Histatin 5 TFA 抑制宿主基质金属蛋白酶 MMP-2 和 MMP-9 活性，IC₅₀s 分别为 0.57 和 0.25 μM。

Histatin 5 TFA inhibits the activity of the host matrix metalloproteinases MMP-2 and MMP-9 with IC 50 s of 0.57 and 0.25 μM, respectively.

Solid

IC50: 0.57 μM (MMP-2), 0.25 μM (MMP-9)

Histatin 5 is a member of a family of low-molecular-weight salivary proteins secreted by parotid, submandibular, and sublingual glands. Using biotinylated gelatin as a substrate, Histatin 5 is found to inhibit the activity of the host matrix metalloproteinases MMP-2 and MMP-9 with IC50s of 0.57 and 0.25 μM, respectively. To localize the domain responsible for this inhibition, three peptides containing different regions of Histatin 5 are synthesized and tested as inhibitors of MMP-9. Peptides comprising residues 1 to 14 and residues 4 to 15 of Histatin 5 show much lower inhibitory activities (IC50s, 21.4 and 20.5 μM, respectively), while a peptide comprising residues 9 to 22 showed identical activity to Histatin 5 against MMP-9. Kinetic analysis of the inhibition of the Arg-gingipain reveals that Histatin 5 is a competitive inhibitor, affecting only the Km

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisturePowder -80°C 2 years；-20°C 1 year

DSHAKRHHGYKRKFHEKHHSHRGY

Asp-Ser-His-Ala-Lys-Arg-His-His-Gly-Tyr-Lys-Arg-Lys-Phe-His-Glu-Lys-His-His-Ser-His-Arg-Gly-Tyr

[1]. Gusman H, et al. Salivary histatin 5 is an inhibitor of both host and bacterial enzymes implicated in periodontaldisease. Infect Immun. 2001 Mar;69(3):1402-8.
[2]. Helmerhorst EJ, et al. The human salivary peptide histatin 5 exerts its antifungal activity through the formation ofreactive oxygen species. Proc Natl Acad Sci U S A. 2001 Dec 4;98(25):14637-42.

In Vitro: H₂O : 100 mg/mL (31.74 mM; Need ultrasonic)配制储备液