PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21527629-1 2011 Leakiness (Phi), the proportion of carbon fixed by phosphoenolpyruvate carboxylation that leaks out of the bundle-sheath cells, determines C(4) photosynthetic efficiency. Phosphoenolpyruvate 51-70 glucose-6-phosphate isomerase Homo sapiens 11-14