F-actin capping protein beta subunit family protein. Identical to Probable F-actin-capping protein subunit beta [Arabidopsis Thaliana] (GB:Q9M9G7); similar to unnamed protein product [Vitis vinifera] (GB:CAO67546.1); contains InterPro domain F-actin capping protein, beta subunit; (InterPro:IPR001698)