Proteome Sciences plc announced the expansion of its proteomics services into the United States of America. The facility will be based in San Diego, California, to provide easy access to the established and growing pharmaceutical and biotechnology proteomics services requirements across the US and, in particular, the research hubs on the west coast. The Company's subsidiary, Proteome Sciences US Inc, has commenced staff recruitment and the new facility is expected to be fully operational in the fourth quarter of 2023.