I edited my earlier post to thank you for taking the trouble to explain it all but you were too quick off the mark and missed my edit.EXACTLY. Met is the hardest AA to find in good quantity in green growing things.
Protein building begins with Met (in almost every case). Literally the first amino acid used to build a protein is Methionine. Now Met is often cleaved off later in the process - its why the needs for Lys and Thre are higher than Met - but without Met to start with, none of the others can be used. Its like the train engine moving box cars around to build a bigger train....
So thank you again!