Entry
Name
homocitrate synthase;
2-hydroxybutane-1,2,4-tricarboxylate 2-oxoglutarate-lyase (CoA-acetylating);
acetyl-coenzyme A:2-ketoglutarate C-acetyl transferase;
homocitrate synthetase;
HCS
Class
Transferases;
Acyltransferases;
Acyl groups converted into alkyl groups on transfer
BRITE hierarchy
Sysname
acetyl-CoA:2-oxoglutarate C-acetyltransferase (thioester-hydrolysing, carboxymethyl-forming)
Reaction(IUBMB)
acetyl-CoA + H2O + 2-oxoglutarate = (2R)-2-hydroxybutane-1,2,4-tricarboxylate + CoA [RN:
R00271 ]
Reaction(KEGG)
Substrate
Product
(2R)-2-hydroxybutane-1,2,4-tricarboxylate;
CoA [CPD:
C00010 ]
Comment
Belongs in the alpha-aminoadipate pathway of lysine synthesis, along with EC
4.2.1.36 , homoaconitate hydratase. The enzyme also acts with oxaloacetate as substrate, but more slowly [2,3].
History
EC 2.3.3.14 created 1972 as EC 4.1.3.21, transferred 2002 to EC 2.3.3.14
Pathway
ec01110 Biosynthesis of secondary metabolites
ec01120 Microbial metabolism in diverse environments
Orthology
K02594 homocitrate synthase NifV
K10977 methanogen homocitrate synthase
Genes
SCE : YDL131W(LYS21) YDL182W(LYS20)
SPAO : SPAR_D00610 SPAR_D01060
KLA : KLLA0_E23695g KLLA0_F05489g
KMX : KLMA_10771(LYS21) KLMA_60493(LYS21)
LTH : KLTH0E12848g KLTH0H02486g
ZRO : ZYRO0A13222g ZYRO0C09416g
CGR : 2889536(GVI51_J06259) 2889949(LYS21)
NCS : NCAS_0A13800(NCAS0A13800) NCAS_0E03640(NCAS0E03640)
NDI : NDAI_0A02240(NDAI0A02240) NDAI_0A02990(NDAI0A02990)
TPF : TPHA_0P00840(TPHA0P00840)
TBL : TBLA_0A05940(TBLA0A05940)
TGB : HG536_0C05440 HG536_0H02920
TDL : TDEL_0B02910(TDEL0B02910) TDEL_0H01490(TDEL0H01490)
KAF : KAFR_0B01160(KAFR0B01160)
KNG : KNAG_0B02880(KNAG0B02880) KNAG_0C04080(KNAG0C04080)
ZMK : HG535_0A05750 HG535_0G01540
SLUD : SCDLUD_000290 SCDLUD_002024
DHA : DEHA2D13222g DEHA2F08514g
PIC : PICST_28701(LYS21) PICST_89386(LYS22)
PGU : PGUG_01126 PGUG_01480
SPAA : SPAPADRAFT_136285(LYS22) SPAPADRAFT_58182
LEL : PVL30_001014(LYS1_1) PVL30_001780(LYS21)
LBG : 92207809(LODBEIA_P26130) 92209571(LODBEIA_P43750)
CAL : CAALFM_C104730CA(LYS21) CAALFM_C204460WA(LYS22)
CTP : CTRG_01594 CTRG_04686
COT : CORT_0A12020 CORT_0B06650
CDU : CD36_04470 CD36_19070
CTEN : 18246775(LYS22) 18248055(LYS21)
CLU : CLUG_01219 CLUG_05100
CLUS : A9F13_03g01375 A9F13_06g00154
CAUR : CJI96_0001452 CJI96_0002255
ASAU : 88171985(PUMCH_000917) 88175465(PUMCH_004405)
PPA : PAS_chr1-1_0313 PAS_chr1-4_0421
PKZ : C5L36_0C01170 C5L36_0D05690
BBRX : BRETT_000905(LYS21_1) BRETT_003395(LYS21_2)
OPA : HPODL_02806 HPODL_04767
YLI : 2907696(YALI2_E00847g)
NTE : NEUTE1DRAFT68872(NEUTE1DRAFT_68872)
SMP : 10807367(SMAC4_00737)
PBEL : QC761_404040(LYS21)
PPSD : QC762_404040(LYS21)
PPSP : QC763_404040(LYS21)
PPSA : QC764_404040(LYS21)
RTHE : 98126597(VTJ83DRAFT_5361)
FGR : FGSG_03993 FGSG_11054
FPU : FPSE_02427 FPSE_05284
FPOA : FPOAC1_006422(LYS1_1) FPOAC1_009794(LYS1_2)
FVN : FVRRES_07028 FVRRES_10448
FVR : FVEG_00366 FVEG_08487 FVEG_11679
FOX : FOXG_01149 FOXG_01159
NHE : NECHADRAFT_104905 NECHADRAFT_90471
FFC : NCS54_00169600 NCS54_00936300
FKR : NCS57_00167300 NCS57_00956000
FMU : J7337_001595(LYS1_1) J7337_010079
TATV : 25783463(TrAtP1_002614)
MAW : 19248474(LYS21_2) 19249066(LYS21_1)
MBRN : 26240320(lys1_2) 26243663(lys1_3)
PCHM : VFPPC_01004 VFPPC_01351
PLJ : 28886033(PLICBS_007544) 28888981(PLICBS_008533)
PTKZ : JDV02_002478(LYS21)
VAL : VDBG_04044 VDBG_07402
VDA : VDAG_01275 VDAG_06110
CDET : 87948817(CDEST_12317)
PFY : PFICI_06350 PFICI_09647
AOR : AO090003001165 AO090124000027
AFV : AFLA_000502 AFLA_009184
ALUC : AKAW2_51586A(LYS1_2)
ACHE : ACHE_10778S(LYS1_1)
APUU : APUU_21064S(LYS1_1)
PTRR : 6347463(PtrM4_036810)
ADAC : 96082853(ACET3X_002531)
CDEP : 91088103(L203_103893)
KMG : 30162028(I203_107462)
KNE : 92183145(IAR55_005887)
CCAC : CcaHIS019_0703000(LYS21)
ABP : AGABI1DRAFT114278(AGABI1DRAFT_114278)
ABV : AGABI2DRAFT191298(AGABI2DRAFT_191298)
MORE : E1B28_011484(LYS4_1)
SCM : SCHCO_02503178(SCHCODRAFT_02503178)
REE : electrica_03306(leuA_2)
RTG : NCTC13098_03592(leuA_5)
MPHG : MPHASIOC01_000875(nifV)
SERA : Ser39006_005380(nifV)
BGJ : AWC36_07340 AWC36_21445
TLR : Thiosp_03513(leuA_2)
TFRI : Thiofri_02031(leuA_1)
TWG : Thiowin_03922(leuA_3)
CDIZ : CEDIAZO_02286(frbC)
BUG : BC1001_PA6327(nifV1) BC1001_PA6490(nifV2)
PSPW : BJG93_028040(nifV) BJG93_16455(nifV) BJG93_16555(nifV) BJG93_32345(nifV)
PDIO : PDMSB3_1662.1(nifV)
MESU : LHFGNBLO_006388(nifV)
SAME : SAMCFNEI73_pB0094(nifV)
MTUN : MTUNDRAET4_2336(nifV)
MPAR : F7D14_08630(nifV) F7D14_19185(nifV)
PLEO : OHA_1_01553(leuA_2)
GEC : GEO60473_19470(nifV)
GBN : GEOBRER4_11490(nifV)
DHG : EYB58_03450 EYB58_15510
TNR : Thena_0289 Thena_0491
TACI : TDSAC_0283 TDSAC_0468
OBT : OPIT5_01810 OPIT5_29700
CCOP : Mal65_24270(leuA_1)
CGLE : NCTC11432_00583(leuA_1)
PROC : Ptc2401_01787(leuA_4)
PDU : PDUR_11815 PDUR_11820 PDUR_11870 PDUR_21125
PSTE : PSTEL_11485 PSTEL_20960
PSOP : KP014_14795 KP014_14800 KP014_25280
PAUB : PUR_22370 PUR_22380 PUR_40220(aksA)
CAC : CA_C0260(nifV) CA_C0261(nifV)
CAE : SMB_G0265 SMB_G0266(nifV)
CAY : CEA_G0266 CEA_G0267(nifV)
CBE : Cbei_0069 Cbei_2011 Cbei_2012
CBZ : Cbs_0069(aksA) Cbs_2011 Cbs_2012
CBEI : LF65_00073(aksA) LF65_02180 LF65_02181
CKL : CKL_1757(nifV1) CKL_1758(nifV2)
CLJ : CLJU_c04970(nivfV) CLJU_c04980(nifV)
CCB : Clocel_2470 Clocel_2828 Clocel_2829
CLB : Clo1100_2596 Clo1100_2597
CSR : Cspa_c00800(leuA1) Cspa_c30980 Cspa_c30990
CPAS : Clopa_3456 Clopa_3457
CPAT : CLPA_c14420(nifVo) CLPA_c14430(nifVa)
CPAE : CPAST_c14420(nifVo) CPAST_c14430(nifVa)
CAH : CAETHG_2574 CAETHG_2575
CLT : CM240_3129(nifV-ALPHA) CM240_3130
CACE : CACET_c05330(leuA1)
CBUT : ATN24_01900(aksA) ATN24_18615 ATN24_18620
CTYK : CTK_C30180(nifV1) CTK_C30190(nifV2)
CDY : F3K33_00395(nifV) F3K33_10025 F3K33_10030
CLOS : DMR38_02135 DMR38_02140
CRW : CROST_005400 CROST_005410(frbC)
CFB : CLFE_043140(frbC) CLFE_043150
CAUN : CLAUR_024660(frbC) CLAUR_024670
CGEL : psyc5s11_00880 psyc5s11_35420(nifV)
CINT : HZF06_02710 HZF06_02715 HZF06_21910(nifV)
CLOL : ONV75_00475(nifV) ONV75_17615 ONV75_17620
CCL : Clocl_1269 Clocl_1270
RHER : EHE19_001280 EHE19_001285
RPAY : P0092_14545 P0092_14550
EHA : Ethha_1558 Ethha_1559 Ethha_2319 Ethha_2320
PETR : QKW49_13980 QKW49_13985
CFEM : HCR03_07075 HCR03_07080
DOR : Desor_3919 Desor_5017
DAI : Desaci_1215 Desaci_4028
DMI : Desmer_3032 Desmer_4010
DCA : Desca_1143 Desca_1729
DRU : Desru_1307 Desru_3444
DKU : Desku_1675 Desku_3339
TFR : BR63_02025 BR63_02030 BR63_18265(nifV)
AACX : DEACI_3021 DEACI_3067
TJR : TherJR_0701 TherJR_0874
DGI : Desgi_2429 Desgi_2455
HMO : HM1_0858(nifV) HM1_2993
HCV : FTV88_1447 FTV88_2463
AWO : Awo_c07850(nifV1) Awo_c07860(nifV2)
AWI : CHL1_002971 CHL1_002972
ANR : Ana3638_13875 Ana3638_13880
ACEL : acsn021_23530(nifV_1) acsn021_23540(nifV_2)
ACHT : bsdcttw_06510 bsdcttw_06520(nifV)
AHB : bsdtb5_41550(nifV_1)
CLE : Clole_0460 Clole_0461
CEW : EKH84_05550 EKH84_05555
CBAR : PATL70BA_2426(nifV)
AHAD : FRZ06_16415 FRZ06_16420
PDF : CD630DERM_08320(aksA)
PHX : KGNDJEFE_02031(leuA_1)
TPZ : Tph_c08720(nifV) Tph_c09000(leuA1)
MTHO : MOTHE_c19770(leuA2)
MTHZ : MOTHA_c20560(leuA2)
PUF : UFO1_0042 UFO1_0043 UFO1_3851 UFO1_3852
PFT : JBW_01018 JBW_01019 JBW_04455 JBW_04456
MANA : MAMMFC1_00442(leuA_1) MAMMFC1_00443(leuA_2) MAMMFC1_02645(leuA_6) MAMMFC1_02721(leuA_7) MAMMFC1_02722(leuA_8)
STED : SPTER_11640(leuA_1) SPTER_11650(leuA_2) SPTER_42560(leuA_3) SPTER_42570(leuA_4)
SSPH : SPSPH_041370(frbC) SPSPH_041380(leuA_2)
SOVA : SOV_47610(leuA_2) SOV_47620(leuA_3)
SSID : SPSIL_051100(frbC) SPSIL_051110(leuA_2)
SACV : SPACI_052090(frbC) SPACI_052100(leuA_2)
SNK : CP967_01820 CP967_15215
LET : O77CONTIG1_04713(leuA_4)
CYC : PCC7424_0947 PCC7424_2127
CYJ : Cyan7822_1791 Cyan7822_3668
ANA : alr1407(nifV1) alr2968(nifV2)
NOS : Nos7107_0175 Nos7107_3310
NOP : Nos7524_2286 Nos7524_5258
NON : NOS3756_17300(aksA_1) NOS3756_18600(aksA_2)
NFL : COO91_05479 COO91_05563
NOE : CLI64_00215(nifV) CLI64_05360(nifV)
NED : HUN01_22765(nifV) HUN01_23180(lysS)
NCW : NIES2107_08390(aksA) NIES2107_16830 NIES2107_48280
NCF : ANSO36C_25640(nifV) ANSO36C_26370
NOSU : JYQ62_02335(nifV) JYQ62_04545(nifV)
NOSQ : PQG02_09290(nifV) PQG02_36470(nifV)
AVA : Ava_0938 Ava_3956 Ava_4041
ANN : EH233_02680(nifV) EH233_03410(nifV) EH233_18315(nifV)
NSPH : BDGGKGIB_00194(leuA_1) BDGGKGIB_00937(leuA_2)
AEE : IM676_16795(nifV) IM676_16935(nifV)
CALO : Cal7507_0055 Cal7507_3999
CALN : NIES2098_35600 NIES2098_42590
MDP : NIES3275_27280 NIES3275_32850(aksA)
TTQ : NIES37_19740 NIES37_39270(aksA) NIES37_49570
ALAX : NIES50_00100 NIES50_36980 NIES50_47320(aksA)
SCYT : SAMD_18680 SAMD_71140
SCYS : NIES4073_21520 NIES4073_78240
NCN : BZZ01_06000 BZZ01_19685 BZZ01_20300
DEIN : DAAJ005_07905(lysS)
MARO : MarbSA_09070(aksA_1) MarbSA_13810(aksA_2)
MFEG : GCM10025860_11500(aksA)
MBA : Mbar_A2192 Mbar_A2268 Mbar_A2269
MBY : MSBRM_1356 MSBRM_1357 MSBRM_2239
MBW : MSBRW_2477 MSBRW_2478 MSBRW_2549
MBAR : MSBR2_0170 MSBR2_1052 MSBR2_1053
MAC : MA_1225(nifV) MA_1226(nifV) MA_3342(leuA)
MEK : MSKOL_2008 MSKOL_2218 MSKOL_2219
MSZ : MSSIH_2157 MSSIH_2896 MSSIH_2897
MSW : MSSIT_2270 MSSIT_2940 MSSIT_2941
MEHF : MmiHf6_03460(leuA_1)
MEES : MmiEs2_06200(leuA_1)
MCHK : MchiMG62_07630(aksA)
MEUZ : KRP56_01640 KRP56_02715(nifV)
» show all
Taxonomy
Reference
Authors
Strassman M, Ceci LN.
Title
Enzymatic formation of homocitric acid, an intermediate in lysine biosynthesis.
Journal
Reference
Authors
Wulandari AP, Miyazaki J, Kobashi N, Nishiyama M, Hoshino T, Yamane H.
Title
Characterization of bacterial homocitrate synthase involved in lysine biosynthesis.
Journal
Reference
Authors
Andi B, West AH, Cook PF.
Title
Kinetic mechanism of histidine-tagged homocitrate synthase from Saccharomyces cerevisiae.
Journal
Other DBs
ExplorEnz - The Enzyme Database: 2.3.3.14
ExPASy - ENZYME nomenclature database: 2.3.3.14
LinkDB
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