At1g59870: PEN3 (PENETRATION 3)

ATP binding cassette transporter. Localized to the plasma membrane in uninfected cells. In infected leaves, the protein concentrated at infection sites. Contributes to nonhost resistance to inappropriate pathogens that enter by direct penetration in a salicylic acid���dependent manner. Required for mlo resistance. Has Cd transporter activity (Cd2 extrusion pump) and contributes to heavy metal resistance.