PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15578836-7 2004 Moreover the X-ray structure of rac-2 was also determined and exhibits as an outstanding feature the formation of a one-dimensional supramolecular species in which the cohesion of the system is maintained by strong hydrogen bonding between carboxylic acid groups of enantiomers Delta-2 and Lambda-2 (cationic parts) with d(O...O) = 2.6 A in agreement with the infrared results. Hydrogen 215-223 Rac family small GTPase 2 Homo sapiens 32-37 14639640-5 2003 The crystal structure of rac-2 reveals meso bilayers of hydrogen-bonded aggregates. Hydrogen 56-64 Rac family small GTPase 2 Homo sapiens 25-30