... calcium-binding loops of EF-hand proteins, have chemical shifts . 10 p.p.m. for filled loops and chemical shifts of < 8 p.p.m. for emptyloops [50]. The chemical shifts of CR I–II, Calb I – II and several ... University of Debrecen, Hungary;3Department of Inorganic Chemistry, and 4Research Group for Antibiotics, Department of Chemistry, University of Debrecen, Hungary;5International Institute of Molecular ... 2001)Abbreviations: CR, calretinin (rat isoform, unless otherwise stated); CRI–II, calretinin residues 1–100 consisting of the first pair of EF-handmotifs; Calb, calbindin D28k(rat isoform, unless otherwise...