>TIGR01220 Pmev_kin_Gr_pos phosphomevalonate kinase; InterPro: IPR005917 Protein kinases are a group of enzymes that possess a catalytic subunit which transfers the gamma phosphate from nucleotide triphosphates (often ATP) to one or more amino acid residues in a protein substrate side chain, resulting in a conformational change affecting protein function. The enzymes fall into two broad classes, characterised with respect to substrate specificity: serine/threonine specific and tyrosine specific . Protein kinase function has been evolutionarily conserved from Escherichia coli to Homo sapiens. Protein kinases play a role in a mulititude of cellular processes, including division, proliferation, apoptosis, and differentiation . Phosphorylation usually results in a functional change of the target protein by changing enzyme activity, cellular location, or association with other proteins. The catalytic subunits of protein kinases are highly conserved, and several structures have been solved , leading to large screens to develop kinase-specific inhibitors for the treatments of a number of diseases . Phosphomevalonate kinase (2.7.4.2 from EC)catalyzes the phosphorylation of 5-phosphomevalonate into 5-diphosphomevalonate, an essential step in isoprenoid biosynthesis via the mevalonate pathway. This pathway starts with three molecules of acetyl-CoA, which, in a series of six different enzyme reactions, are converted to isopentanyl pyrophosphate (IPP), the basic C5 isoprene unit and a common intermediate for a number of pathways including isoprenoid and cholesterol biosynthesis. There are two unrelated types of PMK. The first type belongs to the GHMP kinase and includes a eukaryotic group which is typified by Saccharomyces cerevisiae ERG8 and a bacterial group typified by by Streptococcus pneumoniae PMK (MvaK2) . The second type includes animal PMKs, typified by human PMK . PMKs of the first type are present in eubacteria, fungi, and plants, while the second type is found only in animals, indicative of a nonorthologous gene displacement early in animal evolution . PMKs of the GHMP kinase type are closely related to mevalonate kinases. The two types of PMK have different consensus ATP-binding motifs: a protein kinase motif in the ERG8 orthologs versus a P-loop or Walker A motif in the animal orthologs. The fact that ERG8 orthologs are found in pathogenic eubacteria and fungi but not in humans makes them attractive targets for the development of antibacterial and/or antifungal drugs . This group of enzymes belongs to the GHMP kinase domain superfamily. GHMP kinases are a unique class of ATP-dependent enzymes (the abbreviation of which refers to the original members: galactokinase, homoserine kinase, mevalonate kinase, and phosphomevalonate kinase) . Enzymes belonging to this superfamily contain three well-conserved motifs, the second of which has the typical sequence Pro-X-X-X-Gly-Leu-X-Ser-Ser-Ala and is involved in ATP binding . The phosphate binding loop in GHMP kinases is distinct from the classical P-loops found in many ATP/GTP binding proteins. The bound ADP molecule adopts a rare syn conformation and is in the opposite orientation from those bound to the P-loop-containing proteins . GHMP kinases display a distinctly bilobal appearance with their N-terminal subdomains dominated by a mixed beta-sheet flanked on one side by alpha-helices and their C-terminal subdomains containing a four stranded anti-parallel beta-sheet , , , ..

Probab=98.42 E-value=5e-05 Score=55.53 Aligned_cols=274 Identities=15% Similarity=0.153 Sum_probs=167.2 Q ss_pred CCCCCCCEEEEECCCCEEEEEEECC---CC-------------------CCEEEECCEECCC-CCHHHHHHHHHHHHHHH Q ss_conf 7578984346812781079999717---88-------------------8579987872566-52068999999742167 Q gi|254781016|r 46 NLPLNNSLSLSLGHLGTITHITVID---SD-------------------ADCIILNGQKISS-QSSFFKKTTQFCDLFRQ 102 (355) Q Consensus 46 ~lP~n~SiS~TL~~~~T~T~v~~~~---~~-------------------~d~~~lnG~~~~~-~~~~~~ri~~~l~~~r~ 102 (355) T Consensus 18 vePG~pailvAVDrfvtvt-ve~~~adt~~~~~i~S~~l~~~pv~w~r~~g~lv~~d~~dGqqA~s~l~yVv~AIe~~e~ 96 (367) T TIGR01220 18 VEPGYPAILVAVDRFVTVT-VEDADADTDAADVIQSSDLSSEPVRWRRRDGKLVVDDADDGQQAESALKYVVAAIEVVEK 96 (367) T ss_pred ECCCCCEEEEEECCEEEEE-EECCCCCCCCCCCEEECCCCCCCCEEEEECCEEEEECCCCCHHHHHHHHHHHHHHHHHHH T ss_conf 3777955999975658999-863567543445145211477760346426857872377435566457876678999999 Q ss_pred HC--------CCEEEEEEECCC--CCCCHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHH--------CCC-CCHHH Q ss_conf 61--------943999985023--321101232247999999999981889998899988652--------135-30343 Q gi|254781016|r 103 FS--------KVYFLIETSNNI--PTKAGLASSASGFAALTLALFRIYSIPEKSESLSRVARL--------GSG-SACRS 163 (355) Q Consensus 103 ~~--------~~~~~I~S~N~f--PtaaGLASSASgfAALa~Al~~~~~~~~~~~~lS~lARl--------GSG-SA~RS 163 (355) T Consensus 97 ya~e~n~kl~~~hL~v~S~Ld~~~GrKyGLGSSgAVtV~tVkAln~Fydl~Lsn~eifkLa~la~~~lq~~gScGDiAaS 176 (367) T TIGR01220 97 YARERNKKLKAYHLEVSSELDEADGRKYGLGSSGAVTVATVKALNAFYDLELSNEEIFKLAVLATLELQSKGSCGDIAAS 176 (367) T ss_pred HHHHCCCCCCEEEEEEEEEEECCCCCEECCCCHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHCCCCCCCCCHHHH T ss_conf 97650971102676687641057884504662078999999999986287757567889989864220689975411110 Q ss_pred HCCCCHHCCCCCCCCCC-CEE-----EEECCCCCCCCEEEEEEECCC---------CCCCCC---CHHHHHHHHHCHHHH Q ss_conf 10562002578987654-413-----101566686421589997287---------667521---056798876185689 Q gi|254781016|r 164 FYRGFCEWICGTDQNGM-DSF-----AVPFNNQWPDLRIGLLKIIDR---------EKKIGS---REAMEITRHHSPFFT 225 (355) Q Consensus 164 i~GG~v~W~~g~~~~~s-ds~-----a~~~~~~~~dl~~~i~iv~~~---------~K~vsS---t~gm~~~v~tSp~y~ 225 (355) T Consensus 177 ~ygGWiAyst-fDhdwV~q~~~~~~v~~~L~~~WPgl~i~pL~aPk~l~lliGWTGsPASt~~LVs~vhr~k~~~~a~y~ 255 (367) T TIGR01220 177 VYGGWIAYST-FDHDWVKQKVEEVSVDEVLKKDWPGLSIEPLKAPKNLELLIGWTGSPASTADLVSEVHRRKEEKSAAYE 255 (367) T ss_pred HHHHHHHHCC-CCHHHHHHHHHHHCHHHHHHCCCCCCEEECCCCCCCCEEEEEECCCCCCCHHHHHHHHHCCCCCCHHHH T ss_conf 1110333057-666888755413035888614778850220679986779886317887776788888740467623688 Q ss_pred HHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHCCCCCEEEECHHHHHHHHHHHHHHHCCCEEEEEECCCCE Q ss_conf 99973055099999999809999999999999998999870389956865788999999999974289619999777981 Q gi|254781016|r 226 QWTQQISTDLAHIKQAIIDQDFIKLGEVAEKNALKMHATMIAASPPLLYWQKETIQGMERVWDARQQSIPIYFTLDAGPN 305 (355) Q Consensus 226 ~r~~~~~~~~~~~~~ai~~~Df~~l~~i~e~dal~mHa~~~~s~P~~~Y~~~~t~~ii~~v~~~R~~g~~v~fT~DAGPN 305 (355) T Consensus 256 rFl~~s~~CVe~~i~af~tg~i~~~~k~Ir~nR~~la--~ld~e~gv~IeTe~Lk~LCD~a----E~yggAAK~SGAGGG 329 (367) T TIGR01220 256 RFLEKSRDCVESLITAFETGDIKSVQKEIRKNRQLLA--RLDDEVGVDIETEKLKALCDLA----EAYGGAAKSSGAGGG 329 (367) T ss_pred HHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHH--HHCCCCCCEEECHHHHHHHHHH----HHCCCCCCCCCCCCC T ss_conf 8887678999999864315773257888899999998--5101142023444366554264----311122377888874 Q ss_pred ---EEEEECHH--HHHHHHHHHHHCCC Q ss_conf ---79995589--89999999763210 Q gi|254781016|r 306 ---LKLLFTHK--IEETIKQFFPEITI 327 (355) Q Consensus 306 ---v~il~~~~--~~~~i~~~l~~i~~ 327 (355) T Consensus 330 DCGIai~d~~~srdi~~~~~~We~~Gi 356 (367) T TIGR01220 330 DCGIAILDAKASRDILRVRQEWEKDGI 356 (367) T ss_pred CHHHHEEHHHHHCCCHHHHHHHHHCCC T ss_conf 411212200231360578888886688

HHsearch alignment for GI: 254781016 and conserved domain: TIGR01220