PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16849170-3 2005 His-26 and His-33 are both solvent exposed, and the results suggest that one of these histidine residues acts as a bridge in the electron transfer to and from the haem iron of cytochrome c. Histidine 0-3 cytochrome c, somatic Equus caballus 176-188 16849170-3 2005 His-26 and His-33 are both solvent exposed, and the results suggest that one of these histidine residues acts as a bridge in the electron transfer to and from the haem iron of cytochrome c. Histidine 11-14 cytochrome c, somatic Equus caballus 176-188 16849170-3 2005 His-26 and His-33 are both solvent exposed, and the results suggest that one of these histidine residues acts as a bridge in the electron transfer to and from the haem iron of cytochrome c. Histidine 86-95 cytochrome c, somatic Equus caballus 176-188