Abstract: There are provided nucleic acids, including isolated DNA molecules, which encode glutamate 2,3-aminomutase enzymes, polypeptides produced from such nucleic acids and methods of making the nucleic acids and polypeptides. There are further provided methods of producing ?-glutamate from glutamate using glutamate 2,3-aminomutase.

Abstract: A packaged sensor can comprise: a housing, a retaining device disposed in the housing, a sensing element, a sealing member disposed in between the retaining device and the housing terminal end, a first electrical lead, a second electrical lead, and a first support member. The first support member can be disposed between the sealing member and the housing terminal end. The retaining device can be disposed in a chamber in the housing, and can comprise retaining device comprising a first end and a second end, channels extending between the first end and the second end, and can have a sealant material disposed at the first end of the retaining device. The sensing element can have an element terminal end disposed in physical contact with the retaining device.