1gxp

<table><tr><td colspan='2'>[[1gxp]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. The October 2015 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Two-component Systems'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2015_10 10.2210/rcsb_pdb/mom_2015_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GXP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GXP FirstGlance]. <br>

</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1b00|1b00]], [[1gxq|1gxq]], [[1qqi|1qqi]]</div></td></tr>

[[https://www.uniprot.org/uniprot/PHOB_ECOLI PHOB_ECOLI]] This protein is a positive regulator for the phosphate regulon. Transcription of this operon is positively regulated by PhoB and PhoR when phosphate is limited.

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

PhoB is a signal transduction response regulator that activates nearly 40 genes in phosphate depletion conditions in E. coli and closely related bacteria. The structure of the PhoB effector domain in complex with its target DNA sequence, or pho box, reveals a novel tandem arrangement in which several monomers bind head to tail to successive 11-base pair direct-repeat sequences, coating one face of a smoothly bent double helix. The protein has a winged helix fold in which the DNA recognition elements comprise helix alpha 3, penetrating the major groove, and a beta hairpin wing interacting with a compressed minor groove via Arg219, tightly sandwiched between the DNA sugar backbones. The transactivation loops protrude laterally in an appropriate orientation to interact with the RNA polymerase sigma(70) subunit, which triggers transcription initiation.

Tandem DNA recognition by PhoB, a two-component signal transduction transcriptional activator.,Blanco AG, Sola M, Gomis-Ruth FX, Coll M Structure. 2002 May;10(5):701-13. PMID:12015152<ref>PMID:12015152</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

</div>

<div class="pdbe-citations 1gxp" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Bacillus coli migula 1895]]

[[Category: Blanco, A G]]

[[Category: Coll, M]]

[[Category: Gomis-Ruth, F X]]

[[Category: Sola, M]]

[[Category: Two- component signal transduction]]