Name: Human SFTPD/SP-D Recombinant Protein (Glu22Gly, His Tag)
Synonyms: Pulmonary Surfactant-Associated Protein D;PSP-D;SP-D;Collectin-7;Lung Surfactant Protein D;SFTPD;COLEC7;PSPD;SFTP4;COLEC7;SFTP4
Expression host: HEK293 Cells
Sequence: Ala21-Phe375
Accesstion: AAH22318.1
Species: Human
Mol_Mass: 36.5 kDa
AP_Mol_Mass: 45 kDa
Tag: C-His
Purity: > 95 % as determined by reducing SDS-PAGE.
Endotoxin:
Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at
Shipping: This product is provided as lyophilized powder which is shipped with ice packs.
Formulation: Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.2.Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.Please refer to the specific buffer information in the printed man
Reconstitution: Please refer to the printed manual for detailed information.
Background: Surfactant Pulmonary-Associated Protein D (SP-D) is a 43 kDa member of the collectin family of innate immune modulators. Its principal components consist of a collagen-like region and a C-terminal carbohydrate recognition domain (CRD), a structure that places it in a subset of pattern recognition proteins termed defense collagens. SP-D is constitutively secreted by alveolar lining cells and epithelium associated with tubular structures and induced in cardiac smooth muscle and endothelial cells. It binds both secreted and transmembrane proteins that transduce its function. It binds human neutrophil defensins, modulating influenza anti-viral defense. It binds MD-2/LY96, a secreted protein that cooperates with Toll-like receptors (TLRs) in the response of macrophages to bacterial lipopolysaccharides (LPS) or cell wall components. It also binds macrophage CD14 and TLRs directly, blocking binding of LPS and down-regulating TNF-α secretion. SP-D binding of both SIRPα and the calreticulin/CD91 complex on macrophages allows for a graded response to environmental challenge.
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