>TIGR01818 ntrC nitrogen regulation protein NR(I); InterPro: IPR010114 This entry represents Nitrogen regulatory protein C (NtrC), which is a bacterial enhancer-binding protein that activates the transcription of genes encoding enzymes required for nitrogen metabolism. It is phosphorylated by NtrB and interacts with sigma-54. One of the best studied examples is its activation of the gene glnA, which encodes the enzyme glutamine synthetase.. NtrC is composed of three domains , . The 124 residue N-terminal domain is homologous to receiver domains of other response regulator proteins in two-component signal transduction systems , . The 240 residue central domain of NtrC is homologous to a domain found in all activators of the sigma-54 RNA polymerase holoenzyme , . The C-terminal domain has been indicated to contain the determinants necessary for both DNA-binding and dimerization of full-length NtrC.; GO: 0000156 two-component response regulator activity, 0003677 DNA binding, 0005524 ATP binding, 0000160 two-component signal transduction system (phosphorelay), 0009399 nitrogen fixation, 0050906 detection of stimulus during sensory perception.

Probab=98.74 E-value=1.1e-08 Score=71.64 Aligned_cols=136 Identities=24% Similarity=0.319 Sum_probs=98.3 Q ss_pred CCCCCCHHHHHHHHHHHHCCCCCHHHHHHHHCEEECCCCCCCCCCCCCCCEEECCCCCCCHHH-----CC-------CCC Q ss_conf 777860599999998874889897885323000000278887565311120203775210011-----02-------343 Q gi|254781026|r 2 IGPPGARKSMLASCLPSILLPLSLEESLEVSMIYSISGHSSHEYSFIQNRPFRSPHHSVTIAA-----LI-------GGG 69 (186) Q Consensus 2 ~GpPG~GKS~lar~l~~iLP~l~~~e~le~~~i~s~~g~~~~~~~~~~~~p~~~~~~~~~~~~-----l~-------gg~ 69 (186) T Consensus 164 ~GESGTGKELVA~ALH~~s~R--------------------------~~~PFiAlNmAAIP~~L~ESELFGHEkGAFTGA 217 (471) T TIGR01818 164 NGESGTGKELVARALHRHSPR--------------------------ARGPFIALNMAAIPKDLIESELFGHEKGAFTGA 217 (471) T ss_pred ECCCCCCHHHHHHHHHCCCCC--------------------------CCCCCEEECHHHCCHHHHHHHHCCCCCCCCCCC T ss_conf 557577589999984013755--------------------------577732730232224665543214565300010 Q ss_pred CCCCHHHHHHCCCCEEEEECHHHCCHHHHHHHHHHHHCCCEEEHHCCEEEEECCCEEEEEECCCCCCCCCCCCCCCCCCC Q ss_conf 45682799827998899803878598899999999971952301003078984701567522746588788988764389 Q gi|254781026|r 70 LQVLPGEDSLAHNGVLFLDEIPEFSPQTLNALRQPLETGECIIARANRKISYPSRIQLIAAMNPCRCGMSNKDENVCIRG 149 (186) Q Consensus 70 ~~~~pG~i~lAh~GVLflDE~~e~~~~~l~~L~~~le~g~v~i~R~g~~~~~Pa~f~Lvaa~NPcpcG~~~~~~~~c~c~ 149 (186) T Consensus 218 ~~~~~GRFEQA~GGTLFLDEIGDMPl~~QTRLLRVL~~G~f--~rVGG~~p~k~DVRi~AAThq----~L---------- 281 (471) T TIGR01818 218 NTRRQGRFEQADGGTLFLDEIGDMPLDLQTRLLRVLADGEF--YRVGGRTPIKVDVRIVAATHQ----DL---------- 281 (471) T ss_pred CCCCCCCEEECCCCCEECCCCCCCCHHHHHHHHHHHCCCCE--EEECCCEEEEEEEEEEECCCH----HH---------- T ss_conf 25567772534888210102167877687779886407865--772682024550466733665----68---------- Q ss_pred HHHHHHHHHHCCHHHHHCCC-EEEECCCCCHHH Q ss_conf 99999998512243210042-599838856688 Q gi|254781026|r 150 PRCATEYQARISGPLMDRID-IRIAVPSRTHIR 181 (186) Q Consensus 150 ~~~~~~Y~~rls~plldR~D-l~v~~~~~~~~~ 181 (186) T Consensus 282 e~lv--~~G~FReDLfhRL~Vi~i~lPpLrER~ 312 (471) T TIGR01818 282 EALV--RQGKFREDLFHRLNVIRIHLPPLRERR 312 (471) T ss_pred HHHH--HCCCCHHHHHHHHCEEEECCCCCCCHH T ss_conf 9996--558813555551233462168721226

HHsearch alignment for GI: 254781026 and conserved domain: TIGR01818