RPSBLAST alignment for GI: 254780234 and conserved domain: cd01999

>gnl|CDD|30186 cd01999, Argininosuccinate_Synthase, Argininosuccinate synthase. The Argininosuccinate synthase is a urea cycle enzyme that catalyzes the penultimate step in arginine biosynthesis: the ATP-dependent ligation of citrulline to aspartate to form argininosuccinate, AMP and pyrophosphate . In humans, a defect in the AS gene causes citrullinemia, a genetic disease characterized by severe vomiting spells and mental retardation. AS is a homotetrameric enzyme of chains of about 400 amino-acid residues. An arginine seems to be important for the enzyme's catalytic mechanism. The sequences of AS from various prokaryotes, archaebacteria and eukaryotes show significant similarity. Length = 385
 Score =  557 bits (1436), Expect = e-159
 Identities = 223/388 (57%), Positives = 288/388 (74%), Gaps = 4/388 (1%)

Query: 8   VVLAYSGGLDTSIILKWLQVEKGLEVIVFIADLGQGEEL-KIASDKARLLGAKEVYVKDL 66
           VVLAYSGGLDTS+ILKWL+ + G EVI   AD+GQ EE  +   +KA  LGAK+  V DL
Sbjct: 1   VVLAYSGGLDTSVILKWLKEKGGYEVIAVTADVGQPEEEIEAIEEKALKLGAKKHVVVDL 60

Query: 67  RREFVRDFVFPMFRANALYEGYYLLGTAIARPLIAKYLVDIANETGADAIAHGSTGKGND 126
           R EFV D++FP  +ANALYEG Y LGTA+ARPLIAK LV++A E GADA+AHG TGKGND
Sbjct: 61  REEFVEDYIFPAIQANALYEGTYPLGTALARPLIAKALVEVAKEEGADAVAHGCTGKGND 120

Query: 127 QVRFELSAYSLNSDIEIIAPWRHWSFKGRQDLIDFAEKHAIPIDKNKRGEAPFSIDTNLL 186
           QVRFEL+ Y+LN D++IIAPWR W F  R++ I++AE+H IP+   K  + P+SID NL 
Sbjct: 121 QVRFELAFYALNPDLKIIAPWRDWEFLSREEEIEYAEEHGIPVPVTK--KKPYSIDENLW 178

Query: 187 HSSSEGRVLEDPSQPAPEYVYKMIVSPEEAPDTPTTIRIDFQRGDPIAINGQVMSPEVLL 246
             S EG +LEDP    PE  Y+  VSPE+APD P  + I+F++G P+A+NG+ + P  L+
Sbjct: 179 GRSIEGGILEDPDNEPPEDAYEWTVSPEDAPDEPEYVEIEFEKGVPVALNGEKLDPVELI 238

Query: 247 EQLNQYGRCNGIGRIDIVENRFVGIKSRGVYETPGGTILLHAHRAIESISLDSGSAHLKD 306
            +LN+    +G+GRIDIVENR +GIKSR VYE PG TIL+ AHR +ES++LD    H KD
Sbjct: 239 LELNEIAGKHGVGRIDIVENRVIGIKSREVYEAPGATILIKAHRDLESLTLDREVLHFKD 298

Query: 307 DLMSRYASIVYQGFWFSPEREMLQALIDKSQEYVEGSITLKLYKGNVMVVGRESNKSLYS 366
            +  +YA +VY G WFSP RE L+A IDK+QE V G++ LKLYKGNV+VVGRES  SLYS
Sbjct: 299 IVDPKYAELVYNGLWFSPLREALEAFIDKTQERVNGTVRLKLYKGNVIVVGRESPNSLYS 358

Query: 367 DKLVTFEDDLDAYNQSDSEGFIKLHALR 394
           ++L ++++D   ++Q D+EGFIK+H LR
Sbjct: 359 EELASYDED-GGFDQKDAEGFIKIHGLR 385