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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P49675: Variant p.Met225Thr

Steroidogenic acute regulatory protein, mitochondrial
Gene: STAR
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Variant information Variant position: help 225 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 Methionine (M) to Threonine (T) at position 225 (M225T, p.Met225Thr). 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 hydrophobic (M) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -1 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 AH1. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 225 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 285 The length of the canonical sequence.
Location on the sequence: help DFGNMPEQKGVIRAEHGPTC M VLHPLAGSPSKTKLTWLLSI 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                         DFGNMPEQKGV------IRAEH---------GPTCMVLHPLAGSPSKTKLTWLLSI

Mouse                         HFGEMPEQSGV------IRAEH---------GPTCMVLHPL

Rat                           HFGEMPEQSGV------IRAEH---------GPTCMVLHPL

Pig                           DFGEMPEQKGV------IRAEH---------GPTCMVLHPL

Bovine                        LYEEMPQQKGV------IRAEH---------GPTCMVLRPL

Sheep                         LYEEMPQQKGV------IRAEH---------GPTCMVLRPL

Horse                         QFEEMPEQKGV------IRAEH---------GPTCMVLHPL

Chicken                       THGAMPEQQGF------IRAEN---------GPTCMVLRPL

Xenopus laevis                RFGGMPEQKGF------VRGEN---------GPTCMVLRPL

Zebrafish                     QHPGMPEQKGF------VRAEN---------GPTCIVMRPS

Drosophila                    SPNTYPKEITIHNEDVRINSLHDEETSWFNSRVKCFPLYTI
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 64 – 285 Steroidogenic acute regulatory protein, mitochondrial
Domain 67 – 280 START
Beta strand 224 – 230



Literature citations
Analysis of the steroidogenic acute regulatory protein (StAR) gene in Japanese patients with congenital lipoid adrenal hyperplasia.
Nakae J.; Tajima T.; Sugawara T.; Arakane F.; Hanaki K.; Hotsubo T.; Igarashi N.; Igarashi Y.; Ishii T.; Koda N.; Kondo T.; Kohno H.; Nakagawa Y.; Tachibana K.; Takeshima Y.; Tsubouchi K.; Strauss J.F. III; Fujieda K.;
Hum. Mol. Genet. 6:571-576(1997)
Cited for: VARIANTS AH1 VAL-218 AND THR-225;
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.