Human SP-D/SFTPD, C-His Tag Protein
Catalog# HA211160
Human SP-D/SFTPD, C-His Tag Protein
Product Information
Product name
Human SP-D/SFTPD, C-His Tag Protein
Catalog No.
HA211160
Predicted molecular mass
37.3 kD
Protein construction description
A DNA sequence encoding the human SP-D/SFTPD protein (P35247) (Ala 21-Phe 375) was expressed with a His tag at the C-terminus.
Accession
P35247
Protein construction
Source
HEK293
Purity
>95% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU per μg by the LAL method.
Formulation
Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4, 5% Trehalose, 5% mannitol.
Species
Human
Background
Surfactant protein D, also known as SP-D, is a lung surfactant protein part of the collagenous family of lectins called collectin. In humans, SP-D is encoded by the SFTPD gene and is part of the innate immune system. Each SP-D subunit is composed of an N-terminal domain, a collagenous region, a nucleating neck region, and a C-terminal lectin domain. Three of these subunits assemble to form a homotrimer, which further assemble into a tetrameric complex. Surfactant protein D has been shown to interact with DMBT1, and hemagglutinin of influenza A virus. Post-translational modification of SP-D i.e. S-nitrosylation switches its function.
Usage guide
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped with blue ice. Bulk packages of recombinant proteins are provided as frozen liquid which are shipped with dry ice.
Storage
Please avoid repeated freeze-thaw cycles. Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃ It is recommended that aliquot the reconstituted solution to minimize freeze-thaw cycles.
Reconstitution
Reconstitute at 250 μg/ml in sterile water.
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