binding / heme binding. similar to hypothetical protein OsJ_002364 [Oryza sativa (japonica cultivar-group)] (GB:EAZ12539.1); similar to predicted protein [Physcomitrella patens subsp. patens] (GB:EDQ66138.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO44137.1); contains InterPro domain Tetratricopeptide TPR2 (InterPro:IPR013105)