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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The human factor H-related gene 2 (FHR2): structure and linkage to the coagulation factor XIIIb gene.

The human factor H-related gene 2 (FHR2) encodes a serum protein structurally and immunologically related to complement factor H. We describe the isolation and genomic organization of the human FHR2 gene from a yeast artificial chromosome library. The FHR2 gene is organized in five exons and spans about 7 kilobases (kb) of human genomic DNA. A comparison with the corresponding cDNA sequence (clone DDESK59) shows that the analyzed FHR2 gene has a deleted region within exon 4. A new splice acceptor site created in the truncated exon indicates that the analyzed gene could be translated to a truncated protein. Further, we demonstrate that the genes for FHR2 and beta subunit of coagulation factor XIII are located in the same 165 kb YAC DNA. Thus, the three structurally related genes FXIIIb, FHR2, and factor H are linked on human chromosome 1 in the regulators of complement activation (RCA) gene cluster. The physical linkage of the FHR2 and the factor H genes provides additional evidence for a close relatedness of complement factor H and the factor H-related proteins. The linkage and the almost exclusive organization in short consensus repeat-containing domains indicates a close evolutionary relationship of the FXIIIb, FHR2, and factor H genes.[1]


  1. The human factor H-related gene 2 (FHR2): structure and linkage to the coagulation factor XIIIb gene. Skerka, C., Moulds, J.M., Taillon-Miller, P., Hourcade, D., Zipfel, P.F. Immunogenetics (1995) [Pubmed]
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