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. 1999 May 3;145(3):469–479. doi: 10.1083/jcb.145.3.469

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KIF21A and KIF21B identify a new family of KLPs. (A) Alignment of KIF21A and KIF21B amino acid sequences. Solid lines, amino acid identity; dots, amino acid similarities. (B) Dendrogram analysis comparing KIF21A and KIF21B motor domains to many previously identified KLPs.