Avirulence protein. Induces the hypersensitive response (HR)in rice plants carrying the resistance gene Xa10. Activity depends on the presence of the core repeat domains; replacement with repeat domains from other proteins (AvrBs3 of X.euvesicatoria (AC P14727) or AvrXa7 of this organism) does not elicit the HR. Probably acts as a transcription factor in its host plant (rice) to induce plant resistance or disease. Secreted via a type III secretions system (TTSS). Localizes to the plant cell nucleus. The central DNA-binding region is composed of 23.5 tandem core repeats with 1 base-specifying residue (BSR residue 13, also called repeat variable diresidue, RVD, residues 12 and 13) each of which recognizes 1 base in the target DNA. The BSR is probably the only residue which contacts DNA in a sequence-specific manner. The activation domain activates transcription of a reporter gene upon expression in planta and in yeast. The 3 putative nuclear localization signals seem to be highly redundant; only mutation of all 3 knocks out the HR. By combining the central DNA-binding domain with the catalytic domain of the restriction endonuclease FokI, TALE-nuclease (TALEN) enzymes able to target specific dsDNA sequences can be created that enable eukaryotic genome modification. Other potential uses as transcriptional repressors, for transposon targeting, DNA methylation or histone tail modifictions are also possible. Belongs to the transcription activator-like effector (TALE) family.