>sp|P51120|GLN1B_TRITH Glutamine synthetase OS=Trichodesmium thiebautii GN=glnA PIEKHHHEVATAGQNEIACQFNTLVKKADEIQVYKYVVHNVAHAYGQTATFMPKPLVGDN GSGMHCHQSISKDGVNIFAGDKYAGLSEEALYYIGGIIKHARAINAFRNASTNSYKRLS