Pectinesterase inhibitor 18 T23J18.23 Pectin methylesterase 4 AtPMEpcrA Pectinesterase/pectinesterase inhibitor 18 At1g11580 Pectin methylesterase 18 PME18_ARATH T23J18.33 Acts in the modification of cell walls via demethylesterification of cell wall pectin. Inhibits the elongation phase of protein synthesis. T23J18.24 ARATH4 Pectin methylesterase inhibitor 18 Ribosome-inactivating protein Bifunctional pectinesterase 18/rRNA N-glycosylase 557 PME18 MSNSNQPLLSKPKSLKHKNLCLVLSFVAILGSVAFFTAQLISVNTNNNDDSLLTTSQICHGAHDQDSCQALLSEFTTLSLSKLNRLDLLHVFLKNSVWRLESTMTMVSEARIRSNGVRDKAGFADCEEMMDVSKDRMMSSMEELRGGNYNLESYSNVHTWLSSVLTNYMTCLESISDVSVNSKQIVKPQLEDLVSRARVALAIFVSVLPARDDLKMIISNRFPSWLTALDRKLLESSPKTLKVTANVVVAKDGTGKFKTVNEAVAAAPENSNTRYVIYVKKGVYKETIDIGKKKKNLMLVGDGKDATIITGSLNVIDGSTTFRSATVAANGDGFMAQDIWFQNTAGPAKHQAVALRVSADQTVINRCRIDAYQDTLYTHTLRQFYRDSYITGTVDFIFGNSAVVFQNCDIVARNPGAGQKNMLTAQGREDQNQNTAISIQKCKITASSDLAPVKGSVKTFLGRPWKLYSRTVIMQSFIDNHIDPAGWFPWDGEFALSTLYYGEYANTGPGADTSKRVNWKGFKVIKDSKEAEQFTVAKLIQGGLWLKPTGVTFQEWL