We are deeply saddened by the passing of Amos Bairoch (1957–2025), the creator of PROSITE. We wish to dedicate our latest paper, published shortly before his death, to him. He will always be a source of inspiration to us.
Our deepest condolences go out to his family and friends, and to all those who had the privilege of working with him. Rest in peace, Amos. Your work will live on long after you are gone.
Our deepest condolences go out to his family and friends, and to all those who had the privilege of working with him. Rest in peace, Amos. Your work will live on long after you are gone.
PROSITE documentation PDOC00464Cytochrome b559 subunits heme-binding site signature
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PURL: https://purl.expasy.org/prosite/documentation/PDOC00464
Description
Cytochrome b559 [1] is an essential component of photosystem II complex from oxygenic photosynthetic organisms. It is an integral thylakoid membrane protein composed of two subunits, α (gene psbE) and β (gene psbF), each of which contains a histidine residue located in a transmembrane region. The two histidines coordinate the heme iron of cytochrome b559.
The region around the heme-binding residue of both subunits is very similar and can be used as a signature pattern.
Last update:December 2004 / Pattern and text revised.
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Technical section
PROSITE method (with tools and information) covered by this documentation:
Reference
| 1 | Authors | Pakrasi H.B. De Ciechi P. Whitmarsh J. |
| Title | Site directed mutagenesis of the heme axial ligands of cytochrome b559 affects the stability of the photosystem II complex. | |
| Source | EMBO J. 10:1619-1627(1991). | |
| PubMed ID | 1904816 |
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