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TaxTree of Organism Homarus americanus
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EC NUMBER 
COMMENTARY 
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PATHWAY
BRENDA Link
KEGG Link
MetaCyc Link
(S)-lactate fermentation to propanoate, acetate and hydrogen
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PWY-8086
(S)-reticuline biosynthesis I
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PWY-3581
(S)-reticuline biosynthesis II
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PWY-6133
1,3-propanediol biosynthesis (engineered)
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PWY-7385
1,5-anhydrofructose degradation
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PWY-6992
2-oxoglutarate decarboxylation to succinyl-CoA
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PWY-5084
2-oxoisovalerate decarboxylation to isobutanoyl-CoA
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PWY-5046
4-hydroxy-2-nonenal detoxification
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PWY-7112
acetone degradation I (to methylglyoxal)
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PWY-5451
acetone degradation III (to propane-1,2-diol)
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PWY-7466
aerobic respiration I (cytochrome c)
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PWY-3781
aerobic respiration III (alternative oxidase pathway)
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PWY-4302
Amaryllidacea alkaloids biosynthesis
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PWY-7826
amygdalin and prunasin degradation
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PWY-6011
anaerobic energy metabolism (invertebrates, cytosol)
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PWY-7383
apratoxin A biosynthesis
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PWY-8361
ascorbate glutathione cycle
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PWY-2261
ascorbate recycling (cytosolic)
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PWY-6370
ATP biosynthesis
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PWY-7980
baicalein degradation (hydrogen peroxide detoxification)
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PWY-7214
beta-carboline biosynthesis
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PWY-5877
beta-D-glucuronide and D-glucuronate degradation
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PWY-7247
betalamic acid biosynthesis
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PWY-5394
betanidin degradation
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PWY-5461
betaxanthin biosynthesis
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PWY-5426
betaxanthin biosynthesis (via dopamine)
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PWY-5403
Bifidobacterium shunt
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P124-PWY
bupropion degradation
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PWY66-241
C4 photosynthetic carbon assimilation cycle, NAD-ME type
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PWY-7115
C4 photosynthetic carbon assimilation cycle, PEPCK type
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PWY-7117
Calvin-Benson-Bassham cycle
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CALVIN-PWY
camalexin biosynthesis
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CAMALEXIN-SYN
catecholamine biosynthesis
cellulose degradation II (fungi)
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PWY-6788
chitin degradation I (archaea)
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PWY-6855
chitin degradation II (Vibrio)
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PWY-6902
chitin degradation III (Serratia)
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PWY-7822
chorismate biosynthesis from 3-dehydroquinate
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PWY-6163
coenzyme B biosynthesis
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P241-PWY
creatine phosphate biosynthesis
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PWY-6158
curacin A biosynthesis
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PWY-8358
cytosolic NADPH production (yeast)
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PWY-7268
diethylphosphate degradation
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PWY-5491
Entner-Doudoroff pathway I
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PWY-8004
ethene biosynthesis V (engineered)
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PWY-7124
Fe(II) oxidation
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PWY-6692
FeMo cofactor biosynthesis
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PWY-7710
ferrichrome A biosynthesis
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PWY-7571
firefly bioluminescence
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PWY-7913
formaldehyde assimilation II (assimilatory RuMP Cycle)
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PWY-1861
formaldehyde assimilation III (dihydroxyacetone cycle)
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P185-PWY
formaldehyde oxidation I
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RUMP-PWY
GDP-alpha-D-glucose biosynthesis
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PWY-5661
gliotoxin biosynthesis
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PWY-7533
gluconeogenesis I
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GLUCONEO-PWY
gluconeogenesis II (Methanobacterium thermoautotrophicum)
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PWY-6142
gluconeogenesis III
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PWY66-399
glucose and glucose-1-phosphate degradation
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GLUCOSE1PMETAB-PWY
glucose degradation (oxidative)
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DHGLUCONATE-PYR-CAT-PWY
glutathione-mediated detoxification I
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PWY-4061
glutathione-mediated detoxification II
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PWY-6842
glycerol degradation to butanol
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PWY-7003
glycine betaine degradation I
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PWY-3661
glycine betaine degradation II (mammalian)
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PWY-3661-1
glycine biosynthesis II
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GLYCINE-SYN2-PWY
glycine cleavage
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GLYCLEAV-PWY
glycogen degradation I
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GLYCOCAT-PWY
glycogen degradation II
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PWY-5941
glycolysis I (from glucose 6-phosphate)
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GLYCOLYSIS
glycolysis II (from fructose 6-phosphate)
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PWY-5484
glycolysis III (from glucose)
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ANAGLYCOLYSIS-PWY
glycolysis IV
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PWY-1042
glycolysis V (Pyrococcus)
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P341-PWY
glyoxylate cycle
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GLYOXYLATE-BYPASS
heterolactic fermentation
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P122-PWY
homocysteine and cysteine interconversion
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PWY-801
hydrogen sulfide biosynthesis II (mammalian)
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PWY66-426
hydroxycinnamic acid serotonin amides biosynthesis
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PWY-5473
hydroxycinnamic acid tyramine amides biosynthesis
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PWY-5474
indole glucosinolate activation (intact plant cell)
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PWYQT-4477
indole-3-acetate biosynthesis II
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PWY-581
isoprene biosynthesis II (engineered)
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PWY-7391
justicidin B biosynthesis
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PWY-6824
juvenile hormone III biosynthesis I
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PWY-6575
juvenile hormone III biosynthesis II
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PWY-6650
ketogenesis
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PWY66-367
L-alanine biosynthesis II
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ALANINE-SYN2-PWY
L-alanine degradation II (to D-lactate)
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ALACAT2-PWY
L-alanine degradation III
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ALANINE-DEG3-PWY
L-alanine degradation V (oxidative Stickland reaction)
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PWY-8189
L-alanine degradation VI (reductive Stickland reaction)
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PWY-8188
L-cysteine biosynthesis III (from L-homocysteine)
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HOMOCYSDEGR-PWY
L-dopa and L-dopachrome biosynthesis
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PWY-6481
L-dopa degradation II (bacterial)
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PWY-8110
L-histidine degradation V
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PWY-5031
L-lysine biosynthesis IV
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LYSINE-AMINOAD-PWY
L-lysine biosynthesis V
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PWY-3081
L-methionine salvage from L-homocysteine
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ADENOSYLHOMOCYSCAT-PWY
L-phenylalanine degradation IV (mammalian, via side chain)
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PWY-6318
L-serine biosynthesis I
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SERSYN-PWY
L-tryptophan degradation VI (via tryptamine)
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PWY-3181
L-tryptophan degradation X (mammalian, via tryptamine)
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PWY-6307
luteolin triglucuronide degradation
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PWY-7445
matairesinol biosynthesis
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PWY-5466
melatonin degradation I
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PWY-6398
methanofuran biosynthesis
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PWY-5254
methylaspartate cycle
mevalonate pathway I (eukaryotes and bacteria)
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PWY-922
mevalonate pathway II (haloarchaea)
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PWY-6174
mevalonate pathway III (Thermoplasma)
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PWY-7524
mevalonate pathway IV (archaea)
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PWY-8125
mixed acid fermentation
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FERMENTATION-PWY
NAD(P)/NADPH interconversion
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PWY-5083
NADH to cytochrome bd oxidase electron transfer I
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PWY0-1334
NADH to cytochrome bo oxidase electron transfer I
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PWY0-1335
neopentalenoketolactone and pentalenate biosynthesis
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PWY-6919
nicotine degradation IV
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PWY66-201
nicotine degradation V
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PWY66-221
nitric oxide biosynthesis II (mammals)
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PWY-4983
nitrogen remobilization from senescing leaves
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PWY-6549
nocardicin A biosynthesis
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PWY-7797
o-diquinones biosynthesis
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PWY-6752
octopamine biosynthesis
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PWY-7297
oleandomycin activation/inactivation
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PWY-6972
partial TCA cycle (obligate autotrophs)
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PWY-5913
pentachlorophenol degradation
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PCPDEG-PWY
pentose phosphate pathway (non-oxidative branch) II
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PWY-8178
pentose phosphate pathway (oxidative branch) I
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OXIDATIVEPENT-PWY
phenolic malonylglucosides biosynthesis
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PWY-6930
phenylethanol biosynthesis
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PWY-5751
pheomelanin biosynthesis
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PWY-7917
phosphate acquisition
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PWY-6348
phospholipid remodeling (phosphatidylethanolamine, yeast)
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PWY-7409
psilocybin biosynthesis
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PWY-7936
pyruvate decarboxylation to acetyl CoA I
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PYRUVDEHYD-PWY
pyruvate fermentation to (S)-lactate
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PWY-5481
retinol biosynthesis
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PWY-6857
rosmarinic acid biosynthesis II
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PWY-5049
salidroside biosynthesis
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PWY-6802
secologanin and strictosidine biosynthesis
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PWY-5290
sedoheptulose bisphosphate bypass
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PWY0-1517
serotonin and melatonin biosynthesis
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PWY-6030
sesamin biosynthesis
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PWY-5469
starch degradation III
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PWY-6731
starch degradation V
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PWY-6737
sucrose biosynthesis I (from photosynthesis)
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SUCSYN-PWY
sucrose biosynthesis II
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PWY-7238
sucrose degradation III (sucrose invertase)
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PWY-621
sucrose degradation V (sucrose alpha-glucosidase)
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PWY66-373
superpathway of glucose and xylose degradation
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PWY-6901
superpathway of glycolysis and the Entner-Doudoroff pathway
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GLYCOLYSIS-E-D
taurine biosynthesis III
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PWY-8359
TCA cycle I (prokaryotic)
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TCA
TCA cycle II (plants and fungi)
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PWY-5690
TCA cycle III (animals)
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PWY66-398
TCA cycle IV (2-oxoglutarate decarboxylase)
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P105-PWY
TCA cycle V (2-oxoglutarate synthase)
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PWY-6969
TCA cycle VI (Helicobacter)
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REDCITCYC
TCA cycle VII (acetate-producers)
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PWY-7254
trehalose degradation I (low osmolarity)
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TREDEGLOW-PWY
trehalose degradation II (cytosolic)
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PWY0-1182
trehalose degradation IV
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PWY-2722
trehalose degradation V
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PWY-2723
triacylglycerol degradation
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LIPAS-PWY
UDP-N-acetyl-D-galactosamine biosynthesis II
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PWY-5514
UDP-N-acetyl-D-glucosamine biosynthesis II
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UDPNACETYLGALSYN-PWY
vanillin biosynthesis I
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PWY-5665
xanthommatin biosynthesis
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PWY-8249
catecholamine biosynthesis
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PWY66-301
methylaspartate cycle
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PWY-6728
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ORGANISM
COMMENTARY
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
lobster, 2 enzyme forms: a soluble and a membrane-bound enzyme
SwissProt
lobster, 2 enzyme forms: a soluble isozyme HMGR1 and a membrane-bound isozyme HMGR2
SwissProt
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SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
SOURCE
additional information
very low content in other tissues, higher enzyme activity in male organisms than in female, tissue distribution overview
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LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY
GeneOntology No.
LITERATURE
SOURCE
bound, isozyme HMGR2, about 25% of total enzyme content
LINKS TO OTHER DATABASES (specific for Homarus americanus)
SILVA: 16S/18S rRNA, 23S/28S rRNA
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Release 2026.1 (March 2026)
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