Protein
Isochorismate synthase 1, chloroplastic
Organism
Arabidopsis thaliana
Function
Involved in the synthesis of salicylic acid (SA) required for both local and systemic acquired resistance (LAR and SAR) while SA synthesized through the phenylalanine ammonium lyase (PAL) pathway seems to potentiate plant cell death. Also involved in phylloquinone (vitamin K1) synthesis. Has no isochorismate pyruvate lyase (IPL) activity.
Similarity
Belongs to the isochorismate synthase family.
Sequence
MASLQFSSQFLGSNTKTHSSIISISRSYSPTPFTRFSRKKYESCSMSMNGCDGDFKTPLGTVETRTMTAVLSPAAATERLISAVSELKSQPPSFSSGVVRLQVPIDQQIGAIDWLQAQNEIQPRCFFSRRSDVGRPDLLLDLANENGNGNGNGTVSSDRNLVSVAGIGSAVFFRDLDPFSHDDWRSIRRFLSSTSPLIRAYGGMRFDPNGKIAVEWEPFGAFYFSVPQVEFNEFGGSSMLAATIAWDDELSWTLENAIEALQETMLQVSSVVMKLRNRSLGVSVLSKNHVPTKGAYFPAVEKALEMINQKSSPLNKVVLARNSRIITDTDIDPIAWLAQLQREGHDAYQFCLQPPGAPAFIGNTPERLFQRTQLGVCSEALAATRPRAASSARDMEIERDLLTSPKDDLEFSIVRENIREKLNGICDRVVVKPQKTVRKLARVQHLYSQLAGRLTKEDDEYKILAALHPTPAVCGLPAEEARLLIKEIESFDRGMYAGPIGFFGGEESEFAVGIRSALVEKGLGALIYAGTGIVAGSDPSSEWNELDLKISQFTKSIEYEATTSLQAIN