Surfactant protein D/SFTPD Recombinant Protein | SFTPD recombinant protein

Surfactant protein D/SFTPD Protein, Human, Recombinant (His Tag)

Cat. Num. AAA8120651

• Gene Names: SFTPD; SP-D; PSP-D; SFTP4; COLEC7
• Purity: >90% as determined by SDS-PAGE
• Synonyms: Surfactant protein D/SFTPD; Surfactant protein D/SFTPD Protein; Human; Recombinant (His Tag); Human SFTPD/SP-D/SFTP4 Protein (His Tag); COLEC7 Protein; PSP-D Protein; SFTP4 Protein; SP-D Protein; surfactant protein D; SFTPD recombinant protein

• Host: HEK293 Cells
• Purity/Purification: >90% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Phe375

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Ala 21
• Tag: C-His
• Protein Construction: A DNA sequence encoding the human SFTPD (NP_003010.4) precursor (Met 1-Phe 375) was fused with a polyhistidine tag at the C-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

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Related Product Information for SFTPD recombinant protein

Background: Surfactant pulmonary-associated protein D, also known as SFTPD and SP-D, is a member of the collectin family of C-type lectins that is synthesized in many tissues including respiratory epithelial cells in the lung, and contains one C-type lectin domain and one collagen-like domain. The polymorphic variation in the N-terminal domain of the SP-D molecule influences oligomerization, function, and the concentration of the molecule in serum. SFTPD is produced primarily by alveolar type II cells and nonciliated bronchiolar cells in the lung and is constitutively secreted into the alveoli where it influences surfactant homeostasis, effector cell functions, and host defense. It is upregulated in a variety of inflammatory and infectious conditions including Pneumocystis pneumonia and asthma. SFTPD is humoral molecules of the innate immune system, and is considered a functional candidate in chronic periodontitis. Besides, it is involved in the development of acute and chronic inflammation of the lung. Several human lung diseases are characterized by decreased levels of bronchoalveolar SFTPD. Thus, recombinant SFTPD has been proposed as a therapeutical option for cystic fibrosis, neonatal lung disease and smoking-induced emphysema. Furthermore, SFTPD serum levels can be used as disease activity markers for interstitial lung diseases.

References

Leth-Larsen R, et al. (2005) A common polymorphism in the SFTPD gene influences assembly, function, and concentration of surfactant protein D. J Immunol. 174(3): 1532-8.Moran AP, et al. (2005) Role of surfactant protein D (SP-D) in innate immunity in the gastric mucosa: evidence of interaction with Helicobacter pylori lipopolysaccharide. J Endotoxin Res. 11(6): 357-62.Hartl D, et al. (2006) Surfactant protein D in human lung diseases. Eur J Clin Invest. 36(6): 423-35.Krueger M, et al. (2006) Amino acid variants in Surfactant protein D are not associated with bronchial asthma. Pediatr Allergy Immunol. 17(1): 77-81.Glas J, et al. (2008) Increased plasma concentration of surfactant protein D in chronic periodontitis independent of SFTPD genotype: potential role as a biomarker. Tissue Antigens. 72(1): 21-8.

NCBI and Uniprot Product Information

• NCBI GI #: 61699226
• NCBI GeneID: 6441
• NCBI Accession #: NP_003010.4
• NCBI GenBank Nucleotide #: NM_003019.4
• UniProt Accession #: P35247; Q5T0M3; Q6FH08; Q86YK9; Q8TCD8; Q9UCJ2; Q9UCJ3
• Molecular Weight: 37,728 Da
• NCBI Official Full Name: pulmonary surfactant-associated protein D
• NCBI Official Synonym Full Names: surfactant protein D
• NCBI Official Symbol: SFTPD
• NCBI Official Synonym Symbols: SP-D; PSP-D; SFTP4; COLEC7
• NCBI Protein Information: pulmonary surfactant-associated protein D; collectin 7; collectin-7; lung surfactant protein D; pulmonary surfactant apoprotein; surfactant, pulmonary-associated protein D; surfactant-associated protein, pulmonary 4
• UniProt Protein Name: Pulmonary surfactant-associated protein D
• Protein Family: Pulmonary surfactant-associated protein
• UniProt Gene Name: SFTPD
• UniProt Synonym Gene Names: COLEC7; PSPD; SFTP4; PSP-D; SP-D
• UniProt Entry Name: SFTPD_HUMAN

NCBI Description

The protein encoded by this gene is part of the innate immune response, protecting the lungs against inhaled microorganisms and chemicals. The encoded protein may also be involved in surfactant metabolism. [provided by RefSeq, Jul 2015]

Uniprot Description

SFTPD: Contributes to the lung's defense against inhaled microorganisms. May participate in the extracellular reorganization or turnover of pulmonary surfactant. Binds strongly maltose residues and to a lesser extent other alpha-glucosyl moieties. Belongs to the SFTPD family.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 10q22.2-q23.1

Cellular Component: extracellular space; proteinaceous extracellular matrix; collagen; lysosome; endocytic vesicle; extracellular region

Molecular Function: protein binding; carbohydrate binding

Biological Process: receptor-mediated endocytosis; negative regulation of T cell proliferation; positive regulation of phagocytosis; negative regulation of interleukin-2 biosynthetic process; defense response to bacterium; innate immune response; respiratory gaseous exchange; surfactant homeostasis; macrophage chemotaxis; alveolus development; regulation of cytokine production