>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=100.00 E-value=0 Score=332.87 Aligned_cols=305 Identities=28% Similarity=0.349 Sum_probs=248.6 Q ss_pred EEEECCEEEEEECCCEEEC-CCEEEEEEECCEEEEEEEECC---CCEEEEEECCC--------CCCCCCCHHHC------ Q ss_conf 9997170499974353308-942898776772899999868---98499995364--------44465661201------ Q gi|254781017|r 8 ICVSAPGSLVLMGEHGVLH-GHAALVFAINKRVILYLTLRK---DRLINIDSSLG--------QYCGSLDLAMF------ 69 (324) Q Consensus 8 i~~~aPGKv~L~GEh~v~~-G~~ai~~aI~~~~~~~~~~~~---~~~i~i~~~~~--------~~~~~~~~~~~------ 69 (324) T Consensus 1 I~v~aPGKLfvAGEYAVvePG~pailvAVDrfvtvtve~~~adt~~~~~i~S~~l~~~pv~w~r~~g~lv~~d~~dGqqA 80 (367) T TIGR01220 1 IEVKAPGKLFVAGEYAVVEPGYPAILVAVDRFVTVTVEDADADTDAADVIQSSDLSSEPVRWRRRDGKLVVDDADDGQQA 80 (367) T ss_pred CEEECCCCEEEEEEEEEECCCCCEEEEEECCEEEEEEECCCCCCCCCCCEEECCCCCCCCEEEEECCEEEEECCCCCHHH T ss_conf 90208963066201344377795599997565899986356754344514521147776034642685787237743556 Q ss_pred CCHHHHHHHHHHHHCC--------CCCEEEEEECCCC----CCCCCCCCCHHHHHHHHHHHHHHCCCCCCCHHHHHHHHH Q ss_conf 5089999999997187--------7873899982687----535488740245665567776404566660145578888 Q gi|254781017|r 70 HPSFSFIIMAINHIKP--------SCGFDLKVISQLD----SQLGLGSSAAITVAITAALLTLQYHKEPSPDEILTTAHA 137 (324) Q Consensus 70 ~~~~~~i~~~l~~~~~--------~~g~~i~i~s~iP----~g~GLGSSaa~~va~~~al~~~~~~~~~~~~~i~~lA~~ 137 (324) T Consensus 81 ~s~l~yVv~AIe~~e~ya~e~n~kl~~~hL~v~S~Ld~~~GrKyGLGSSgAVtV~tVkAln~F-ydl~Lsn~eifkLa~l 159 (367) T TIGR01220 81 ESALKYVVAAIEVVEKYARERNKKLKAYHLEVSSELDEADGRKYGLGSSGAVTVATVKALNAF-YDLELSNEEIFKLAVL 159 (367) T ss_pred HHHHHHHHHHHHHHHHHHHHCCCCCCEEEEEEEEEEECCCCCEECCCCHHHHHHHHHHHHHHH-CCCCCCHHHHHHHHHH T ss_conf 645787667899999997650971102676687641057884504662078999999999986-2877575678899898 Q ss_pred HHHHHCCCCCCHHHHHHHCCCEEEEE-----------------------ECCCEEEEEECCC--CCCEEECCCCCCHHHH Q ss_conf 77652146887544776629858998-----------------------5275156730477--7526765841798999 Q gi|254781017|r 138 IVLKVQGISSGIDLAASIHGGLICYQ-----------------------MPKYSIEKIDFIF--PIHLIYSGYKTPTAQV 192 (324) Q Consensus 138 ~E~~~~g~~sG~D~~a~~~Gg~i~~~-----------------------~~~~~~~~~~~~~--~l~l~~tg~~~~T~~~ 192 (324) T Consensus 160 a~~~lq~~gScGDiAaS~ygGWiAystfDhdwV~q~~~~~~v~~~L~~~WPgl~i~pL~aPk~l~lliGWTGsPASt~~L 239 (367) T TIGR01220 160 ATLELQSKGSCGDIAASVYGGWIAYSTFDHDWVKQKVEEVSVDEVLKKDWPGLSIEPLKAPKNLELLIGWTGSPASTADL 239 (367) T ss_pred HHHHCCCCCCCCCHHHHHHHHHHHHCCCCHHHHHHHHHHHCHHHHHHCCCCCCEEECCCCCCCCEEEEEECCCCCCCHHH T ss_conf 64220689975411110111033305766688875541303588861477885022067998677988631788777678 Q ss_pred HHHHHHHHHHCCCHHHHHHHHHHHHCCCCHHHHHHHCCCCHHHHHHHHHHHHHHHHHH------CCCCHHHHHHHHHHHH Q ss_conf 9888998860823489999999840332078898730486445689999989999861------6787799999999997 Q gi|254781017|r 193 LKKISYIEIEYPEINEINQKIYALMGKLSQISCQALRNKNLKVLAQAMNRQQGLLETL------GVSDSKLSEIVWKLRE 266 (324) Q Consensus 193 v~~v~~~~~~~~~~~~~~~~~~~~~~~i~~~~~~al~~~d~~~l~~lm~~~~~~L~~l------gvs~~~l~~li~~~~~ 266 (324) T Consensus 240 Vs~vhr~k~~~~---a~y~rFl~~s~~CVe~~i~af~tg~i~~~~k~Ir~nR~~la~ld~e~gv~IeTe~Lk~LCD~aE~ 316 (367) T TIGR01220 240 VSEVHRRKEEKS---AAYERFLEKSRDCVESLITAFETGDIKSVQKEIRKNRQLLARLDDEVGVDIETEKLKALCDLAEA 316 (367) T ss_pred HHHHHHCCCCCC---HHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCCCCCCEEECHHHHHHHHHHHH T ss_conf 888874046762---36888887678999999864315773257888899999998510114202344436655426431 Q ss_pred CCCCEEEECCCCCCCCEEEEEECCCCCHHHHHHHHHHHHHCCCEEEEEECCCC Q ss_conf 19945997268997548999846653268999999999977978999414545 Q gi|254781017|r 267 QPHIMASKISGSGLGDCVIALGKGDLNSLPYQSVNCHMHAKGIDIVPITPSHS 319 (324) Q Consensus 267 ~~g~~~aklsGAG~GG~~i~l~~~~~~~~~~~~~~~~~~~~g~~~~~~~~~~~ 319 (324) T Consensus 317 ygg--AAK~SGAGGGDCGIai~d~~~-srdi~~~~~~We~~Gi~PLpl~~y~~ 366 (367) T TIGR01220 317 YGG--AAKSSGAGGGDCGIAILDAKA-SRDILRVRQEWEKDGIKPLPLKVYLE 366 (367) T ss_pred CCC--CCCCCCCCCCCHHHHEEHHHH-HCCCHHHHHHHHHCCCCCCCCEECCC T ss_conf 112--237788887441121220023-13605788888866887564300268

HHsearch alignment for GI: 254781017 and conserved domain: TIGR01220