>TIGR00670 asp_carb_tr aspartate carbamoyltransferase; InterPro: IPR002082 Aspartate carbamoyltransferase (ATCase) catalyses the formation of carbamoyl-aspartate in the pyrimidine biosynthesis pathway, by the association of aspartate and carbamoyl-phosphate. This is the commitment step in the Escherichia coli pathway and is regulated by feedback inhibition by CTP, the final product of the pathway. The structural organisation of the ATCase protein varies considerably between different organisms. In bacteria such as E. coli, Salmonella typhimurium and Serratia marcescens, the ATCase is a dodecamer of 2 catalytic (c) trimers and 3 regulatory (r) dimers. The catalytic domains are coded for by the pyrB gene, and the regulatory domains by pyrI. In Gram-positive bacteria such as Bacillus subtilis, ATCase exists as a trimer of catalytic subunits, but unlike in E. coli, it neither contains nor binds to regulatory subunits. In eukaryotes, ATCase is found as a single domain in a multifunctional enzyme that contains activity for glutamine amidotransferase, carbamoylphosphate synthetase, dihydroorotase, and aspartate carbamoyltransferase. ; GO: 0004070 aspartate carbamoyltransferase activity, 0006207 'de novo' pyrimidine base biosynthetic process.

Probab=92.04 E-value=0.93 Score=24.25 Aligned_cols=114 Identities=18% Similarity=0.335 Sum_probs=71.0 Q ss_pred EEE--ECCCCCCCCHHHHHH--HHHHHHH-------CCCCCCEEEECCHHHCCCCHHHHHHHHHHHHHHCCCCEEEEECC Q ss_conf 310--002565321012577--7874111-------02687138851235417105899999999998649989999880 Q gi|254781101|r 341 LID--ESYNANPASMKAAIS--VLSQISP-------HGEGRRIAVLGDMCEMGELSQSFHIDLAEVLSLYNISHVWLSGF 409 (472) Q Consensus 341 iID--DsYNAnP~S~~aal~--~l~~~~~-------~~~~r~i~VlG~m~ELG~~~~~~h~~i~~~~~~~~~d~v~~~G~ 409 (472) T Consensus 137 viNAGDG~~qHPT--Q~LLDLyTi~~~fGPDnP~l~~~~Gl~iA~vGDlk----ygRtvhS~~-~~L~~f~~~~v~l~sP 209 (336) T TIGR00670 137 VINAGDGSGQHPT--QTLLDLYTIYEEFGPDNPALERLDGLKIALVGDLK----YGRTVHSLI-KALALFGNAEVYLISP 209 (336) T ss_pred EEECCCCCCCCCC--HHHHHHHHHHHHHCCCCCCHHHCCCCEEEEEEECC----CCHHHHHHH-HHHHHHCCCEEEEECC T ss_conf 6636878787975--34788999998718886303222885799984312----024766788-9986518956998677 Q ss_pred CH----HHHHHHCC-CCCCEEEECCHHHHHHHHHHHCCCCCEE---EEECCCHHHHHHHHHHHHHHCCCC Q ss_conf 38----98998511-3797999789899999999844789899---997713254899999999850577 Q gi|254781101|r 410 HV----LALKDALP-RSIHVHYSETMDGLFLFIQSSLVDGDVV---VVKSSNSCGFYRLINLLLEEFPAI 471 (472) Q Consensus 410 ~~----~~~~~~~~-~~~~~~~~~~~e~a~~~l~~~~~~gdiV---LiKGSr~~~le~iv~~L~~~~~~~ 471 (472) T Consensus 210 ~~LrmP~~~~e~~~~~G~~~~~~~~l~e~-------~~~~DVlkiWY~t--R-iQkER~~~~d~~ey~~~ 269 (336) T TIGR00670 210 EELRMPKEILEDLKAKGVKVRETESLEEV-------IDEADVLKIWYVT--R-IQKERFPEDDPEEYEKV 269 (336) T ss_pred HHHHCHHHHHHHHHHCCCEEEEEEEHHHH-------HCCCCEEEEEEEE--C-CCCCCCCCCCHHHHHHH T ss_conf 24306178899985289628995224344-------2157847886420--0-11123788788999841

HHsearch alignment for GI: 254781101 and conserved domain: TIGR00670