KEGG   ENZYME: 3.2.1.17Help
Entry
EC 3.2.1.17                 Enzyme                                 
Name
lysozyme;
muramidase;
globulin G;
mucopeptide glucohydrolase;
globulin G1;
N,O-diacetylmuramidase;
lysozyme g;
L-7001;
1,4-N-acetylmuramidase;
mucopeptide N-acetylmuramoylhydrolase;
PR1-lysozyme
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
peptidoglycan N-acetylmuramoylhydrolase
Reaction(IUBMB)
Hydrolysis of (1->4)-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrins
Comment
cf. also EC 3.2.1.14 chitinase.
Orthology
K01185  
lysozyme
K11331  
cation efflux system protein involved in nickel and cobalt tolerance
K13381  
bifunctional chitinase/lysozyme
K13915  
lysozyme C
Genes
HSA: 
119180(LYZL2) 389852(SPACA5) 4069(LYZ) 57151(LYZL6) 729201(SPACA5B) 84569(LYZL1)
PTR: 
450190(LYZ) 450382(LYZL1) 465613(SPACA5B) 468388(LYZL6) 736064(LYZL2)
PPS: 
100970943(LYZ) 100976701(LYZL1) 100994594(SPACA5) 100995179(LYZL6)
GGO: 
101130053(LYZL2) 101131902(LYZ) 101140406(SPACA5) 101150696(LYZL6)
PON: 
100436864(LYZL6) 100439578(SPACA5) 100450383(LYZL1) 100451264(LYZ)
MCC: 
693706 708435(SPACA5) 716662(LYZL6) 718361(LYZ)
MMU: 
17105(Lyz2) 17110(Lyz1) 278203(Spaca5) 67328(Lyzl1) 69444(Lyzl6)
RNO: 
25211(Lyz2) 287751(Lyzl6) 314431(Spaca5) 364745(Lyzl1) 688047(Lyc2)
CFA: 
474442(LYZ) 480492(LYZL6) 480901(SPACA5) 487083(LYZL1)
AML: 
FCA: 
100127109(LYZ) 101090367(LYZL1) 101091348(SPACA5)
BTA: 
281287(LYZ1) 281289(LYZ3) 512087(LYZL1) 517880(SPACA5) 540048(LYZL6) 777776(LYZ) 781146 781349(LYZ1)
SSC: 
100157211(LYZ) 100415934(SPACA5) 100517051 100738578
ECB: 
100052143 100055156 100058582 100061578 100063794
MDO: 
100011114 100013718 100015220
SHR: 
100920653(LYZ)
OAA: 
100076093 100079369 100090093
GGA: 
396218(LYZ)
MGP: 
100547044(LYZ)
TGU: 
100190600
ACS: 
100554861 100555087 100564608
XTR: 
100492798 448362 496769(spaca5)
DRE: 
677744(lyz)
TRU: 
445925(lysozyme_C)
OLA: 
100302449
BFO: 
BRAFLDRAFT_67146
DME: 
Dmel_CG11159 Dmel_CG1165(LysS) Dmel_CG1179(LysB) Dmel_CG1180(LysE) Dmel_CG16756 Dmel_CG16799 Dmel_CG30062 Dmel_CG7798 Dmel_CG8492 Dmel_CG9111(LysC) Dmel_CG9116(LysP) Dmel_CG9118(LysD) Dmel_CG9120(LysX)
DPO: 
Dpse_GA11118 Dpse_GA20595
DAN: 
Dana_GF10076 Dana_GF12660
DER: 
Dere_GG14615 Dere_GG22291
DPE: 
Dper_GL16156 Dper_GL16691
DSE: 
Dsec_GM20080
DSI: 
Dsim_GD25558
DWI: 
Dwil_GK12043 Dwil_GK12154 Dwil_GK12260 Dwil_GK21084
DYA: 
Dyak_GE14087
DGR: 
Dgri_GH21060
DMO: 
Dmoj_GI18662
DVI: 
Dvir_GJ21678
AGA: 
AgaP_AGAP007344(LYSC8) AgaP_AGAP007347(LYSC1_ANOGA)
AAG: 
AaeL_AAEL003723
CQU: 
CpipJ_CPIJ005450
TCA: 
658610(Lyz)
PHU: 
Phum_PHUM563940
ISC: 
IscW_ISCW001645
AFV: 
AFLA_138180
TET: 
TTHERM_00024350 TTHERM_00024410 TTHERM_00083410 TTHERM_00083420 TTHERM_00666790 TTHERM_01243480 TTHERM_01250150
ECO: 
b0555(rrrD) b1554(rrrQ) b3338(chiA)
ECJ: 
Y75_p0541(ybcS) Y75_p1530(ydfQ) Y75_p3838(chiA)
ECD: 
ECDH10B_0512(ybcS) ECDH10B_0620(ybcS) ECDH10B_1339(19) ECDH10B_1686(ydfQ)
EBW: 
BWG_0427(arrD) BWG_1373(arrQ) BWG_3029(chiA)
ECE: 
Z0960 Z1469 Z1796 Z2071 Z2120 Z2371 Z3104 Z3339 Z6051
ECS: 
ECs0819 ECs1096 ECs1213 ECs1532 ECs1784 ECs1964 ECs2186 ECs2259 ECs2741 ECs2968 ECs4962
ECF: 
ECH74115_0892 ECH74115_1174 ECH74115_1529 ECH74115_1774 ECH74115_1858 ECH74115_2254 ECH74115_2785 ECH74115_2900 ECH74115_3143 ECH74115_3208 ECH74115_3526 ECH74115_3876
ETW: 
ECSP_0841 ECSP_1111 ECSP_1452 ECSP_1677 ECSP_1749 ECSP_2111 ECSP_2609 ECSP_2717(lys) ECSP_2955 ECSP_3249(r) ECSP_3577
ELX: 
CDCO157_0798 CDCO157_1062 CDCO157_1159 CDCO157_1466 CDCO157_1714 CDCO157_2026 CDCO157_2094 CDCO157_2529 CDCO157_2733
EOJ: 
ECO26_0595 ECO26_0863 ECO26_1132 ECO26_1208 ECO26_1488 ECO26_1607 ECO26_1801 ECO26_1948 ECO26_2185 ECO26_2641 ECO26_3183 ECO26_3692
EOI: 
ECO111_1073 ECO111_1153 ECO111_1435 ECO111_1606 ECO111_2030 ECO111_2422 ECO111_2583 ECO111_2964 ECO111_4890 ECO111_p2-016
EOH: 
ECO103_0530 ECO103_0772 ECO103_1197 ECO103_1387 ECO103_2091 ECO103_2326 ECO103_5203
ECG: 
E2348C_0690 E2348C_0824 E2348C_1015 E2348C_1250 E2348C_1412
EOK: 
G2583_0313(ybcS) G2583_0688(ybcS) G2583_0970(ybcS) G2583_1559(ybcS) G2583_1723 G2583_1943 G2583_2457 G2583_3237 G2583_5201(ydfQ)
ELR: 
ECO55CA74_01490 ECO55CA74_04700 ECO55CA74_07585 ECO55CA74_08415 ECO55CA74_09540 ECO55CA74_11830 ECO55CA74_12975
ECC: 
c0957 c1436 c1562(ybcS) c3180 c4109(chiA)
ECP: 
ECP_1160 ECP_3428
ECI: 
UTI89_C1303(ybcS1) UTI89_C1490 UTI89_C2660 UTI89_C3793(yheB) UTI89_C5112(ybcS2)
ECV: 
APECO1_1029 APECO1_2033(ydfQ) APECO1_242(ybcS2) APECO1_3115(yheB) APECO1_392 APECO1_4196 APECO1_514
ECX: 
EcHS_A0931 EcHS_A1644 EcHS_A3533(chiA)
ECW: 
EcE24377A_0827
ECM: 
EcSMS35_1183
ECY: 
ECSE_0589
ECR: 
ECIAI1_0777(ybcS) ECIAI1_1597(ydfQ)
ECQ: 
ECED1_0888(lys) ECED1_1028(ydfQ) ECED1_1124(ydfQ) ECED1_1430(ydfQ) ECED1_2107(ydfQ) ECED1_2527(ydfQ) ECED1_3082(R) ECED1_3998(chiA)
ECK: 
EC55989_0784(ybcS) EC55989_1054(ydfQ) EC55989_1384(ydfQ) EC55989_1715(ydfQ) EC55989_2620(ybcS)
ECT: 
ECIAI39_1503(ydfQ) ECIAI39_1808(R) ECIAI39_4875(ybcS)
EOC: 
CE10_0525(arrD1) CE10_1045(arrQ1) CE10_1463(arrQ2) CE10_1819(arrQ3) CE10_2460(arrQ4) CE10_5146(arrD2)
EUM: 
ECUMN_0606(ybcS) ECUMN_1335(ydfQ) ECUMN_1411(ybcS) ECUMN_1841(ydfQ)
ECZ: 
ECS88_0562(ydfQ) ECS88_1185(ybcS) ECS88_2828(R) ECS88_3726(chiA) ECS88_5020(ydfQ)
ELO: 
EC042_1349 EC042_1487 EC042_1703E EC042_2175
ELN: 
NRG857_05650 NRG857_07800 NRG857_16545
ELH: 
ETEC_0808(ybcS) ETEC_3590 ETEC_4700
ESE: 
ECSF_3163
ESO: 
O3O_07630 O3O_09195 O3O_10540 O3O_11385 O3O_13130 O3O_15180
ESM: 
O3M_10405 O3M_12470 O3M_14210 O3M_16080 O3M_17630
ESL: 
O3K_10435 O3K_12505 O3K_14230 O3K_16105 O3K_17650
ECL: 
EcolC_0375 EcolC_2083 EcolC_2770
EBR: 
ECB_00507(ybcS) ECB_01337(ydfQ-1) ECB_01519(ydfQ-2) ECB_03189(chiA)
EBD: 
ECBD_0412 ECBD_2257 ECBD_3100
EKO: 
EKO11_2233 EKO11_3014 EKO11_3623
EKF: 
KO11_01440 KO11_15015(arrQ) KO11_19410
EAB: 
ECABU_c11720 ECABU_c13850 ECABU_c37590
EDH: 
EcDH1_0375 EcDH1_2090 EcDH1_3074
EDJ: 
ECDH1ME8569_0523(arrD) ECDH1ME8569_1498(ydfQ) ECDH1ME8569_3216(chiA)
EIH: 
ECOK1_0540 ECOK1_1273 ECOK1_1437 ECOK1_2115 ECOK1_3757(chiA) ECOK1_4911
ENA: 
ECNA114_1247 ECNA114_3413(chiA)
ELU: 
UM146_10650 UM146_11460 UM146_16600
EUN: 
UMNK88_1738 UMNK88_2003 UMNK88_4100 UMNK88_915
ELW: 
ECW_m0298(lys) ECW_m0929 ECW_m1710(arrQ)
ELL: 
WFL_01445 WFL_04525 WFL_08390(arrQ)
ELC: 
i14_1313 i14_1397(ybcS) i14_3784(chiA)
ELD: 
i02_1313 i02_1397(ybcS) i02_3784(chiA)
ELP: 
P12B_c0752(ybcS) P12B_c1519(ydfQ) P12B_c3440(chiA)
EBL: 
ECD_00507(ybcS) ECD_01337(ydfQ) ECD_03189(chiA)
EBE: 
B21_00513(ybcS) B21_01346(ydfQ) B21_03140(chiA)
ELF: 
LF82_0302(chiA) LF82_2835(ydfQ) LF82_2836(ydfQ)
ECOA: 
APECO78_06240 APECO78_07470 APECO78_11580 APECO78_20480
EFE: 
EFER_2052(ybcS) EFER_2701(ybcS) EFER_4440(ydfQ)
EBT: 
EBL_c21900
STY: 
STY2044 STY3682(nucD) STY4620(nucD2)
STT: 
t3424(nucD) t4314(nucD)
STM: 
STM1028 STM2715.S
SEO: 
STM14_1451
SEV: 
STMMW_03721
SEM: 
STMDT12_C03650
SETU: 
STU288_12890
SPT: 
SPA2397(gp19) SPA2575(nucD)
SEK: 
SSPA2236 SSPA2398
SEI: 
SPC_1031 SPC_2723
SEC: 
SC0986(lycV) SC2614(lycV)
SEH: 
SeHA_C0394 SeHA_C1136
SHB: 
SU5_01661 SU5_0995
SEE: 
SNSL254_A1065 SNSL254_A1150 SNSL254_A2819 SNSL254_A4372
SEW: 
SeSA_A0629
SEA: 
SeAg_B2861
SED: 
SeD_A0631 SeD_A1402 SeD_A3043
SEG: 
SG1208
SET: 
SEN1145
SES: 
SARI_01479 SARI_02656
YPE: 
YPO2098
YPN: 
YPN_1570
YPP: 
YPDSF_1029
YPG: 
YpAngola_A2180
YPZ: 
YPZ3_1736
YPS: 
YPTB1755 YPTB1805
YPI: 
YpsIP31758_2236
YEN: 
YE1840 YE2334
YEP: 
YE105_C1365 YE105_C1816
YEY: 
Y11_12701
SFL: 
SF0691
SFX: 
S0733 S0944
SFV: 
SFV_0212 SFV_0279 SFV_0726(ybcS) SFV_2706
SFE: 
SFxv_0762
SSN: 
SSON_0733 SSON_2437 SSON_2783(ybcS)
SSJ: 
SSON53_03980 SSON53_10305 SSON53_14235 SSON53_16390 SSON53_20030
SBO: 
SBO_0765 SBO_1924
SBC: 
SbBS512_E0944 SbBS512_E1270 SbBS512_E1450
SDY: 
SDY_1394
PCT: 
PC1_0580 PC1_2648 PC1_3178
ETA: 
ETA_05770
EPY: 
EpC_05960
EBI: 
EbC_01110 EbC_10970 EbC_17010 EbC_26500 EbC_31900
PLU: 
plu3414
PAY: 
PAU_03122(gene0068) PAU_03330 PAU_03581(gene0097)
SGL: 
SG0728 SG0939 SG1161 SG1387 SG1559 SG1671 SG1681
ENT: 
Ent638_0795 Ent638_2248 Ent638_2609 Ent638_3494
ENC: 
ECL_00921 ECL_01319 ECL_03208 ECL_03572 ECL_04419
ENO: 
ECENHK_11950
ESC: 
Entcl_1137
EEC: 
EcWSU1_02428(arrD)
ENL: 
A3UG_12550
EAE: 
EAE_22350
EAR: 
ST548_p6211 ST548_p7665
ESA: 
ESA_01625 ESA_02747 ESA_03062
CSZ: 
CSSP291_07865
CTU: 
CTU_05120(15) CTU_32330 CTU_34260(arrD)
KPM: 
KPHS_12590 KPHS_17270 KPHS_22610
KPE: 
KPK_3373 KPK_4149
KPO: 
KPN2242_05025
KVA: 
Kvar_1790
KOX: 
KOX_05320 KOX_17680
CKO: 
CKO_01876
CRO: 
ROD_10411 ROD_44811 ROD_47111(lys)
SPE: 
Spro_0871 Spro_2036
SMW: 
SMWW4_v1c19270(rrrD)
PMR: 
PMI0491
HDE: 
HDEF_0409 HDEF_1007 HDEF_1459 HDEF_1675(F)
DDA: 
Dd703_3826
XBO: 
XBJ1_1202 XBJ1_1258 XBJ1_1387(ydfQ)
XNE: 
XNC1_2340
PAM: 
PANA_3151(nucD2)
PLF: 
PANA5342_1882
PAQ: 
PAGR_g1823 PAGR_g3121
PVA: 
Pvag_0285 Pvag_1702(lycV) Pvag_2694(nucD)
PAO: 
Pat9b_3427
RAH: 
Rahaq_0586 Rahaq_0722 Rahaq_1484 Rahaq_1797 Rahaq_3829 Rahaq_4527 Rahaq_4985
RAQ: 
Rahaq2_3928
RAA: 
Q7S_19490 Q7S_23186
HIT: 
NTHI1880
HIF: 
HIBPF00990
HIL: 
HICON_07040
HIU: 
HIB_03640
HAP: 
HAPS_0540 HAPS_0613
HPR: 
PARA_04070
HSO: 
HS_1388
HSM: 
HSM_0894 HSM_1160
APL: 
APL_0505
AAP: 
NT05HA_0490
GAN: 
UMN179_00231 UMN179_02494
XFA: 
XF0513 XF1564 XF1669 XF2314
XFT: 
PD0996(lycV) PD1113
XFM: 
Xfasm12_0912
XFN: 
XfasM23_1053 XfasM23_1178
XAC: 
XAC1063(p13)
FAU: 
Fraau_0988
VCJ: 
VCD_002176
VCO: 
VC0395_1046
VHA: 
VIBHAR_01975
PAP: 
PSPA7_0693 PSPA7_5063
PPG: 
PputGB1_3388
PAR: 
Psyc_1032
ACD: 
AOLE_06790
ABM: 
ABSDF0706 ABSDF1811
ABN: 
AB57_2671
SON: 
SO_0659
SDN: 
Sden_3256
SBL: 
Sbal_1293 Sbal_3605
SBM: 
Shew185_0749 Shew185_2082
SBN: 
Sbal195_0780 Sbal195_2129
SBP: 
Sbal223_0776
PAT: 
Patl_1492
GAG: 
Glaag_1510
CBU: 
CBU_1031
CBS: 
COXBURSA331_A0912
CBD: 
CBUD_1015
CBG: 
CbuG_0979
CBC: 
CbuK_0811
MCA: 
MCA2680
MMT: 
Metme_2283
NHL: 
Nhal_0995
CSA: 
Csal_1392
AHA: 
AHA_2050
CVI: 
CV_0727 CV_2611(slt)
LHK: 
LHK_01558 LHK_01752
RSO: 
RSc0883 RSc3192
RSL: 
RPSI07_0267
RPI: 
Rpic_2043
RPF: 
Rpic12D_1735
REH: 
H16_B1313
CNC: 
CNE_1c13600
BPM: 
BURPS1710b_1695
BPL: 
BURPS1106A_1421
BPD: 
BURPS668_A2335
BPR: 
GBP346_A2693
BPZ: 
BP1026B_I1122 BP1026B_I2093
BPQ: 
BPC006_I1169
BTE: 
BTH_I1920
BCJ: 
BCAM1918
BAM: 
Bamb_4258
BAC: 
BamMC406_4784
BMU: 
Bmul_1797 Bmul_2309 Bmul_3886
BMJ: 
BMULJ_00931 BMULJ_01441 BMULJ_04616
BPY: 
Bphyt_1185
BGL: 
bglu_1g12050 bglu_1g21300
BUG: 
BC1001_5883
BGE: 
BC1002_3186
BRH: 
RBRH_01186 RBRH_01189
BPT: 
Bpet1003
BAV: 
BAV1338
PUT: 
PT7_P033
AAV: 
Aave_1729
DIA: 
Dtpsy_3187
AAA: 
Acav_3500
DAC: 
Daci_4670
DEL: 
DelCs14_4064 DelCs14_4374
VAP: 
Vapar_2493
CTT: 
CtCNB1_2654 CtCNB1_3552
ADN: 
Alide_1277
ADK: 
Alide2_2043 Alide2_2054
RTA: 
Rta_33100
HAR: 
HEAR2266
MMS: 
mma_2188 mma_2728 mma_2788
NEU: 
NE2534
DSU: 
Dsui_1505
APP: 
CAP2UW1_0591
HPY: 
HP0339
ABU: 
Abu_1520
ANT: 
Arnit_1697
DDE: 
Dde_3421
RBE: 
RBE_0409 RBE_1085
RBO: 
A1I_01910 A1I_05700
RCO: 
RC1298
RFE: 
RF_0924
RRJ: 
RrIowa_1522
SMD: 
Smed_6523
RHI: 
NGR_c34310
RET: 
RHE_CH01113
REC: 
RHECIAT_CH0001188
RLE: 
RL3920
RLT: 
Rleg2_2404
LAS: 
CLIBASIA_04790
RPT: 
Rpal_3077
OCA: 
OCAR_6584
BHE: 
BH02950 BH09240 BH13940
BQU: 
BQ02630 BQ11590
BBK: 
BARBAKC583_0240 BARBAKC583_1057
BTR: 
Btr_0306 Btr_0315 Btr_0482 Btr_1119 Btr_2229 Btr_2265
BGR: 
Bgr_02920 Bgr_03280 Bgr_08530 Bgr_08650 Bgr_10230 Bgr_17720
BCD: 
BARCL_1169
AZC: 
AZC_2137
SNO: 
Snov_2810
MEX: 
Mext_1416
MEA: 
Mex_1p4010
MRD: 
Mrad2831_2642
MET: 
M446_5979
MPO: 
Mpop_1412 Mpop_1875
HDN: 
Hden_3113
PHL: 
KKY_731
CCS: 
CCNA_02255(spmX)
CAK: 
Caul_2612 Caul_3158
CSE: 
Cseg_2824
PZU: 
PHZ_c1283
SIT: 
TM1040_1305
RCP: 
RCAP_rcc00989 RCAP_rcc01406
JAN: 
Jann_2321
KVU: 
EIO_1251
HNE: 
HNE_1271
ACR: 
Acry_0875
GDJ: 
Gdia_0567
APT: 
APA01_19980
MAG: 
amb1525 amb3986
AZL: 
AZL_003440 AZL_b05450
PBR: 
PB2503_10484
PGV: 
SL003B_3788
BSUB: 
BEST7613_4767
SPH: 
MGAS10270_Spy0722(mur1-1) MGAS10270_Spy0723(mur1-2)
SPJ: 
MGAS2096_Spy0734(mur1-1) MGAS2096_Spy0735(mur1-2)
SPK: 
MGAS9429_Spy0718(mur1-1) MGAS9429_Spy0719(mur1-2) MGAS9429_Spy0849
SPR: 
spr1431(lytC)
LPL: 
lp_1138(acm1) lp_2645(acm2) lp_3093
LPJ: 
JDM1_2121(acm2)
LSA: 
LSA1788
LSL: 
LSL_0296 LSL_0304 LSL_0797 LSL_0805 LSL_1310
LFE: 
LAF_1820
OOE: 
OEOE_1199
CAC: 
CA_C0554(lyc)
CNO: 
NT01CX_2099
CBK: 
CLL_A2241
EHA: 
Ethha_2475
OVA: 
OBV_20240
RDN: 
HMPREF0733_10617
SEN: 
SACE_3764 SACE_7138
ACM: 
AciX9_1979
PGN: 
PGN_0055 PGN_1286
PRU: 
PRU_1883
CPI: 
Cpin_5913
PSN: 
Pedsa_0869
CMR: 
Cycma_0230
WVI: 
Weevi_0096
IPO: 
Ilyop_2031
SYN: 
slr0795
SYY: 
SYNGTS_2738(slr0795)
SYT: 
SYNGTI_2737(slr0795)
SYS: 
SYNPCCN_2736(slr0795)
SYQ: 
SYNPCCP_2736(slr0795)
SYC: 
syc0777_c
SYF: 
Synpcc7942_0756
SYG: 
sync_1433 sync_1864
SYX: 
SynWH7803_0779
MAR: 
MAE_60270
CYT: 
cce_0006
CYP: 
PCC8801_1543
ANA: 
alr1167
AVA: 
Ava_4421
PMF: 
P9303_18641
TER: 
Tery_4178 Tery_4180
CCH: 
Cag_0702
PPH: 
Ppha_0875
 » show all
Taxonomy
Reference
1  [PMID:4382801]
  Authors
Blake CC, Johnson LN, Mair GA, North AC, Phillips DC, Sarma VR.
  Title
Crystallographic studies of the activity of hen egg-white lysozyme.
  Journal
Proc. R. Soc. Lond. B. Biol. Sci. 167 (1967) 378-88.
  Organism
Gallus gallus [GN:gga]
Reference
2  [PMID:4382800]
  Authors
Blake CC, Mair GA, North AC, Phillips DC, Sarma VR.
  Title
On the conformation of the hen egg-white lysozyme molecule.
  Journal
Proc. R. Soc. Lond. B. Biol. Sci. 167 (1967) 365-77.
  Organism
Gallus gallus [GN:gga]
Reference
3
  Authors
Jolles, P.
  Title
Lysozyme.
  Journal
In: Boyer, P.D., Lardy, H. and Myrback, K. (Eds.), The Enzymes, 2nd ed., vol. 4, Academic Press, New York, 1960, p. 431-445.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
9001-63-2
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