@article{fdi:010069205,
  title = {{A} singular bacteriophytochrome acquired by lateral gene transfer},
  author = {{J}aubert, {M}arianne and {L}avergne, {J}. and {F}ardoux, {J}oel and {H}annibal, {L}aure and {V}uillet, {L}aurie and {A}driano, {J}. {M}. and {B}ouyer, {P}. and {P}ignol, {D}. and {G}iraud, {E}ric and {V}ermeglio, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}acteriophytochromes are phytochrome-like proteins that mediate photosensory responses in various bacteria according to their light environment. {T}he genome of the photosynthetic and plant-symbiotic {B}radyrhizobium sp. strain {ORS}278 revealed the presence of a genomic island acquired by lateral transfer harboring a bacteriophytochrome gene, {B}r{B}ph{P}3.{ORS}278, and genes involved in the synthesis of phycocyanobilin and gas vesicles. {T}he corresponding protein {B}r{B}ph{P}3.{ORS}278 is phylogenetically distant from the other (bacterio)phytochromes described thus far and displays a series of unusual properties. {I}t binds phycocyanobilin as a chromophore, a unique feature for a bacteriophytochrome. {M}oreover, its {C}-terminal region is short and displays no homology with any known functional domain. {I}ts dark-adapted state absorbs maximally around 610 nm, an unusually short wavelength for (bacterio)phytochromes. {T}his form is designated as {P}o for orange-absorbing form. {U}pon illumination, a photo-reversible switch occurs between the {P}o form and a red (670 nm)-absorbing form ({P}r), which rapidly back-reacts in the dark. {B}ecause of this instability, illumination results in a mixture of the {P}o and {P}r states in proportions that depend on the intensity. {T}hese uncommon features suggest that {B}r{B}ph{P}3.{ORS}278 could be fitted to measure light intensity rather than color.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {B}iological {C}hemistry},
  volume = {282},
  numero = {10},
  pages = {7320--7328},
  ISSN = {0021-9258},
  year = {2007},
  DOI = {10.1074/jbc.{M}611173200},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069205},
}