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Stover, C.M.* ; Lynch, N.J.* ; Dahl, M.R.* ; Hanson, S.* ; Takahashi, M.* ; Frankenberger, M. ; Ziegler-Heitbrock, L. ; Eperon, I.* ; Thiel, S.* ; Schwaeble, W.J.*

Murine serine proteases MASP-1 and MASP-3, components of the lechtin pathway activation complex of complement, are encoded by a single structural gene.

Genes Immun. 4, 374-384 (2003)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Activation of the lectin pathway of complement is initiated by the binding to microbial carbohydrate structures of a multimolecular fluid-phase complex composed of a carbohydrate recognition subcomponent that associates with three specific serine proteases and an enzymatically inert protein of 19 kDa. The first carbohydrate recognition subcomponent of the lectin pathway identified was mannan-binding lectin (MBL), hence the serine proteases were named MBL-associated serine proteases (MASPs) and numbered according to the sequence of their discovery. Here we describe the primary structures of the two distinct serine proteases MASP-1 and MASP-3 in the rat (and of MASP-3 in the mouse), show their association with plasma MBL complexes, and demonstrate that in rat and mouse, as in man, MASP-1 and MASP-3 are encoded by a single structural gene. For both species, we present the genomic region and regulatory elements responsible for the processing of either MASP-1 or MASP-3 mRNA by alternative splicing/alternative polyadenylation. Furthermore, we demonstrate the evolutionary conservation of MASP-3 mRNA in cDNA transcripts from guinea pig, rabbit, pufferfish, and cow.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords innate immunity; complement serine proteases; lectin pathway; alternative splicing/polyadenylation
ISSN (print) / ISBN 1466-4879
e-ISSN 1476-5470
Quellenangaben Volume: 4, Issue: 5, Pages: 374-384 Article Number: , Supplement: ,
Publisher Nature Publishing Group
Non-patent literature Publications
Reviewing status Peer reviewed