>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=99.85 E-value=1.9e-21 Score=155.59 Aligned_cols=179 Identities=16% Similarity=0.201 Sum_probs=128.0 Q ss_pred EEEECCCHHHHHHHHHHHHHCCCEEEEEECHHHHHHHHHHC-CCCEEEEEEECCCCCCHHHHHHHHHHC-CCCCCEECCC Q ss_conf 68970989999999999997898899982858999999828-996799990078966217999863101-3321000024 Q gi|254780526|r 2 FVLIDDRALVKDGYIALFGDDGVSLEGFNSLEFEEWLQSSA-REDVSAIEAFLIGKGEKVLELPRIIRA-HSQVPLIGIS 79 (223) Q Consensus 2 ILiVeDd~~~~~~l~~~L~~~g~~v~~~~~~~~~~~l~~~~-~~d~~iid~~l~~~~~~g~~l~~~lr~-~~~~pII~lt 79 (223) T Consensus 1 vwvvDDD~siR~VL~~AL~~~g~~v~~f~~A~~~l~~l~~~p~pD~~~tD~--rMPg~~Gl~LL~~ik~~~P~LPVIvM~ 78 (471) T TIGR01818 1 VWVVDDDRSIRWVLEKALSRAGIEVRTFDNAASVLRALAREPQPDLLITDV--RMPGEDGLDLLKQIKKRHPKLPVIVMT 78 (471) T ss_pred CEEEECCCHHHHHHHHHHHHCCCEEEEHHHHHHHHHHHHCCCCCCEEEEEC--CCCCHHHHHHHHHHHHCCCCCCEEEEC T ss_conf 957764718999999999666954531131899999984479998798612--268824899999998508999779871 Q ss_pred CCCCCCCCCCCCCCCCEEEEECCCCCCCCCCCCCCCCCCCCCC-C----CCCCCCCCC-----------------CCCCC Q ss_conf 4321000011122201000102333332100000111222222-2----112222222-----------------22222 Q gi|254780526|r 80 DYPSLQTTLDFFDSGVDDVVNKPIHHREILARVAAIYRRLKVS-N----NRAETGPIR-----------------VFSDG 137 (223) Q Consensus 80 ~~~~~~~~i~~l~~GAddyl~KP~~~~eL~ari~a~lRr~~~~-~----~~~~~~~~~-----------------~~~~~ 137 (223) T Consensus 79 A~~dl~~Av~a~~~GAfEYLpKPFD~de~v~lv~RA~~~~~~~~~~~~~~~~~~~~~~liG~aPAMQevfR~igRL~~~~ 158 (471) T TIGR01818 79 AHSDLDSAVAAYQRGAFEYLPKPFDLDEAVTLVERALAHAQEQVALELDAGEAEDSAELIGEAPAMQEVFRAIGRLSRSD 158 (471) T ss_pred CCHHHHHHHHHHHCCCHHCCCCCCCHHHHHHHHHHHHCCCHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHCCCC T ss_conf 30678999999735830217698766889999998610300122200012101256212368851689999999751696 Q ss_pred CCCCCCCCCCCCCCCCHHHHHHHHCC---C--------CCCCHHHHHHHHHCCCCCCCC Q ss_conf 22222223321242101234432112---8--------834008999986528765777 Q gi|254780526|r 138 RDPEVQGEVFPLPRRERRILEYLMAN---R--------GKRVAKTQIFSAIYGLFDEAV 185 (223) Q Consensus 138 ~~~~~~g~~i~LT~~E~~lL~~L~~~---~--------g~~vsr~~l~~~iwg~~~~~~ 185 (223) T Consensus 159 l~VlI~GESG--TGKEL-VA~ALH~~s~R~~~PFiAlNmAAIP~~L~ESELFGHEkGAF 214 (471) T TIGR01818 159 LSVLINGESG--TGKEL-VARALHRHSPRARGPFIALNMAAIPKDLIESELFGHEKGAF 214 (471) T ss_pred CEEEEECCCC--CCHHH-HHHHHHCCCCCCCCCCEEECHHHCCHHHHHHHHCCCCCCCC T ss_conf 0588855757--75899-99984013755577732730232224665543214565300

HHsearch alignment for GI: 254780526 and conserved domain: TIGR01818