Protein
Staphylococcal superantigen-like 5
Organism
Staphylococcus aureus (strain NCTC 8325)
Function
Secreted protein that plays a role in the inhibition of host innate immune system. Modulates the interaction between host SELPLG and P-selectin thereby preventing initial rolling of neutrophils toward the site of infection (PubMed:17132726). Interferes with leukocyte trafficking by inhibiting host metalloproteinase-9/MMP9 activity (PubMed:20479083, PubMed:29462623, PubMed:29328525). Associates also with two different platelet surface receptors GP1A and GP6 leading to platelet activation and aggregation (PubMed:21552524).
Similarity
Belongs to the staphylococcal/streptococcal toxin family.
Sequence
MKMTAIAKASLALGILATGTITSLHQTVNASEHKAKYENVTKDIFDLRDYYSGASKELKNVTGYRYSKGGKHYLIFDKNRKFTRVQIFGKDIERFKARKNPGLDIFVVKEAENRNGTVFSYGGVTKKNQDAYYDYINAPRFQIKRDEGDGIATYGRVHYIYKEEISLKELDFKLRQYLIQNFDLYKKFPKDSKIKVIMKDGGYYTFELNKKLQTNRMSDVIDGRNIEKIEANIR