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UniProtKB/Swiss-Prot Q92743: Variant p.Val297Met

Serine protease HTRA1
Gene: HTRA1
Variant information

Variant position:  297
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 Valine (V) to Methionine (M) at position 297 (V297M, p.Val297Met).
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:  Similar physico-chemical property. Both residues are medium size and hydrophobic.
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 CARASIL; has 21 to 50% normal protease activity; is unable to suppress TGF-beta activity.
Any additional useful information about the variant.

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



Sequence information

Variant position:  297
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  480
The length of the canonical sequence.

Location on the sequence:   EFVVAIGSPFSLQNTVTTGI  V STTQRGGKELGLRNSDMDYI
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                         EFVVAIGSPFSLQNTVTTGIVSTTQRGGKELGLRNSDMDYI

Mouse                         EFVVAIGSPFSLQNTVTTGIVSTTQRGGKELGLRNSDMDYI

Rat                           EFVVAIGSPFSLQNTVTTGIVSTTQRGGKELGLRNSDMDYI

Bovine                        EFVVAIGSPFSLQNTVTTGIVSTTQRGGKELGLRNSDMDYI

Xenopus laevis                EFVVAIGSPFSLQNTVTTGIVSTAQRGGKELGLRNSDMDYI

Xenopus tropicalis            EFVVAIGSPFSLQNTVTTGIVSTAQRGGKELGLRNSDMDYI

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 23 – 480 Serine protease HTRA1
Region 204 – 364 Serine protease
Site 278 – 278 Involved in trimer stabilization
Beta strand 289 – 299


Literature citations

Association of HTRA1 mutations and familial ischemic cerebral small-vessel disease.
Hara K.; Shiga A.; Fukutake T.; Nozaki H.; Miyashita A.; Yokoseki A.; Kawata H.; Koyama A.; Arima K.; Takahashi T.; Ikeda M.; Shiota H.; Tamura M.; Shimoe Y.; Hirayama M.; Arisato T.; Yanagawa S.; Tanaka A.; Nakano I.; Ikeda S.; Yoshida Y.; Yamamoto T.; Ikeuchi T.; Kuwano R.; Nishizawa M.; Tsuji S.; Onodera O.;
N. Engl. J. Med. 360:1729-1739(2009)
Cited for: VARIANTS CARASIL THR-252 AND MET-297; CHARACTERIZATION OF VARIANTS CARASIL THR-252 AND MET-297;

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.