9q5e

Structural highlights

Function

HSA_STRGC A cell wall protein involved with PadA in host cell interactions required for colonization and pathogensis (Probable) (PubMed:19884334, PubMed:27616700). Mediates hemagglutination and adherence to ghst glycoproteins (PubMed:11854202). Recognizes fetuin-A (AHSG), a highly glycosylated human plasma protein, also involved in recognition of human platelets, probably via platelet glycoprotein Ib alpha (GP1BA) (PubMed:19884334). Acts in concert with PadA to promote binding to glycosylated human fibronectin (FN1) and vitronectin (VTN), and biofilm formation. Plays a major role in fibronectin and vitronectin binding; binding is mediated by glycosylated regions. Probably mediates interaction of PadA with resting platelets (PubMed:27616700).^{[1] [2] [3] [4]}

References

1. ↑ Takahashi Y, Konishi K, Cisar JO, Yoshikawa M. Identification and characterization of hsa, the gene encoding the sialic acid-binding adhesin of Streptococcus gordonii DL1. Infect Immun. 2002 Mar;70(3):1209-18. PMID:11854202 doi:10.1128/IAI.70.3.1209-1218.2002
2. ↑ Petersen HJ, Keane C, Jenkinson HF, Vickerman MM, Jesionowski A, Waterhouse JC, Cox D, Kerrigan SW. Human platelets recognize a novel surface protein, PadA, on Streptococcus gordonii through a unique interaction involving fibrinogen receptor GPIIbIIIa. Infect Immun. 2010 Jan;78(1):413-22. PMID:19884334 doi:10.1128/IAI.00664-09
3. ↑ Haworth JA, Jenkinson HF, Petersen HJ, Back CR, Brittan JL, Kerrigan SW, Nobbs AH. Concerted functions of Streptococcus gordonii surface proteins PadA and Hsa mediate activation of human platelets and interactions with extracellular matrix. Cell Microbiol. 2017 Jan;19(1):e12667. PMID:27616700 doi:10.1111/cmi.12667
4. ↑ Takahashi Y, Konishi K, Cisar JO, Yoshikawa M. Identification and characterization of hsa, the gene encoding the sialic acid-binding adhesin of Streptococcus gordonii DL1. Infect Immun. 2002 Mar;70(3):1209-18. PMID:11854202 doi:10.1128/IAI.70.3.1209-1218.2002