作者: Fernando Segade
DOI: 10.1007/978-3-642-36002-2_6
关键词: Microfibril 、 Natural selection 、 Chordate 、 Vertebrate 、 Gene duplication 、 Functional divergence 、 Evolutionary biology 、 Gene 、 Biology 、 Molecular evolution
摘要: This chapter reviews the evolutionary histories of two representative families microfibril-associated proteins as distinctive examples adding novelty to ancient microfibril genetic module. The glycoproteins (MAGPs), a recent addition microfibril, evolved from MAGP1-like gene in basal vertebrates. extant MAGP1 and MAGP2 genes arose multigene duplication event, with functional divergence mediated by relaxation natural selection correlated evolution between Notch1. Unique functions bony vertebrates likely gain function at N-terminus. fibulins (FBLNs) appeared base metazoans, contemporaneously Fibrillin gene. Diversification accelerated chordates vertebrates, total nine FBLN genes. vertebrate FBLN3/4/5 clade elastogenic FBLNs chordate ancestor events quick succession. Accelerated sequence expression patterns occurred preferentially on FBLN5 branch. Coevolution motifs their partners elastic fiber deposition contributed nonredundant specialization FBLNs.