Catalytic activities and coordination environments of the copper ions in the imidazole clusters of histidine-peptides, His(His)nGly and N-acetyl-His(His)nGly (n = 3, 8, and 18).
The copper ions in the imidazole-clusters of histidine-oligopeptide, His(His)nGly (n = 18) and N-acetyl-His(His)nGly(n = 8 and 18), showed the d-d transition bands at 520 nm and 630 nm and oxidase-like activities. Those with the d-d bands at 480 nm and 550 nm did not have the activity.
Ueda
J
J
National Institute of Radiological Sciences, Chiba, Japan.
Hanaki
A
A
Nakajima
T
T
D000595:Amino Acid Sequence; D002942:Circular Dichroism; D003300:Copper / Q000737:chemistry* / Q000378:metabolism; D006639:Histidine / Q000737:chemistry* / Q000378:metabolism; D007093:Imidazoles / Q000737:chemistry*; D008969:Molecular Sequence Data; D009842:Oligopeptides / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D007093:Imidazoles; D009842:Oligopeptides; D006639:Histidine; D003300:Copper; C029899:imidazole