The invention provides a mutant hydrolase protein with enhanced kinetics and functional expression, as well as polynucleotides encoding the mutant proteins and methods of using the polynucleotides and mutant proteins.

Disclosed are genetically engineered organisms, such as yeast and bacteria, that have the ability to metabolize atypical nitrogen sources, such as melamine and cyanamide. Fermentation methods using the genetically engineered organisms are also described. The methods of the invention are robust processes for the industrial bioproduction of a variety of compounds, including commodities, fine chemicals, and pharmaceuticals.

The invention provides a mutant hydrolase protein with enhanced kinetics and functional expression, as well as polynucleotides encoding the mutant proteins and methods of using the polynucleotides and mutant proteins.

Compositions and methods relating to paraoxonase fusion polypeptides are disclosed. In some aspects, the fusions are bispecific molecules that include a first biologically active polypeptide linked amino-terminal to a biologically active paraoxonase, wherein the first biologically active polypeptide is a DNase, an RNase, a SOD1, a CTLA-4 extracellular domain, a CD40 extracellular domain, or a polypeptide that specifically binds and neutralizes an inflammatory cytokine. Bispecific fusions may further include a second biologically active polypeptide (e.g., a dimerizing or FcRn-binding domain) linked carboxyl-terminal to the first biologically active polypeptide and amino-terminal to the paraoxonase. In other aspects, a fusion polypeptide includes a biologically active paraoxonase linked carboxyl-terminal or amino-terminal to a dimerizing or FcRn-binding domain. Also disclosed are dimeric proteins comprising first and second paraoxonase fusion polypeptides as disclosed herein. The fusion polypeptides and dimeric proteins are useful in methods for therapy.

The invention provides a mutant hydrolase protein with enhanced kinetics and functional expression, as well as polynucleotides encoding the mutant proteins and methods of using the polynucleotides and mutant proteins.

The invention provides a mutant hydrolase protein with enhanced kinetics and functional expression, as well as polynucleotides encoding the mutant proteins and methods of using the polynucleotides and mutant proteins.

Compositions and methods relating to paraoxonase fusion polypeptides are disclosed. In some aspects, the fusions are bispecific molecules that include a first biologically active polypeptide linked amino-terminal to a biologically active paraoxonase, wherein the first biologically active polypeptide is a DNase, an RNase, a SOD1, a CTLA-4 extracellular domain, a CD40 extracellular domain, or a polypeptide that specifically binds and neutralizes an inflammatory cytokine. Bispecific fusions may further include a second biologically active polypeptide (e.g., a dimerizing or FcRn-binding domain) linked carboxyl-terminal to the first biologically active polypeptide and amino-terminal to the paraoxonase. In other aspects, a fusion polypeptide includes a biologically active paraoxonase linked carboxyl-terminal or amino-terminal to a dimerizing or FcRn-binding domain. Also disclosed are dimeric proteins comprising first and second paraoxonase fusion polypeptides as disclosed herein. The fusion polypeptides and dimeric proteins are useful in methods for therapy.