Protein
Serine/threonine-protein kinase PknK
Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Function
Key microbial factor involved in regulation of early and late events in tuberculosis infection, and in host-pathogen interactions. Modulates host immunity during early infection. Slows mycobacterial growth during chronic infection in host and during a variety of stress conditions in vitro. Regulates the expression of a large subset of tRNA genes as a means to facilitate adaptation to changing growth environments. In vitro, directs the inhibition of transcription and translation processes in a phosphorylation-dependent manner. Phosphorylates the transcriptional regulator VirS, thereby increasing the affinity of VirS for the mycobacterial monooxygenase (mymA) promoter. In vitro, can also phosphorylate the mycobacterial monooxygenase operon products Rv3083 (MymA), Rv3084 (LipR), Rv3085 and Rv3088.
Similarity
Belongs to the protein kinase superfamily. Ser/Thr protein kinase family.
Sequence
MTDVDPHATRRDLVPNIPAELLEAGFDNVEEIGRGGFGVVYRCVQPSLDRAVAVKVLSTDLDRDNLERFLREQRAMGRLSGHPHIVTVLQVGVLAGGRPFIVMPYHAKNSLETLIRRHGPLDWRETLSIGVKLAGALEAAHRVGTLHRDVKPGNILLTDYGEPQLTDFGIARIAGGFETATGVIAGSPAFTAPEVLEGASPTPASDVYSLGATLFCALTGHAAYERRSGERVIAQFLRITSQPIPDLRKQGLPADVAAAIERAMARHPADRPATAADVGEELRDVQRRNGVSVDEMPLPVELGVERRRSPEAHAAHRHTGGGTPTVPTPPTPATKYRPSVPTGSLVTRSRLTDILRAGGRRRLILIHAPSGFGKSTLAAQWREELSRDGAAVAWLTIDNDDNNEVWFLSHLLESIRRVRPTLAESLGHVLEEHGDDAGRYVLTSLIDEIHENDDRIAVVIDDWHRVSDSRTQAALGFLLDNGCHHLQLIVTSWSRAGLPVGRLRIGDELAEIDSAALRFDTDEAAALLNDAGGLRLPRADVQALTTSTDGWAAALRLAALSLRGGGDATQLLRGLSGASDVIHEFLSENVLDTLEPELREFLLVASVTERTCGGLASALAGITNGRAMLEEAEHRGLFLQRTEDDPNWFRFHQMFADFLHRRLERGGSHRVAELHRRASAWFAENGYLHEAVDHALAAGDPARAVDLVEQDETNLPEQSKMTTLLAIVQKLPTSMVVSRARLQLAIAWANILLQRPAPATGALNRFETALGRAELPEATQADLRAEADVLRAVAEVFADRVERVDDLLAEAMSRPDTLPPRVPGTAGNTAALAAICRFEFAEVYPLLDWAAPYQEMMGPFGTVYAQCLRGMAARNRLDIVAALQNFRTAFEVGTAVGAHSHAARLAGSLLAELLYETGDLAGAGRLMDESYLLGSEGGAVDYLAARYVIGARVKAAQGDHEGAADRLSTGGDTAVQLGLPRLAARINNERIRLGIALPAAVAADLLAPRTIPRDNGIATMTAELDEDSAVRLLSAGDSADRDQACQRAGALAAAIDGTRRPLAALQAQILHIETLAATGRESDARNELAPVATKCAELGLSRLLVDAGLA