Cytochrome b5-like Heme/Steroid binding domain
SMART accession number:SM01117
Description: This family includes heme binding domains from a diverse range of proteins. This family also includes proteins that bind to steroids. The family includes progesterone receptors such as O00264 ((PUBMED:9705155),(PUBMED:8774719)). Many members of this subfamily are membrane anchored by an N-terminal transmembrane alpha helix. This family also includes a domain in some chitin synthases. There is no known ligand for this domain in the chitin synthases.
Family alignment:
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There are 8355 Cyt-b5 domains in 7934 proteins in SMART's nrdb database.

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