Homology alignment of P. infestans (putative phosphoenolpyruvate carboxykinase; PISP34) and P. halstedii 57 kDa protein. Partial alignment of PISP34 protein of P. infestans to the 57 kDa elicitor protein of P. halstedii is shown. Identity between both proteins amounts to 359 of 636 amino acids (56.4%). Asterisks (*) denotes homology and colon (:) denotes similarity of amino acids. Boxed letters (grey) mark de novo sequenced peptide candidates as shown in table 2.