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Club Cell Protein (CC16) Human E. coli

  • Regulatory status:RUO
  • Type:Recombinant protein
  • Source:E. coli
  • Other names:CC10, CC16, uteroglobin, urinary protein 1, Clara Cell Secretory Protein, Casein kinase 1, CK1
  • Species:Human
Cat. No. Size Price
1 - 4 pcs / 5 - 9 pcs / 10+ pcs

RD172022100 0.1 mg $421 / $370 / On request
PubMed Product Details
Technical Data


Recombinant protein


Total 80 AA. MW: 9.2 kDa (calculated). N-Terminal His-tag (10 extra AA). UniprotKB acc.no. P11684

Amino Acid Sequence



E. coli


˃ 90 % by SDS-PAGE


14% SDS-PAGE separation of Club Cell Protein
1. M.W. marker – 14, 21, 31, 45, 66, 97 kDa
2. reduced and boiled sample, 2.5μg/lane
3. non-reduced and non-boiled sample, 2.5μg/lane


< 1.0 EU/µg


Filtered (0.4 μm) and lyophilized from 0.5 mg/mL solution in 0.05 M phosphate buffer, 0.075 M NaCl, pH 7.4


Add 200 μL of deionized water to prepare a working stock solution of 0.5 mg/mL and let the lyophilized pellet dissolve completely.


Western blotting, ELISA


At ambient temperature. Upon receipt, store the product at the temperature recommended below.


Store the lyophilized protein at -80 °C. Lyophilized protein remains stable until the expiry date when stored at -80 °C. Aliquot reconstituted protein to avoid repeated freezing/thawing cycles and store at -80 °C for long term storage. Reconstituted protein can be stored at 4 °C for a week.

Quality Control Test

BCA to determine quantity of the protein.
SDS PAGE to determine purity of the protein. Endotoxin level determination.


This product is intended for research use only.


Research topic

Immune Response, Infection and Inflammation, Pulmonary diseases, COVID-19


Human Club Cell Protein (CC16, CC10 and also called uteroglobin, urinary protein 1 or Clara Cell Secretory Protein) belongs to the family of secretoglobins and is a secreted protein product of non-ciliated bronchiolar Club cells. Its function remains to be elucidated but there is convincing data suggesting its phospholipase A2 inhibitory activity as well as a number of other immunomodulatory features including inhibition of interferon gamma signaling and Th1 vs. Th2 lymphocyte regulation. It was proposed as a potential peripheral marker of respiratory epithelial injury and bronchial dysfunction. In serum, its increase is associated with age, asbestos, nitrogen chloride and ozone exposure, sarcoidosis and high PEEP ventilation. Decreased serum CC16 levels are found after pulmonary resection, in silica-exposed workers, smokers and in asthma. Decreased CC16 concentrations were also found in the amniotic fluid of fetuses suffering from pulmonary hypoplasia caused by various mechanisms (diaphragmatic hernia, diabetic fetopathy, Turner and Down syndrome).

Summary References (10)

References to Club Cell Protein

  • Deraz T, Kamel TB, El-Mogy MI, Moustafa EH. Serum and nasal lavage fluid Clara cell protein decreases in children with allergic rhinitis. Int J Pediatr Otorhinolaryngol, 76(9):1241–4 (2012)
  • Wuetzler S, Backhaus L, Henrich D, Geiger E: Clara cell protein16: A biomarker for detecting secondary respiratory complications in patients with multiple injuries. J Trauma Acute Care Surgery 73(4): 838–842 (2012)
  • Chowdhury B, Zhang Z, Mukherjee AB. Uteroglobin interacts with the heparin-binding site of fibronectin and prevents fibronectin-IgA complex formation found in IgA-nephropathy. FEBS Lett. 82(5):611–5 (2008)
  • Braido F, Riccio AM, Guerra L, Gamalero C, Zolezzi A, Tarantini F, De Giovanni B, Folli C, Descalzi D, Canonica GW. Clara cell 16 protein in COPD sputum: a marker of small airways damage? Respir Med. 101(10):2119–24 (2007)
  • Shijubo N., Kawabata I., Sato N., Itoh Y.: Clinical Aspects of Clara Cell 10-kDa Protein/ Uteroglobin (Secretoglobin 1A1), Current Pharmaceutical Design, 9, 1139–1149, (2003)
  • Nord M., Schubert K., Cassel T., Andersson O., Riise G.: Decreased serum and bronchoalveolar lavage levels of Clara cell secretory protein (CC16) is associated with bronchiolitis obliterans syndrome and airway neutrophilia in lung transplant recipients. Transplantation, 73, 1264–1269, (2002)
  • Petrek M., Hermans C., Kolek V., Fialova J., Bernard A.: Clara cell protein (CC16) in serum and bronchoalveolar lavage fluid of subjects exposed to asbestos. Biomarkers, 7(1), 58–67, (2002)
  • Hermans C., Petrek M., Kolek V., Weynand B., Pieters T., Lambert M., Bernard A.: Serum Clara cell protein (CC16), a marker of the integrity of the air-blood barrier in sarcoidosis. Eur Respir J, 18(3), 507–514 (2001)
  • Bernard A., Roels H., Lauwerys R., Witters R., Gielens C., Soumillion A. et al.: Human urinary protein 1: Evidence for identity with the Clara cell protein and occurrence in respiratory tract and urogenital secretions. Clin Chim Acta, 207, 239–249, (1992)
  • Bernard A., Lauwerys R., Noel A., Vandeleene B., Lambert A.: Urine protein 1: a sexdependent marker of tubular or glomerular dysfunction. Clin Chem, 35, 2141–2142, (1989)
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