Abstract
The collectins are a group of soluble multimeric lectins, which contain collagenous segments, and resemble the complement protein C1q in aspects of their structures and functions. This group of proteins, which includes MBP, SP-A, SP-D, conglutinin and CL-43, are known to act as opsonins in various circumstances, and are likely to have roles in innate immunity. The focus of current research is to pursue the hypothesis that the collectins recognize and bind to non-host carbohydrate structures on microorganisms and particles, and participate in the processing or elimination of such material, either by direct interaction with phagocytic cell receptors, or by indirect routes such as complement activation .
Full text
PDF





Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Erdei A., Reid K. B. Characterization of C1q-binding material released from the membranes of Raji and U937 cells by limited proteolysis with trypsin. Biochem J. 1988 Oct 15;255(2):493–499. [PMC free article] [PubMed] [Google Scholar]
- Ghebrehiwet B., Peerschke E. I. The C1q-R participates in immunoregulation and signal transduction. Behring Inst Mitt. 1993 Dec;(93):236–240. [PubMed] [Google Scholar]
- Ghebrehiwet B., Silvestri L., McDevitt C. Identification of the Raji cell membrane-derived C1q inhibitor as a receptor for human C1q. Purification and immunochemical characterization. J Exp Med. 1984 Nov 1;160(5):1375–1389. doi: 10.1084/jem.160.5.1375. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Guan E. N., Burgess W. H., Robinson S. L., Goodman E. B., McTigue K. J., Tenner A. J. Phagocytic cell molecules that bind the collagen-like region of C1q. Involvement in the C1q-mediated enhancement of phagocytosis. J Biol Chem. 1991 Oct 25;266(30):20345–20355. [PubMed] [Google Scholar]
- Holmskov U., Jensenius J. C. Structure and function of collectins: humoral C-type lectins with collagenous regions. Behring Inst Mitt. 1993 Dec;(93):224–235. [PubMed] [Google Scholar]
- Holmskov U., Malhotra R., Sim R. B., Jensenius J. C. Collectins: collagenous C-type lectins of the innate immune defense system. Immunol Today. 1994 Feb;15(2):67–74. doi: 10.1016/0167-5699(94)90136-8. [DOI] [PubMed] [Google Scholar]
- Ihara I., Harada Y., Ihara S., Kawakami M. A new complement-dependent bactericidal factor found in nonimmune mouse sera: specific binding to polysaccharide of Ra chemotype Salmonella. J Immunol. 1982 Mar;128(3):1256–1260. [PubMed] [Google Scholar]
- Ikeda K., Sannoh T., Kawasaki N., Kawasaki T., Yamashina I. Serum lectin with known structure activates complement through the classical pathway. J Biol Chem. 1987 Jun 5;262(16):7451–7454. [PubMed] [Google Scholar]
- Ji Y. H., Matsushita M., Okada H., Fujita T., Kawakami M. The C4 and C2 but not C1 components of complement are responsible for the complement activation triggered by the Ra-reactive factor. J Immunol. 1988 Dec 15;141(12):4271–4275. [PubMed] [Google Scholar]
- Lu J. H., Thiel S., Wiedemann H., Timpl R., Reid K. B. Binding of the pentamer/hexamer forms of mannan-binding protein to zymosan activates the proenzyme C1r2C1s2 complex, of the classical pathway of complement, without involvement of C1q. J Immunol. 1990 Mar 15;144(6):2287–2294. [PubMed] [Google Scholar]
- Lu J., Wiedemann H., Timpl R., Reid K. B. Similarity in structure between C1q and the collectins as judged by electron microscopy. Behring Inst Mitt. 1993 Dec;(93):6–16. [PubMed] [Google Scholar]
- Lu J., Wiedemann H., Timpl R., Reid K. B. Similarity in structure between C1q and the collectins as judged by electron microscopy. Behring Inst Mitt. 1993 Dec;(93):6–16. [PubMed] [Google Scholar]
- Lu J., Willis A. C., Sim R. B. A calreticulin-like protein co-purifies with a '60 kD' component of Ro/SSA, but is not recognized by antibodies in Sjögren's syndrome sera. Clin Exp Immunol. 1993 Dec;94(3):429–434. doi: 10.1111/j.1365-2249.1993.tb08213.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Malhotra R. Collectin receptor (C1q receptor): structure and function. Behring Inst Mitt. 1993 Dec;(93):254–261. [PubMed] [Google Scholar]
- Malhotra R., Laursen S. B., Willis A. C., Sim R. B. Localization of the receptor-binding site in the collectin family of proteins. Biochem J. 1993 Jul 1;293(Pt 1):15–19. doi: 10.1042/bj2930015. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Malhotra R., Sim R. B. Chemical and hydrodynamic characterization of the human leucocyte receptor for complement subcomponent C1q. Biochem J. 1989 Sep 1;262(2):625–631. doi: 10.1042/bj2620625. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Malhotra R., Thiel S., Reid K. B., Sim R. B. Human leukocyte C1q receptor binds other soluble proteins with collagen domains. J Exp Med. 1990 Sep 1;172(3):955–959. doi: 10.1084/jem.172.3.955. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Malhotra R., Willis A. C., Jensenius J. C., Jackson J., Sim R. B. Structure and homology of human C1q receptor (collectin receptor). Immunology. 1993 Mar;78(3):341–348. [PMC free article] [PubMed] [Google Scholar]
- Matsushita M., Fujita T. Activation of the classical complement pathway by mannose-binding protein in association with a novel C1s-like serine protease. J Exp Med. 1992 Dec 1;176(6):1497–1502. doi: 10.1084/jem.176.6.1497. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Matsushita M., Takahashi A., Hatsuse H., Kawakami M., Fujita T. Human mannose-binding protein is identical to a component of Ra-reactive factor. Biochem Biophys Res Commun. 1992 Mar 16;183(2):645–651. doi: 10.1016/0006-291x(92)90531-o. [DOI] [PubMed] [Google Scholar]
- McCauliffe D. P., Lux F. A., Lieu T. S., Sanz I., Hanke J., Newkirk M. M., Bachinski L. L., Itoh Y., Siciliano M. J., Reichlin M. Molecular cloning, expression, and chromosome 19 localization of a human Ro/SS-A autoantigen. J Clin Invest. 1990 May;85(5):1379–1391. doi: 10.1172/JCI114582. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Meilof J. F., Van der Lelij A., Rokeach L. A., Hoch S. O., Smeenk R. J. Autoimmunity and filariasis. Autoantibodies against cytoplasmic cellular proteins in sera of patients with onchocerciasis. J Immunol. 1993 Nov 15;151(10):5800–5809. [PubMed] [Google Scholar]
- Rokeach L. A., Haselby J. A., Meilof J. F., Smeenk R. J., Unnasch T. R., Greene B. M., Hoch S. O. Characterization of the autoantigen calreticulin. J Immunol. 1991 Nov 1;147(9):3031–3039. [PubMed] [Google Scholar]
- Sastry K., Ezekowitz R. A. Collectins: pattern recognition molecules involved in first line host defense. Curr Opin Immunol. 1993 Feb;5(1):59–66. doi: 10.1016/0952-7915(93)90082-4. [DOI] [PubMed] [Google Scholar]
- Sim R. B., Malhotra R. Interactions of carbohydrates and lectins with complement. Biochem Soc Trans. 1994 Feb;22(1):106–111. doi: 10.1042/bst0220106. [DOI] [PubMed] [Google Scholar]
- Sim R. B., Reid K. B. C1: molecular interactions with activating systems. Immunol Today. 1991 Sep;12(9):307–311. doi: 10.1016/0167-5699(91)90004-D. [DOI] [PubMed] [Google Scholar]
- Sumiya M., Super M., Tabona P., Levinsky R. J., Arai T., Turner M. W., Summerfield J. A. Molecular basis of opsonic defect in immunodeficient children. Lancet. 1991 Jun 29;337(8757):1569–1570. doi: 10.1016/0140-6736(91)93263-9. [DOI] [PubMed] [Google Scholar]
- Takada F., Takayama Y., Hatsuse H., Kawakami M. A new member of the C1s family of complement proteins found in a bactericidal factor, Ra-reactive factor, in human serum. Biochem Biophys Res Commun. 1993 Oct 29;196(2):1003–1009. doi: 10.1006/bbrc.1993.2349. [DOI] [PubMed] [Google Scholar]
- Takayama Y., Takada F., Takahashi A., Kawakami M. A 100-kDa protein in the C4-activating component of Ra-reactive factor is a new serine protease having module organization similar to C1r and C1s. J Immunol. 1994 Mar 1;152(5):2308–2316. [PubMed] [Google Scholar]
- Tenner A. J. Functional aspects of the C1q receptors. Behring Inst Mitt. 1993 Dec;(93):241–253. [PubMed] [Google Scholar]
- Thiel S., Reid K. B. Structures and functions associated with the group of mammalian lectins containing collagen-like sequences. FEBS Lett. 1989 Jun 19;250(1):78–84. doi: 10.1016/0014-5793(89)80689-1. [DOI] [PubMed] [Google Scholar]
- Voss T., Eistetter H., Schäfer K. P., Engel J. Macromolecular organization of natural and recombinant lung surfactant protein SP 28-36. Structural homology with the complement factor C1q. J Mol Biol. 1988 May 5;201(1):219–227. doi: 10.1016/0022-2836(88)90448-2. [DOI] [PubMed] [Google Scholar]
- Weis W. I., Drickamer K., Hendrickson W. A. Structure of a C-type mannose-binding protein complexed with an oligosaccharide. Nature. 1992 Nov 12;360(6400):127–134. doi: 10.1038/360127a0. [DOI] [PubMed] [Google Scholar]
