>TIGR01821 5aminolev_synth 5-aminolevulinic acid synthase; InterPro: IPR010961 Tetrapyrroles are large macrocyclic compounds derived from a common biosynthetic pathway . The end-product, uroporphyrinogen III, is used to synthesise a number of important molecules, including vitamin B12, haem, sirohaem, chlorophyll, coenzyme F430 and phytochromobilin . The first stage in tetrapyrrole synthesis is the synthesis of 5-aminoaevulinic acid ALA via two possible routes: (1) condensation of succinyl CoA and glycine (C4 pathway) using ALA synthase (2.3.1.37 from EC), or (2) decarboxylation of glutamate (C5 pathway) via three different enzymes, glutamyl-tRNA synthetase (6.1.1.17 from EC) to charge a tRNA with glutamate, glutamyl-tRNA reductase (1.2.1.70 from EC) to reduce glutamyl-tRNA to glutamate-1-semialdehyde (GSA), and GSA aminotransferase (5.4.3.8 from EC) to catalyse a transamination reaction to produce ALA. The second stage is to convert ALA to uroporphyrinogen III, the first macrocyclic tetrapyrrolic structure in the pathway. This is achieved by the action of three enzymes in one common pathway: porphobilinogen (PBG) synthase (or ALA dehydratase, 4.2.1.24 from EC) to condense two ALA molecules to generate porphobilinogen; hydroxymethylbilane synthase (or PBG deaminase, 2.5.1.61 from EC) to polymerise four PBG molecules into preuroporphyrinogen (tetrapyrrole structure); and uroporphyrinogen III synthase (4.2.1.75 from EC) to link two pyrrole units together (rings A and D) to yield uroporphyrinogen III. Uroporphyrinogen III is the first branch point of the pathway. To synthesise cobalamin (vitamin B12), sirohaem, and coenzyme F430, uroporphyrinogen III needs to be converted into precorrin-2 by the action of uroporphyrinogen III methyltransferase (2.1.1.107 from EC). To synthesise haem and chlorophyll, uroporphyrinogen III needs to be decarboxylated into coproporphyrinogen III by the action of uroporphyrinogen III decarboxylase (4.1.1.37 from EC) . This entry represents 5-aminoaevulinic acid (ALA) synthase (2.3.1.37 from EC), which catalyses the first stage of tetrapyrrole biosynthesis by the C4 pathway, namely the condensation of succinyl CoA and glycine. ALA synthase is a pyridoxal-phosphate-dependent enzyme. During catalysis, glycine initially binds to the enzyme cofactor, and after condensation with succinyl CoA, CoA, carbon dioxide and 5-aminolevulinic acid are produced .; GO: 0003870 5-aminolevulinate synthase activity, 0030170 pyridoxal phosphate binding, 0033014 tetrapyrrole biosynthetic process.

Probab=99.29 E-value=2.7e-12 Score=94.99 Aligned_cols=347 Identities=15% Similarity=0.192 Sum_probs=183.2 Q ss_pred HHHHHHHHCCCC---HHHHHHHHHH-H------HHHCC--CCEEECCCCCCCC--CCCHHHHHHHHHHHHCCCCCC---- Q ss_conf 678898738975---8999999999-9------99869--9726656589749--889999999999983887569---- Q gi|254780602|r 3 FISNILRRVQPS---ATLVAAQRVR-D------LRSKG--IDVLCLTAGEPDF--DMPENVKYAVVRAMERGETKY---- 64 (400) Q Consensus 3 ~~s~~~~~l~~s---~~~~~~~~~~-~------~~~~g--~~ii~l~~G~p~~--~~p~~i~~a~~~al~~~~~~Y---- 64 (400) T Consensus 6 ~f~~~id~~~~egrYR~F~~l~R~ag~FP~A~~~~~~g~~~d-VtVWCSNDYLGMgqHp~Vl~Am~~~~~~~GaGaGGTR 84 (427) T TIGR01821 6 FFDKEIDKLHQEGRYRVFADLERLAGEFPFAQWHSPDGVKKD-VTVWCSNDYLGMGQHPKVLQAMHEALDKVGAGAGGTR 84 (427) T ss_pred HHHHHHHHHHCCCCCCCCCCHHHHHCCCCCCEEECCCCCCEE-EEEEECCCHHHCCCCHHHHHHHHHHHHHCCCCCCCCC T ss_conf 899987654038985002243635178985134265778101-7887212132048865479889999996388998753 Q ss_pred ---CCCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCC--CCCCCCCCCCCCCCCCCCC---CCCC Q ss_conf ---9877898999999998642101333322332334543333222222233--2232222333323222222---2222 Q gi|254780602|r 65 ---TAVAGISPLREAIVEKFRRDNDLHYTSDQIIVGTGAKHVIFNALMATVN--MGDEVLIPRPYWVSYPDMV---ALCG 136 (400) Q Consensus 65 ---~~~~G~~~lR~aia~~~~~~~g~~~~~e~I~it~G~~~~l~~~~~~~~~--~Gd~Vlv~~P~y~~y~~~~---~~~g 136 (400) T Consensus 85 NIsGtn~~~v~LEaELAdLH~K-------E~ALvFtSg-yVaNda~L~tL~k~~P~-~~ifSD~--LNHASMI~GIr~S~ 153 (427) T TIGR01821 85 NISGTNIYHVELEAELADLHGK-------ESALVFTSG-YVANDATLATLAKIIPG-CVIFSDE--LNHASMIEGIRRSG 153 (427) T ss_pred CCCCCCHHHHHHHHHHHHHCCC-------CHHHHHHHH-HHHHHHHHHHHHHHCCC-EEEEECC--CCHHHHHHHHHHCC T ss_conf 6566777899999999755173-------113567788-99999999999987088-5898365--56356999987478 Q ss_pred CCCCCCCCCCCCCCCCHHHHHHCCCC---C-CCCCEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCEEECCCCCC-CCC Q ss_conf 22222222222322210333100012---2-122012113542100001233332111223333320111012211-000 Q gi|254780602|r 137 GIPVFVDTQQDDNFQVSPEKLEQAIT---P-KTKWLFLNSPSNPSGVVYSQNRLRALADVLVRNPHVHIISDDIYE-HIV 211 (400) Q Consensus 137 ~~~~~v~~~~~~~~~~d~~~l~~~i~---~-~~k~i~l~nP~NPTG~v~s~~~l~~i~~~~a~~~~i~ii~De~Y~-~l~ 211 (400) T Consensus 154 ~~k~iF----r---HND~~hLe~LL~~~d~~~PKiIAFESvYSMDGd---~aPi~eiCDl-A~kYGALTy~DEVHAVGl- 221 (427) T TIGR01821 154 AEKFIF----R---HNDVAHLEKLLQSVDPNAPKIIAFESVYSMDGD---IAPIKEICDL-ADKYGALTYLDEVHAVGL- 221 (427) T ss_pred CCEEEE----E---CCCHHHHHHHHHHCCCCCCCEEEEEEHCCCCCC---CCCHHHHHHH-HHHHCCCCEECCEEEECC- T ss_conf 950563----0---599789999986477998956886100016787---2667889668-887188630011465336- Q ss_pred CCCCCCCCCCCCC-------CC--------------CCC-EEEEECCCCCCCCCCCCCCCCCCCHHHHHHHHHHHCCCCC Q ss_conf 0012233222111-------23--------------332-2574146544322344544422110122687531001222 Q gi|254780602|r 212 YRNCQFSNIVNVE-------PS--------------LYE-RTLVVNGVSKAYAMTGLRIGYAAGALSLIKSMIVLQGQQT 269 (400) Q Consensus 212 ~~~~~~~s~~~~~-------~~--------------~~~-~~i~~~S~SK~~~~~G~RiG~~v~~~~li~~l~~~~~~~~ 269 (400) T Consensus 222 Y-GprGgGIaErddfeshrasGiatPktndkGGakt~mhriDii~GTLaKAFG~~G---GYIa~~~~L~D~~RS~ApGFI 297 (427) T TIGR01821 222 Y-GPRGGGIAERDDFESHRASGIATPKTNDKGGAKTLMHRIDIIEGTLAKAFGVVG---GYIAASRKLIDAVRSYAPGFI 297 (427) T ss_pred C-CCCCCCCCHHHHCCHHCCCCCCCCCCCCCCCCEECCCCCCCCCCCCHHHCCCCC---CEEECCCCCEEEEEECCCCCH T ss_conf 5-888885120221100001576777657666520011100000165112234445---302055221320000378421 Q ss_pred CC---CCCCCCCCCCCCCCCCCCC-CCCCCCCCCCCCCCHHHHHHCCCCCEEEECCCCEEEEEECCCCCCCCCCCCCCCC Q ss_conf 33---2222222222223467643-2222221100000002455304776033027408998626410233211332248 Q gi|254780602|r 270 SG---ACSIAQWAAVEALNGPQDF-VVNNRKIFEYRRDLCVAQLQGVPGIRYMIPDGAFYLYPSCQDLIGKKSPSGDVIR 345 (400) Q Consensus 270 ~~---~~~~~q~a~~~~l~~~~~~-~~~~~~~~~~~r~~~~~~L~~~~g~~~~~p~g~~y~~~~~~~~~~~~~~~~~~~~ 345 (400) T Consensus 298 FTTsLPP~~-~aGA~asIRhLK~~eg~~lR~~hQ~~~~~lK~~L~~~-GlPv~~~p-SH-I---vPv~i------GdA-~ 363 (427) T TIGR01821 298 FTTSLPPAI-AAGALASIRHLKESEGQDLRRAHQERVKRLKKLLEAL-GLPVIDNP-SH-I---VPVII------GDA-A 363 (427) T ss_pred HHHHHHHHH-HHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHC-CCCCCCCC-CE-E---EEEEE------CCH-H T ss_conf 242155899-9999999999751376778999989999999999957-77754887-73-8---87676------686-8 Q ss_pred CHHHHHHHHHHHCCEEEECCCCCC--CCCE--EEEEEEC--CH---HHHHHHHHHH Q ss_conf 989999999987397998350228--9972--8999629--99---9999999999 Q gi|254780602|r 346 TDLDFVNGLLEIEKVAVVQGSSFG--HGPS--IRISYAV--SD---AILEEACVRI 392 (400) Q Consensus 346 ~~~~~~~~Ll~~~gV~v~pG~~Fg--~~~~--iRis~~~--~~---e~l~~al~rl 392 (400) T Consensus 364 ~~k~~SD~LL~~hGIYVQp-INyPTVpRG~ERLRitPtP~H~~~~id~Lv~AL~~~ 418 (427) T TIGR01821 364 KCKKVSDLLLNKHGIYVQP-INYPTVPRGTERLRITPTPVHTDKLIDDLVEALLLV 418 (427) T ss_pred HHHHHHHHHHHHCCCEEEC-CCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHH T ss_conf 8989989888717815712-688889887502442688898877899999999999

HHsearch alignment for GI: 254780602 and conserved domain: TIGR01821