 362 The length of the canonical sequence.
Location on the sequence: help MEKTAEHFQEAMEESKTHFR A VDPDGDGHVSWDEYKVKFLA 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                         MEKTAEHFQEAMEESKTHFRAVDPDGDGHVSWDEYKVKFLA

Mouse                         MEKTAEHFQEAVKENKLHFRAVDPDGDGHVSWDEYKVKFLA

Rat                           MEKTAEHFQEAVKENKLHFRAVDPDGDGHVSWDEYKVKFLA

Bovine                        MQKTAEHFQEAVAESRAHFRAVDPDGDGHVSWDEYKVKFLA

Goat                          MQKTAEHFQEAVAESRAHFRAVDPDGDGHVSWDEYKVKFLA

Chicken                       MEKTDEHFQEAVEENKMHFRAVDPDGDGHVSWDEYKIKFLA

Xenopus laevis                MEKTEEHFQEAVNENKLHFRAVDPDGDGHVSWDEYKIKFLA

Xenopus tropicalis            MEKTEEHFQEAVNENKLHFRAVDPDGDGHVSWDEYKIKFLA

Zebrafish                     MEKTEEHFQEAVRENKLSFRAVDPDGDGLVTWDEYRVKFLA

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 37 – 362 45 kDa calcium-binding protein
Domain 137 – 172 EF-hand 2
Binding site 150 – 150
Binding site 152 – 152
Binding site 154 – 154
Binding site 156 – 156
Binding site 161 – 161
Alternative sequence 1 – 232 Missing. In isoform 5.



Literature citations
The consensus coding sequences of human breast and colorectal cancers.
Sjoeblom T.; Jones S.; Wood L.D.; Parsons D.W.; Lin J.; Barber T.D.; Mandelker D.; Leary R.J.; Ptak J.; Silliman N.; Szabo S.; Buckhaults P.; Farrell C.; Meeh P.; Markowitz S.D.; Willis J.; Dawson D.; Willson J.K.V.; Gazdar A.F.; Hartigan J.; Wu L.; Liu C.; Parmigiani G.; Park B.H.; Bachman K.E.; Papadopoulos N.; Vogelstein B.; Kinzler K.W.; Velculescu V.E.;
Science 314:268-274(2006)
Cited for: VARIANT [LARGE SCALE ANALYSIS] THR-148;
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.