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- * Phytochrome chromophore attachment site *
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-
- Phytochrome [1,2] is a plant protein that acts as a regulatory photoreceptor
- and which mediates red-light effects on a wide variety of physiological and
- molecular responses. Phytochrome can undergo a reversible photochemical
- conversion between a biologically inactive red light-absorbing form and the
- active far-red light-absorbing form. Phytochrome is a dimer of identical 124
- Kd subunits, each of which contains a covalently attached linear tetrapyrrole
- chromophore.
-
- The chromophore is attached to a cysteine which is located in a highly
- conserved region that can be used as a signature pattern.
-
- -Consensus pattern: R-[AS]-[PV]-H-x-C-H-x(2)-Y
- [C is the chromophore attachment site]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Expert(s) to contact by email: Partis M.D.
- partis@afrc.ac.uk
-
- -Last update: June 1994 / Pattern and text revised.
-
- [ 1] Silverthorne J., Tobin E.M.
- BioEssays 7:18-23(1987).
- [ 2] Quail P.H.
- Annu. Rev. Genet. 25:389-409(1991).
-