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1a, CAP, and HEL oligomerize. (A) Yeast expressing 1a, CAP, or HEL were treated with 1% paraformaldehyde to cross-link proteins, analyzed on 4% to 8% Tris-acetate gels, and immunoblotted with anti-1a antibody. Asterisks denote bands of interest. Numbers to the left of blots denote molecular-mass markers. (B) Yeast expressing free GFP or CAP fused to GFP were treated and analyzed as described for panel A.
