KGD_MYCTA
ID KGD_MYCTA Reviewed; 1231 AA.
AC A5U1U6;
DT 13-NOV-2007, integrated into UniProtKB/Swiss-Prot.
DT 13-NOV-2007, sequence version 2.
DT 03-AUG-2022, entry version 85.
DE RecName: Full=Multifunctional 2-oxoglutarate metabolism enzyme;
DE AltName: Full=2-hydroxy-3-oxoadipate synthase;
DE Short=HOA synthase;
DE Short=HOAS;
DE EC=2.2.1.5;
DE AltName: Full=2-oxoglutarate carboxy-lyase;
DE AltName: Full=2-oxoglutarate decarboxylase;
DE AltName: Full=Alpha-ketoglutarate decarboxylase;
DE Short=KG decarboxylase;
DE Short=KGD;
DE EC=4.1.1.71;
DE AltName: Full=Alpha-ketoglutarate-glyoxylate carboligase;
DE Includes:
DE RecName: Full=2-oxoglutarate dehydrogenase E1 component;
DE Short=ODH E1 component;
DE EC=1.2.4.2;
DE AltName: Full=Alpha-ketoglutarate dehydrogenase E1 component;
DE Short=KDH E1 component;
DE Includes:
DE RecName: Full=Dihydrolipoyllysine-residue succinyltransferase component of 2-oxoglutarate dehydrogenase complex;
DE EC=2.3.1.61;
DE AltName: Full=2-oxoglutarate dehydrogenase complex E2 component;
DE Short=ODH E2 component;
DE Short=OGDC-E2;
DE AltName: Full=Dihydrolipoamide succinyltransferase;
GN Name=kgd; OrderedLocusNames=MRA_1256;
OS Mycobacterium tuberculosis (strain ATCC 25177 / H37Ra).
OC Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC Mycobacterium; Mycobacterium tuberculosis complex.
OX NCBI_TaxID=419947;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 25177 / H37Ra;
RX PubMed=18584054; DOI=10.1371/journal.pone.0002375;
RA Zheng H., Lu L., Wang B., Pu S., Zhang X., Zhu G., Shi W., Zhang L.,
RA Wang H., Wang S., Zhao G., Zhang Y.;
RT "Genetic basis of virulence attenuation revealed by comparative genomic
RT analysis of Mycobacterium tuberculosis strain H37Ra versus H37Rv.";
RL PLoS ONE 3:E2375-E2375(2008).
CC -!- FUNCTION: Shows three enzymatic activities that share a first common
CC step, the attack of thiamine-PP on 2-oxoglutarate (alpha-ketoglutarate,
CC KG), leading to the formation of an enamine-thiamine-PP intermediate
CC upon decarboxylation. Thus, displays KGD activity, catalyzing the
CC decarboxylation from five-carbon 2-oxoglutarate to four-carbon
CC succinate semialdehyde (SSA). Also catalyzes C-C bond formation between
CC the activated aldehyde formed after decarboxylation of alpha-
CC ketoglutarate and the carbonyl of glyoxylate (GLX), to yield 2-hydroxy-
CC 3-oxoadipate (HOA), which spontaneously decarboxylates to form 5-
CC hydroxylevulinate (HLA). And is also a component of the 2-oxoglutarate
CC dehydrogenase (ODH) complex, that catalyzes the overall conversion of
CC 2-oxoglutarate to succinyl-CoA and CO(2). The KG decarboxylase and KG
CC dehydrogenase reactions provide two alternative, tightly regulated,
CC pathways connecting the oxidative and reductive branches of the TCA
CC cycle (By similarity). {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2-oxoglutarate + glyoxylate + H(+) = 2-hydroxy-3-oxoadipate +
CC CO2; Xref=Rhea:RHEA:14341, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:16810, ChEBI:CHEBI:36655, ChEBI:CHEBI:57712; EC=2.2.1.5;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2-oxoglutarate + H(+) = CO2 + succinate semialdehyde;
CC Xref=Rhea:RHEA:10524, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:16810, ChEBI:CHEBI:57706; EC=4.1.1.71;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(R)-N(6)-lipoyl-L-lysyl-[dihydrolipoyllysine-residue
CC succinyltransferase] + 2-oxoglutarate + H(+) = (R)-N(6)-(S(8)-
CC succinyldihydrolipoyl)-L-lysyl-[dihydrolipoyllysine-residue
CC succinyltransferase] + CO2; Xref=Rhea:RHEA:12188, Rhea:RHEA-
CC COMP:10483, Rhea:RHEA-COMP:10484, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16526, ChEBI:CHEBI:16810, ChEBI:CHEBI:83099,
CC ChEBI:CHEBI:83120; EC=1.2.4.2;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(R)-N(6)-dihydrolipoyl-L-lysyl-[2-oxoglutarate dehydrogenase
CC complex component E2] + succinyl-CoA = (R)-N(6)-(S(8)-
CC succinyldihydrolipoyl)-L-lysyl-[2-oxoglutarate dehydrogenase complex
CC component E2] + CoA; Xref=Rhea:RHEA:15213, Rhea:RHEA-COMP:10581,
CC Rhea:RHEA-COMP:10582, ChEBI:CHEBI:57287, ChEBI:CHEBI:57292,
CC ChEBI:CHEBI:83100, ChEBI:CHEBI:83120; EC=2.3.1.61;
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000250};
CC -!- ACTIVITY REGULATION: Alpha-ketoglutarate dehydrogenase and
CC decarboxylase activities are inhibited by unphosphorylated GarA, and
CC allosterically activated by acetyl-CoA, the main substrate of the TCA
CC cycle. {ECO:0000250}.
CC -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; succinate
CC from 2-oxoglutarate (transferase route): step 1/2.
CC -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; succinyl-
CC CoA from 2-oxoglutarate (dehydrogenase route): step 1/1.
CC -!- SUBUNIT: Homodimer. The 2-oxoglutarate dehydrogenase (ODH) complex
CC contains multiple copies of three enzymatic components: 2-oxoglutarate
CC dehydrogenase (E1), dihydrolipoamide succinyltransferase (E2) and
CC lipoamide dehydrogenase (E3) (By similarity). {ECO:0000250}.
CC -!- DOMAIN: Is a fusion protein with two major domains exhibiting
CC structural features of an E1 and E2 protein, and a short sequence
CC stretch of E1 localized at the N-terminus, which is connected by a
CC linker region to the rest of the protein. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the 2-oxoacid dehydrogenase family. Kgd
CC subfamily. {ECO:0000305}.
CC -!- SEQUENCE CAUTION:
CC Sequence=ABQ72996.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; CP000611; ABQ72996.1; ALT_INIT; Genomic_DNA.
DR RefSeq; WP_003898790.1; NZ_CP016972.1.
DR AlphaFoldDB; A5U1U6; -.
DR SMR; A5U1U6; -.
DR STRING; 419947.MRA_1256; -.
DR EnsemblBacteria; ABQ72996; ABQ72996; MRA_1256.
DR KEGG; mra:MRA_1256; -.
DR eggNOG; COG0508; Bacteria.
DR eggNOG; COG0567; Bacteria.
DR HOGENOM; CLU_004709_1_0_11; -.
DR OrthoDB; 29166at2; -.
DR UniPathway; UPA00223; UER00997.
DR UniPathway; UPA00223; UER01001.
DR Proteomes; UP000001988; Chromosome.
DR GO; GO:0050439; F:2-hydroxy-3-oxoadipate synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0008683; F:2-oxoglutarate decarboxylase activity; IEA:UniProtKB-EC.
DR GO; GO:0004149; F:dihydrolipoyllysine-residue succinyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProt.
DR GO; GO:0004591; F:oxoglutarate dehydrogenase (succinyl-transferring) activity; IEA:UniProtKB-EC.
DR GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:InterPro.
DR GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.30.559.10; -; 1.
DR Gene3D; 3.40.50.11610; -; 1.
DR InterPro; IPR001078; 2-oxoacid_DH_actylTfrase.
DR InterPro; IPR032106; 2-oxogl_dehyd_N.
DR InterPro; IPR011603; 2oxoglutarate_DH_E1.
DR InterPro; IPR023213; CAT-like_dom_sf.
DR InterPro; IPR001017; DH_E1.
DR InterPro; IPR031717; KGD_C.
DR InterPro; IPR042179; KGD_C_sf.
DR InterPro; IPR029061; THDP-binding.
DR InterPro; IPR005475; Transketolase-like_Pyr-bd.
DR PANTHER; PTHR23152; PTHR23152; 1.
DR Pfam; PF00198; 2-oxoacid_dh; 1.
DR Pfam; PF16078; 2-oxogl_dehyd_N; 1.
DR Pfam; PF00676; E1_dh; 1.
DR Pfam; PF16870; OxoGdeHyase_C; 1.
DR Pfam; PF02779; Transket_pyr; 1.
DR PIRSF; PIRSF000157; Oxoglu_dh_E1; 1.
DR SMART; SM00861; Transket_pyr; 1.
DR SUPFAM; SSF52518; SSF52518; 2.
DR TIGRFAMs; TIGR00239; 2oxo_dh_E1; 1.
PE 3: Inferred from homology;
KW Acyltransferase; Allosteric enzyme; Coiled coil; Decarboxylase; Lyase;
KW Magnesium; Metal-binding; Multifunctional enzyme; Oxidoreductase;
KW Thiamine pyrophosphate; Transferase; Tricarboxylic acid cycle.
FT CHAIN 1..1231
FT /note="Multifunctional 2-oxoglutarate metabolism enzyme"
FT /id="PRO_0000310723"
FT REGION 1..41
FT /note="2-oxoglutarate dehydrogenase E1, N-terminal part"
FT REGION 38..79
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 42..88
FT /note="Linker"
FT REGION 89..337
FT /note="Succinyltransferase E2"
FT REGION 338..1231
FT /note="2-oxoglutarate dehydrogenase E1, C-terminal part"
FT REGION 1093..1096
FT /note="Acetyl-CoA; allosteric activator"
FT /evidence="ECO:0000250|UniProtKB:A0R2B1"
FT REGION 1153..1154
FT /note="Acetyl-CoA; allosteric activator"
FT /evidence="ECO:0000250|UniProtKB:A0R2B1"
FT COILED 787..817
FT /evidence="ECO:0000255"
FT ACT_SITE 316
FT /note="Proton acceptor; for succinyltransferase activity"
FT /evidence="ECO:0000250"
FT BINDING 541..542
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000250"
FT BINDING 581
FT /ligand="2-oxoglutarate"
FT /ligand_id="ChEBI:CHEBI:16810"
FT /evidence="ECO:0000250"
FT BINDING 606..608
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000250"
FT BINDING 606
FT /ligand="2-oxoglutarate"
FT /ligand_id="ChEBI:CHEBI:16810"
FT /evidence="ECO:0000250"
FT BINDING 649..651
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000250"
FT BINDING 649
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250"
FT BINDING 682
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250"
FT BINDING 684
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250"
FT BINDING 956
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000250"
FT BINDING 1024
FT /ligand="2-oxoglutarate"
FT /ligand_id="ChEBI:CHEBI:16810"
FT /evidence="ECO:0000250"
FT BINDING 1042
FT /ligand="acetyl-CoA"
FT /ligand_id="ChEBI:CHEBI:57288"
FT /ligand_note="allosteric activator"
FT /evidence="ECO:0000250|UniProtKB:A0R2B1"
FT BINDING 1058
FT /ligand="acetyl-CoA"
FT /ligand_id="ChEBI:CHEBI:57288"
FT /ligand_note="allosteric activator"
FT /evidence="ECO:0000250|UniProtKB:A0R2B1"
FT BINDING 1146
FT /ligand="acetyl-CoA"
FT /ligand_id="ChEBI:CHEBI:57288"
FT /ligand_note="allosteric activator"
FT /evidence="ECO:0000250|UniProtKB:A0R2B1"
SQ SEQUENCE 1231 AA; 135902 MW; 96C255612BA12889 CRC64;
MANISSPFGQ NEWLVEEMYR KFRDDPSSVD PSWHEFLVDY SPEPTSQPAA EPTRVTSPLV
AERAAAAAPQ APPKPADTAA AGNGVVAALA AKTAVPPPAE GDEVAVLRGA AAAVVKNMSA
SLEVPTATSV RAVPAKLLID NRIVINNQLK RTRGGKISFT HLLGYALVQA VKKFPNMNRH
YTEVDGKPTA VTPAHTNLGL AIDLQGKDGK RSLVVAGIKR CETMRFAQFV TAYEDIVRRA
RDGKLTTEDF AGVTISLTNP GTIGTVHSVP RLMPGQGAII GVGAMEYPAE FQGASEERIA
ELGIGKLITL TSTYDHRIIQ GAESGDFLRT IHELLLSDGF WDEVFRELSI PYLPVRWSTD
NPDSIVDKNA RVMNLIAAYR NRGHLMADTD PLRLDKARFR SHPDLEVLTH GLTLWDLDRV
FKVDGFAGAQ YKKLRDVLGL LRDAYCRHIG VEYAHILDPE QKEWLEQRVE TKHVKPTVAQ
QKYILSKLNA AEAFETFLQT KYVGQKRFSL EGAESVIPMM DAAIDQCAEH GLDEVVIGMP
HRGRLNVLAN IVGKPYSQIF TEFEGNLNPS QAHGSGDVKY HLGATGLYLQ MFGDNDIQVS
LTANPSHLEA VDPVLEGLVR AKQDLLDHGS IDSDGQRAFS VVPLMLHGDA AFAGQGVVAE
TLNLANLPGY RVGGTIHIIV NNQIGFTTAP EYSRSSEYCT DVAKMIGAPI FHVNGDDPEA
CVWVARLAVD FRQRFKKDVV IDMLCYRRRG HNEGDDPSMT NPYVYDVVDT KRGARKSYTE
ALIGRGDISM KEAEDALRDY QGQLERVFNE VRELEKHGVQ PSESVESDQM IPAGLATAVD
KSLLARIGDA FLALPNGFTA HPRVQPVLEK RREMAYEGKI DWAFGELLAL GSLVAEGKLV
RLSGQDSRRG TFSQRHSVLI DRHTGEEFTP LQLLATNSDG SPTGGKFLVY DSPLSEYAAV
GFEYGYTVGN PDAVVLWEAQ FGDFVNGAQS IIDEFISSGE AKWGQLSNVV LLLPHGHEGQ
GPDHTSARIE RFLQLWAEGS MTIAMPSTPS NYFHLLRRHA LDGIQRPLIV FTPKSMLRHK
AAVSEIKDFT EIKFRSVLEE PTYEDGIGDR NKVSRILLTS GKLYYELAAR KAKDNRNDLA
IVRLEQLAPL PRRRLRETLD RYENVKEFFW VQEEPANQGA WPRFGLELPE LLPDKLAGIK
RISRRAMSAP SSGSSKVHAV EQQEILDEAF G
