1FBR: Fourth And Fifth Fibronectin Type I Module Pair
reference: Solution structure of a pair of fibronectin type 1 modules with fibrin binding activity., Williams MJ, Phan I, Harvey TS, Rostagno A, Gold LI, Campbell ID, J Mol Biol 1994 Jan 28;235(4):1302-11. PMID: 8308892

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