>cd01568 QPRTase_NadC Quinolinate phosphoribosyl transferase (QAPRTase or QPRTase), also called nicotinate-nucleotide pyrophosphorylase, is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid (QA) with 5-phosphoribosyl-1-pyrophosphate (PRPP) in the presence of Mg2+ to produce nicotinic acid mononucleotide (NAMN), pyrophosphate and carbon dioxide. QPRTase functions as a homodimer with two active sites, each formed by the C-terminal region of one subunit and the N-terminal region of the other.

Probab=97.79 E-value=0.0004 Score=46.66 Aligned_cols=105 Identities=20% Similarity=0.400 Sum_probs=67.9 Q ss_pred CEEEE---ECCCCCCHHHHHHHHHHCCC-EEEEEEECCCCHHHHHHHHH-HCCEEEEEEEECCCCCCCCCCHHHHHHHHH Q ss_conf 07999---70664215899986776498-25998523334478998862-014028998306776533220135778998 Q gi|254780975|r 87 DIITF---HPESSPHIRRSLRTIHAMGK-KTGVAINPETPVAILEDVID-EIDMILIMTVNPGFGGQQLIESTIPKIRQA 161 (224) Q Consensus 87 d~i~~---H~E~~~~~~~~i~~i~~~g~-k~Giai~p~T~~~~i~~~l~-~~D~vliM~V~PG~~Gq~f~~~~l~kI~~l 161 (224) T Consensus 152 d~iLikdNHi~~~g~~~~av~~~r~~~~~~~kIeVEv~t-l~ea~~a~~~g~D~I~LD---------n~~~---~~~~~~ 218 (269) T cd01568 152 DAVLIKDNHIAAAGGITEAVKRARAAAPFEKKIEVEVET-LEEAEEALEAGADIIMLD---------NMSP---EELKEA 218 (269) T ss_pred CEEEEEHHHHHHHCCHHHHHHHHHHHCCCCCEEEEEECC-HHHHHHHHHCCCCEEEEC---------CCCH---HHHHHH T ss_conf 428980506867389999999999868998439999498-999999997699999987---------9899---999999 Q ss_pred HHHHHC-CCCEEEEECCCCHHHHHHHHHCCCCEEEECHHHHCCC Q ss_conf 654313-8652698158998899999967998999742663789 Q gi|254780975|r 162 KALIGK-RSISLEVDGGVTSRNIKSLVQAGADLLVVGSSFFNQK 204 (224) Q Consensus 162 ~~~~~~-~~~~I~vDGGvn~~~i~~l~~~Gad~~V~Gsaif~~~ 204 (224) T Consensus 219 v~~~~~~~~v~ieaSGgI~~~ni~~ya~~GvD~Is~g~lt~s~~ 262 (269) T cd01568 219 VKLLKGLPRVLLEASGGITLENIRAYAETGVDVISTGALTHSAP 262 (269) T ss_pred HHHHCCCCCEEEEEECCCCHHHHHHHHHCCCCEEEECHHHCCCC T ss_conf 99847799859999899999999999975999999084005997

HHsearch alignment for GI: 254780975 and conserved domain: cd01568