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Bacterial ferritin contains 24 haem groups
Author(s) -
Kadir Fahmi H.A.,
Moore Geoffrey R.
Publication year - 1990
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(90)80391-u
Subject(s) - ferritin , chemistry , biochemistry , microbiology and biotechnology , biology
Pseudomonas aeruginosa bacterioferritin, also known as cytochrome b 1 or cytochrome b 557 , has been isolated with 9 haems per 24 subunits. Various forms of the protein have been prepared including the completely haem‐free protein and the fully haem‐loaded protein with 24 haems per 24 subunits. The presence of the core does not significantly affect haem addition or removal. The absorbance ratio of the non‐haem‐iron‐loaded protein, 278 nm:417 nm (oxidised), can be used to estimate the haem loading.