Actin Dimer Cross-linked Between Residues 41 and 374 and proteolytically cleaved by subtilisin between residues 47 and 48.

Multiple crystal structures of actin dimers and their implications for interactions in the actin filament.

The crystal structure of a cross-linked actin dimer suggests a detailed molecular interface in F-actin.

DEDETTALVCDNGSGLVKAGFAGDDAPRAVFPSIVGRPRHQGVMVGMGQKDSYVGDEAQSKRGILTLKYPIEHGIITNWD
DMEKIWHHTFYNELRVAPEEHPTLLTEAPLNPKANREKMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLDSGDGVT
HNVPIYEGYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKLCYVALDFENEMATAASSSSLEKSY
ELPDGQVITIGNERFRCPETLFQPSFIGMESAGIHETTYNSIMKCDIDIRKDLYANNVMSGGTTMYPGIADRMQKEITAL
APSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWITKQEYDEAGPSIVHRKCF

30% MPD, 0.1 M sodium acetate, 0.01M calcium chloride, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

different crystal form of the same actin dimer

same crystal form, but not proteolytically cleaved

HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS

Biological unit 1 is generated by a unit cell translation along the "c" axis applied to chain A. Biological unit 2 is generated by a unit cell translation along the "c" axis applied to chain B.

cross-linked dimer, proteolytically cleaved, STRUCTURAL PROTEIN