Home  |  Contact

UniProtKB/Swiss-Prot P49675: Variant p.Met225Thr

Steroidogenic acute regulatory protein, mitochondrial
Gene: STAR
Variant information

Variant position:  225
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  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:  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:  -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:  In AH1.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  225
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  285
The length of the canonical sequence.

Location on the sequence:   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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         DFGNMPEQKGVIRAE---------------HGPTCMVLHPLAGSPSKTKLTWLLSI

Mouse                         HFGEMPEQSGVIRAE---------------HGPTCMVLHPL

Rat                           HFGEMPEQSGVIRAE---------------HGPTCMVLHPL

Pig                           DFGEMPEQKGVIRAE---------------HGPTCMVLHPL

Bovine                        LYEEMPQQKGVIRAE---------------HGPTCMVLRPL

Sheep                         LYEEMPQQKGVIRAE---------------HGPTCMVLRPL

Horse                         QFEEMPEQKGVIRAE---------------HGPTCMVLHPL

Chicken                       THGAMPEQQGFIRAE---------------NGPTCMVLRPL

Xenopus laevis                RFGGMPEQKGFVRGE---------------NGPTCMVLRPL

Zebrafish                     QHPGMPEQKGFVRAE---------------NGPTCIVMRPS

Drosophila                    SPNTYPKEITIHNEDVRINSLHDEETSWFNSRVKCFPLYTI

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.

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.