Home  |  Contact

UniProtKB/Swiss-Prot P51124: Variant p.Arg221Gly

Granzyme M
Gene: GZMM
Variant information

Variant position:  221
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Arginine (R) to Glycine (G) at position 221 (R221G, p.Arg221Gly).
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 large size and basic (R) to glycine (G)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -2
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:  221
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  257
The length of the canonical sequence.

Location on the sequence:   APCKGDSGGPLVCGKGRVLA  R VLSFSSRVCTDIFKPPVATA
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.

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 26 – 257 Granzyme M
Domain 26 – 254 Peptidase S1
Active site 207 – 207 Charge relay system
Disulfide bond 203 – 230
Beta strand 218 – 223


Literature citations

Met-ase: cloning and distinct chromosomal location of a serine protease preferentially expressed in human natural killer cells.
Smyth M.J.; Sayers T.J.; Wiltrout T.; Powers J.C.; Trapani J.A.;
J. Immunol. 151:6195-6205(1993)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT GLY-221;

The human Met-ase gene (GZMM): structure, sequence, and close physical linkage to the serine protease gene cluster on 19p13.3.
Pilat D.; Fink T.M.; Obermaier-Skrobanek B.; Zimmer M.; Wekerle H.; Lichter P.; Jenne D.E.;
Genomics 24:445-450(1994)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANT GLY-221;

The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANT GLY-221;

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.