Home  |  Contact

UniProtKB/Swiss-Prot P12259: Variant p.His1327Arg

Coagulation factor V
Gene: F5
Variant information

Variant position:  1327
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LB/B
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 Histidine (H) to Arginine (R) at position 1327 (H1327R, p.His1327Arg).
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 polar (H) to large size and basic (R)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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

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

Sequence information

Variant position:  1327
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  2224
The length of the canonical sequence.

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.


Mouse                         LGQVPLSSD----------NQKTSSPDLGQVPLFPEDNQNY


Bovine                        LGQTALSPDP---------SQESLSPDLGQTALSPDPSQES

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.

Chain 29 – 2224 Coagulation factor V
Propeptide 738 – 1573 Activation peptide (connecting region)
Repeat 1320 – 1328 2-16
Region 692 – 1573 B
Region 1185 – 1501 35 X 9 AA approximate tandem repeats of [TNP]-L-S-P-D-L-S-Q-T

Literature citations

Detection of new polymorphic markers in the factor V gene: association with factor V levels in plasma.
Lunghi B.; Iacoviello L.; Gemmati D.; Dilasio M.G.; Castoldi E.; Pinotti M.; Castaman G.; Redaelli R.; Mariani G.; Marchetti G.; Bernardi F.;
Thromb. Haemost. 75:45-48(1996)
Cited for: VARIANTS ILE-1285 AND ARG-1327;

Combinations of 4 mutations (FV R506Q, FV H1299R, FV Y1702C, PT 20210G/A) affecting the prothrombinase complex in a thrombophilic family.
Castoldi E.; Simioni P.; Kalafatis M.; Lunghi B.; Tormene D.; Girelli D.; Girolami A.; Bernardi F.;
Blood 96:1443-1448(2000)

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.