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HO3

Gene
HO3
Protein
Heme oxygenase 3, chloroplastic
Organism
Arabidopsis thaliana
Length
285 amino acids
Function
Catalyzes the opening of the heme ring to form the open-chain tetrapyrrole biliverdin IX with the release of iron and carbon monoxide (CO). Produces specifically the biliverdin IX-alpha isomer. Plays a minor role in phytochrome assembly and photomorphogenesis.
Similarity
Belongs to the heme oxygenase family.
Mass
32.434 kDa
Sequence
MATTRLNPSCHFPASTRLSCESYLGLRTTGRISYARTLTAPRGYLAVKANGGQASVVTAAAITEKQQKKYPGESKGFVEEMRFVAMRLHTKDQAREGEKESRSPEEGPVAKWEPTVEGYLHFLVDSKLVYDTLEGIIDGSNFPTYAGFKNTGLERAESLRKDLEWFKEQGYEIPEPMAPGKTYSEYLKDLAENDPQAFICHFYNIYFAHSAGGQMIGTKVSKKILDNKELEFYKWDGQLSQLLQNVRQKLNKVAEWWTREEKSHCLEETEKSFKFSGEILRLILS