Abstract: Provided is a low sulfated ash engine oil lubricant composition containing organic friction modifiers with improved fuel economy and corrosion resistance. The lubricant composition includes one or more metal free corrosion inhibitors having an organic acid group and/or one or more organo metallic naphthalene molecules having a ASTM D2896 total base number less than 3 mg KOH/g. The resulting lubricant composition improves ASTM D6557 corrosion protection for low sulfated ash engine oils containing organic friction modifiers, while maintaining exceptional fuel economy performance.

Abstract: Morpholine derivatives useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds.

Abstract: Morpholine derivatives useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds.

Abstract: Provided are compositions comprising an aminoacyl tRNA synthetase that selectively recognizes a boronic amino acid. Methods of incorporating a boronic amino acid into a target polypeptides and target polypeptides produced by the methods are also provided. Methods of producing a protein, which methods comprise site-specifically encoding a boronic amino acid residue into a mutant protein and selectively converting the boronic amino acid residue into a natural amino acid residue are provided. Also provided are compositions comprising a solid phase matrix covalently bound to a polypeptide through a boronic amino acid residue. In addition, compositions comprising a purified population of polypeptide molecules that each comprise a borono amino acid at a selected site are provided.