ENGINEERED PRIMATE CYSTINE/CYSTEINE DEGRADING ENZYMES AS ANTINEOGENIC AGENTS

摘要

Methods and compositions related to the engineering of a protein with L-cyst(e)ine degrading enzyme activity are described. For example, in certain aspects there may be disclosed a modified cystathionine-γ-lyase comprising one or more amino acid substitutions and capable of degrading L-cyst(e)ine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with L-cyst(e)ine using the disclosed proteins or nucleic acids.

主权项

1. An isolated, modified primate cystathionine-γ-lyase (CGL) enzyme having at least one substitution relative to a native primate CGL amino acid sequence (see SEQ ID NOs: 1 and 7-10), said at least one substitution including a threonine at position 59 of the native primate CGL sequence.