Fig. 6.
Model of protein 4.1R 5′ gene expression.
(A) Differential splicing of 5′ putative exons to alternative splice acceptor sites in exon 2. (B) The distinct protein isoforms resulting from translation of 1A- and 1B-type mRNAs. MBD indicates membrane binding domain; U2, unique region 2; SAB, spectrin-actin binding domain; CTD, C-terminal domain; and ss, splice site.