an oxidized electron donor

a reduced electron donor

a deaminated amino group acceptor

an aminated amino group acceptor

Charged-LEU-tRNAs

LEU-tRNAs

a 2-oxo acid

an amino acid

an acyl-CoA

a carboxylate

an oxidized ferredoxin [iron-sulfur] cluster

a reduced ferredoxin [iron-sulfur] cluster

NAD(P)H

NAD(P)+

an L-tyrosyl-[tRNAtyr]

a tRNAtyr

(2Z,4Z)-2-hydroxy-5-carboxymuconate-6-semialdehyde

4α,14α-dimethyl-porifersta-8,25(27)-dienol

2-amino-4,5-dihydroxy-6-oxo-7-(phosphooxy)heptanoate

4-methylcyclohex-1,5-diene-1-carbonyl-CoA

isoshowacene

2-hydroxyhexadecanal

16-sinapoyloxypalmitate

3-methylquinolin-2-ol

(22R)-hydroxycholesterol

N-(2-methylpropyl)hydroxylamine

chloroeremomycin

3-hydroxy-3-methylbutanoate

2',3',4'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

2',3'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

2'-O-methyl-rhamnosyl tetracyclic spinosyn pseudoaglycone

rhamnosyl tetracyclic spinosyn pseudoaglycone

rhamnosyl tricyclic spinosyn pseudoaglycone

spinosyn tricyclic macrolactone

11-dehydro-15-oxo spinosyn macrolactone

15-oxo spinosyn macrolactone

spinosyn macrolactone

diethylamine N-oxide

triethylamine N-oxide

UDP-2-acetamido-2-deoxy-α-D-ribo-hex-3-uluronate

nitroxyl

trans,octacis-decaprenylphospho-β-D-arabinofuranose

1,3-dihydro-2H-imidazol-2-one

2-phenylethyl β-D-glucopyranoside

formyl hopane

ribosyl hopane

adenosyl hopane

(2Z)-2-hydroxypenta-2,4-dienoate

(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate

(2Z)-2,4-dihydroxypent-2-enoate

(2E,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA

(3R,5Z,8Z,11Z,14Z,17Z)-3-hydroxydocosapentaenoyl-CoA

(5Z,8Z,11Z,14Z,17Z)-3-oxodocosapentaenoyl-CoA

(+)-3'-hydroxylarreatricin

(+)-larreatricin

2-trans,4-trans-xanthoxin

succinate semialdehyde

pseudouridine

(2R,4S)-2-methyl-2,3,3,4-tetrahydroxytetrahydrofuran

(2R,4S)-2-methyl-2,4-dihydroxydihydrofuran-3-one

4-amino-2-methyl-5-pyrimidinemethanol

quinolinate

histidinal

histidinol

L-histidinol phosphate

imidazole acetol-phosphate

D-erythro-imidazole-glycerol-phosphate

2-keto-D-gluconate

5-formyl-3-hydroxy-2-methylpyridine-4-carboxylate

3-hydroxy-2-methylpyridine-4,5-dicarboxylate

3-hydroxy-2-methylpyridine-5-carboxylate

(2Z)-2-(acetamidomethylene)succinate

3'-ketosucrose

H₂O

salicyl alcohol

methylsalicylate

CO₂

2-isopropylmaleate

(2R,3S)-3-isopropylmalate

(2S)-2-isopropylmalate

2-oxovalerate

3-ethylmalate

4-methyl-2-oxopentanoate

(2S)-2-isopropyl-3-oxosuccinate

phosphoenolpyruvate

oxaloacetate

H₂

(S)-2-aceto-2-hydroxybutanoate

(S)-2-acetolactate

(R)-2,3-dihydroxy-3-methylpentanoate

α-D-glucopyranosyl-diphosphoundecaprenol

5-amino-1-(5-phospho-β-D-ribosyl)imidazole

5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate

N-(5-phosphoribosyl)-anthranilate

ethanolamine

γ-L-glutamyl 5-phosphate

N-acetyl-D-muramate 6-phosphate

1,6-anhydro-N-acetyl-β-muramate

N-acetyl-β-D-glucosamine-1,6-anhydro-N-acetyl-β-D-muramate

coproporphyrinogen III

(3R)-3-hydroxy-2-oxo-4 phosphooxybutanoate

(2S)-2-amino-3-oxo-4-phosphooxybutanoate

3-amino-1-hydroxyacetone 1-phosphate

4-phosphooxy-L-threonine

(2S,3S)-2,3-dihydroxy-2,3-dihydrobenzoate

isochorismate

dihydroxyacetone

N²-formyl-N¹-(5-phospho-β-D-ribosyl)glycinamide

N¹-(5-phospho-β-D-ribosyl)glycinamide

5-phospho-β-D-ribosylamine

carbonic acid

3-methyl-2-oxobutanoate

3-deoxy-D-arabino-heptulosonate 7-phosphate

5'-phosphoribosyl-4-(N-succinocarboxamide)-5-aminoimidazole

(4,5-dihydro-5-oxofuran-2-yl)-acetate

(2-carboxy-2,5-dihydro-5-oxofuran-2-yl)-acetate

thiamine diphosphate

3-phosphooxypyruvate

(R)-5-phosphomevalonate

(R)-mevalonate

lipoamide

dihydrolipoamide

4-pyridoxolactone

hydrogen peroxide

5-aminolevulinate

(S)-4-amino-5-oxopentanoate

preuroporphyrinogen

porphobilinogen

L-canavanine

canavaninosuccinate

L-arginino-succinate

6-phospho D-glucono-1,5-lactone

D-gluconate 6-phosphate

2-dehydro-6-phospho-D-gluconate

oxalosuccinate

carbamoyl phosphate

1-piperideine 6-carboxylate

ammonia

(2S,4S)-2-methyl-2,4-dihydroxydihydrofuran-3-one

(2S,4S)-2-methyl-2,3,3,4-tetrahydroxytetrahydrofuran

4-guanidinobutyramide

2-dehydro-3-deoxy-D-gluconate

2-dehydro-3-deoxy-D-gluconate 6-phosphate

prephenate

(L-threonylcarbamoyl)adenylate

glycerone phosphate

adenosine 3',5'-bisphosphate

citrate

DNA without lesion

2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one

4-hydroxy-2-nonenal

D-glycero-β-D-manno-heptose 1-phosphate

D-glycero-β-D-manno-heptose 1,7-bisphosphate

anthranilate

3-dehydroshikimate

shikimate

shikimate 3-phosphate

isopentenyl diphosphate

1,4-dihydroxy-2-naphthoate

S-ribosyl-L-homocysteine

5-(methylsulfanyl)-α-D-ribose

S-methyl-5'-thioadenosine

4-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine

4-amino-2-methyl-5-(phosphooxymethyl)pyrimidine

urea

(indol-3-yl)acetamide

4-guanidinobutanoate

propionamide

acrylate

acrylamide

glutathionylspermidine

hydroxypyruvate

S-adenosyl 3-(methylsulfanyl)propylamine

4-(β-D-ribofuranosyl)aminobenzene-5'-phosphate

phosphite

2-(formamido)-N¹-(5-phospho-β-D-ribosyl)acetamidine

N-succinyl-L,L-2,6-diaminopimelate

nicotinate adenine dinucleotide

β-nicotinate D-ribonucleotide

lipid A disaccharide (E. coli)

lipid X

thiamine phosphate

autoinducer 2

3-deoxy-D-manno-octulosonate 8-phosphate

O-acetyl-L-serine

hydrogen selenide

glycolate

2-phosphoglycolate

3-dehydroquinate

(S)-3-methyl-2-oxopentanoate

3-deoxy-α-D-manno-2-octulosonate

(R)-mevalonate diphosphate

N-Formyl-L-kynurenine

pseudouridine 5'-phosphate

S-acetyldihydrolipoamide

(S)-2-amino-6-oxohexanoate

(lipoyl)adenylate

orotidine 5'-phosphate

2-aminomalonate semialdehyde

α-D-glucosamine 1-phosphate

O-ureido-L-homoserine

D-galactosamine-6-phosphate

N-acetyl-D-galactosamine 6-phosphate

5-enolpyruvoyl-shikimate 3-phosphate

(S)-dihydroorotate

5-amino-6-(D-ribitylamino)uracil

1-deoxy-L-glycero-tetrulose 4-phosphate

(R)-4'-phosphopantothenoyl-L-cysteine

(R)-4'-phosphopantothenate

4'-phosphopantetheine

acetyl phosphate

tartronate semialdehyde

prenyl diphosphate

norspermidine

carboxynorspermidine

N-succinyl-2-amino-6-ketopimelate

(S)-2,3,4,5-tetrahydrodipicolinate

S-formylglutathione

2-(α-hydroxyethyl)thiamine diphosphate

lipid IV_A

2'-(5''-triphospho-α-D-ribosyl)-3'-dephospho-CoA

1,5-anhydro-D-fructose

carbon monoxide

acetoacetate

5-amino-6-(5-phospho-D-ribosylamino)uracil

5-amino-6-(5-phospho-D-ribitylamino)uracil

2-iminoacetate

creatinine

N⁵-carboxyaminoimidazole ribonucleotide

(S)-ureidoglycolate

2-amino-5-formylamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one

choline

agmatine

putrescine

spermidine

spermine

N-acetylputrescine

N¹-acetylspermine

N¹-acetylspermidine

(2Z)-2-aminobut-2-enoate

2-aminoprop-2-enoate

2-iminopropanoate

S-(hydroxymethyl)glutathione

dimethyl sulfide

glutathione

methanethiol

2-(2-carboxy-4-methylthiazol-5-yl)ethyl phosphate

2-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate

4-methyl-5-(2-phosphooxyethyl)thiazole

5-(2-hydroxyethyl)-4-methylthiazole

(R)-S-lactoylglutathione

hydrogencarbonate

thiosulfate

selenide

superoxide

chloride

phosphonate

phosphate

diphosphate

triphosphate

Fe³⁺

H⁺

ammonium

Fe²⁺

Zn²⁺

Mg²⁺

Mn²⁺

trimethyl sulfonium

L-α-amino-ε-keto-pimelate

D-alanine

D-methionine

D-aspartate

D-glutamate

L-tryptophan

L-tyrosine

L-histidine

L-citrulline

L-methionine

L-cysteine

L-lysine

L-glutamine

L-serine

L-arginine

L-glutamate

L-alanine

glycine

L-proline

L-aspartate

L-threonine

L-asparagine

L-valine

L-leucine

L-isoleucine

L-homocysteine

O-succinyl-L-homoserine

L-glutamate-5-semialdehyde

S-adenosyl-L-methionine

L-aspartate 4-semialdehyde

S-adenosyl-L-homocysteine

L-homoserine

O-phospho-L-homoserine

S-sulfo-L-cysteine

L-canaline

L-ornithine

S-(4-hydroxy-nonenal-3-yl)-L-cysteine

meso-diaminopimelate

L-selenocysteine

L,L-diaminopimelate

L-cystathionine

L-aspartyl-4-phosphate

N-carbamoyl-L-aspartate

L-selenomethionine

seleno-L-homocysteine

L-saccharopine

sarcosine

O-acetyl-L-homoserine

3-phospho-L-serine

creatine

2'-deoxyadenosine

dGMP

dAMP

AMP

ADP

ATP

GDP

GTP

IDP

ITP

XMP

IMP

5'-deoxyadenosine

adenylo-succinate

GMP

hypoxanthine

cyclic-AMP

2'-deoxyguanosine

dGTP

dITP

dIDP

dATP

dADP

dGDP

1-(5-phospho-β-D-ribosyl)-AMP

1-(5-phospho-β-D-ribosyl)-ATP

dIMP

XTP

ppGpp

pppGpp

guanine

adenine

uracil

preQ₁

dCDP

dUDP

dTDP

dUTP

dCTP

dTTP

dUMP

dTMP

dCMP

2-methylsulfanyl-N⁶-dimethylallyladenosine³⁷ in tRNA

2-sulfanyl-N⁶-dimethylallyladenosine³⁷ in tRNA

β-nicotinamide D-ribonucleotide

UMP

CMP

UDP

CDP

UTP

CTP

NADH

NADPH

NAD⁺

NADP⁺

UDP-α-D-glucose

ADP-α-D-glucose

GDP-α-D-glucose

UDP-α-D-galactofuranose

UDP-α-D-galactose

UDP-N-acetyl-α-D-glucosamine-enolpyruvate

UDP-N-acetyl-α-D-muramate

UDP-3-O-(3-hydroxymyristoyl)-α-D-glucosamine

UDP-3-O-[(3R)-3-hydroxymyristoyl]-N-acetyl-α-D-glucosamine

UDP-N-acetyl-α-D-muramoyl-L-alanine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-D-glutamate

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysine

UDP-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanine

UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimelate

UDP-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanine

UDP-N-acetyl-α-D-glucosamine

ADP-D-ribose

GDP-α-D-mannose

CMP-3-deoxy-β-D-manno-octulosonate

guanosine

adenosine

2'-deoxyuridine

2'-deoxycytidine

thymidine

orotate

(S)-1-pyrroline-5-carboxylate

(7,8-dihydropterin-6-yl)methyl diphosphate

6-(hydroxymethyl)-7,8-dihydropterin

7,8-dihydroneopterin 3'-triphosphate

7,8-dihydroneopterin 2',3'-cyclic phosphate

7,8-dihydropterin-6-ylmethyl-4-(β-D-ribofuranosyl)aminobenzene 5'-phosphate

7,8-dihydromonapterin

7,8-dihydroneopterin

7,8-dihydroneopterin 3'-phosphate

7,8-dihydropteroate

7,8-dihydrofolate monoglutamate

tetrahydropteroyl tri-L-glutamate

5,6,7,8-tetrahydrofolate

5,10-methylenetetrahydropteroyl mono-L-glutamate

10-formyl-tetrahydrofolate mono-L-glutamate

5-methyltetrahydropteroyl tri-L-glutamate

5-methyltetrahydropteroyl mono-L-glutamate

(6S)-5-formyl-tetrahydrofolate mono-L-glutamate

6,7-dimethyl-8-(1-D-ribityl)lumazine

FADH₂

FMN

riboflavin

FAD

2,4-dinitrophenyl-S-glutathione

1-chloro-2,4-dinitrobenzene

6-hydroxy-2-cyclohexen-one-carboxylate

salicyl-6-hydroxy-2-cyclohexene-on-oyl

4-hydroxybenzoate

3-hexaprenyl-4-hydroxybenzoate

protocatechuate

2,3-dihydroxybenzoate

3-demethylubiquinol-7

3-demethylubiquinol-10

3-demethylubiquinol-9

3-demethylubiquinol-8

menaquinol-8

ubiquinol-7

ubiquinol-10

ubiquinol-9

ubiquinol-8

demethylmenaquinol-8

4-methylphenol

salicylate

4-aminobenzoate

indole

(1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate

all-trans-retinyl palmitate

all-trans-retinol

trans,octacis-decaprenyl phosphate

(2E,6E)-farnesyl diphosphate

mono-trans,octa-cis-decaprenyl diphosphate

3-decaprenyl-4-hydroxybenzoate

3-heptaprenyl-4-hydroxybenzoate

3-octaprenyl-4-hydroxybenzoate

3-nonaprenyl-4-hydroxybenzoate

di-trans,octa-cis-undecaprenyl phosphate

all-trans-octaprenyl diphosphate

all-trans-decaprenyl diphosphate

all-trans-heptaprenyl diphosphate

all-trans-hexaprenyl diphosphate

all-trans-nonaprenyl diphosphate

di-trans,octa-cis-undecaprenyl diphosphate

phosphatidylglycerophosphate (1-octadecenoyl(9Z), 2-palmitoyl)

1-oleoyl-2-palmitoyl-phosphatidylglycerol

D-glucono-1,5-lactone

acetyl-CoA

malonyl-CoA

(3R,11Z,14Z,17Z)-3-hydroxyicosatrienoyl-CoA

(11Z,14Z,17Z)-3-oxoicosatrienoyl-CoA

succinyl-CoA

(S)-3-hydroxy-3-methylglutaryl-CoA

3'-dephospho-CoA

palmitoyl-CoA

acetoacetyl-CoA

(S)-malyl-CoA

D-altronate

D-mannonate

D-gluconate

1-(β-D ribofuranosyl)nicotinamide

aldehydo-D-galacturonate

maltotriose

sucrose

maltotetraose

maltohexaose

maltoheptaose

maltopentaose

glycerol

D-mannitol

D-sorbitol 6-phosphate

1,5-anhydro-D-mannitol

aldehydo-D-ribose

β-D-ribofuranose

α-D-ribofuranose

β-D-mannopyranose

α-D-glucopyranose

β-D-glucopyranose

β-D-galactopyranose

α-D-galactopyranose

aldehydo-D-mannose

D-glyceraldehyde

glycolaldehyde

keto-D-fructose

β-D-fructofuranose

N-acetylmuramate

N-acetyl-α-D-muramoyl-L-alanine(1-)

N-acetyl-α-D-glucosamine 1-phosphate

N-acetyl-β-D-glucosamine

3-dehydro-D-glucopyranose

1-O-acetyl-α-maltose

decaprenyl-diphospho-N-acetylmuramoyl-pentapeptide

D-glyceraldehyde 3-phosphate

α-D-glucopyranose 1-phosphate

undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-L-lysyl- D-alanyl-D-alanine

undecaprenyldiphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

a peptidoglycan dimer (mycobacteria)

a peptidoglycan dimer (E. faeciums)

a peptidoglycan dimer (S. aureus)

undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-γ-D-glutamyl-L-lysyl- D-alanine

decaprenyl-pyrophosphoryl-(N-acetylglucosamine)-N-acetylmuramyl-(pentapeptide)

a peptidoglycan dimer (meso-diaminopimelate containing)

a peptidoglycan with D,D cross-links (meso-diaminopimelate containing)

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetyl-β-D-glucosaminyl)muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanine

ditrans,octacis-undecaprenyldiphospho-[(N-acetyl-β-D-glucosaminyl)-(1,4)-]-N-acetyl-α-D-muramoyl-L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine

GlcNAc-1,6-anhMurNAc-L-Ala-γ-D-Glu-DAP-D-Ala

a peptidoglycan with L,D cross-links (mycobacteria)

a peptidoglycan with D,D cross-links (mycobacteria)

a peptidoglycan tetramer with a D,D cross-link (Enterococcus faecium)

a peptidoglycan with D,D cross-link (S. aureus)

sucrose 6^F-phosphate

sucrose 6^G-phosphate

5-phospho-α-D-ribose 1-diphosphate

D-erythrose 4-phosphate

D-sedoheptulose 7-phosphate

1-(o-carboxyphenylamino)-1'-deoxyribulose 5'-phosphate

4-phospho-D-erythronate

β-D-fructofuranose 6-phosphate

β-D-fructose 1,6-bisphosphate

D-fructose 6-phosphate

D-tagatofuranose 6-phosphate

D-tagatofuranose 1,6-bisphosphate

α-D-glucose 6-phosphate

β-D-glucose 6-phosphate

α-D-mannopyranose 6-phosphate

β-D-mannopyranose 6-phosphate

D-xylulose 5-phosphate

1-deoxy-D-xylulose 5-phosphate

D-ribulose 5-phosphate

aldehydo-D-arabinose 5-phosphate

α-D-ribose-1-phosphate

β-D-glucopyranose 1-phosphate

β-D-fructofuranose 1-phosphate

α-D-galactose 1-phosphate

α-D-mannose 1-phosphate

(S)-lactaldehyde

formaldehyde

acetaldehyde

methylglyoxal

diacetyl

leukotriene-E4

leukotriene-D4

palmitate

acetate

5-chloro-5-deoxy-D-ribonate

allantoate

D-tagaturonate

3-carboxy-cis,cis-muconate

cis-aconitate

cis-2-methylaconitate

(2R,3S)-2-methylisocitrate

D-threo-isocitrate

pyruvate

2-oxobutanoate

2-oxoglutarate

glyoxylate

5-chloro-4-hydroxy-2-oxopentanoate

3-oxoadipate

formate

propanoate

(R)-lactate

(S)-lactate

(R)-glycerate

chorismate

succinate

fumarate

(S)-malate

(4S)-4-hydroxy-2-oxoglutarate

L-alanyl-γ-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanine

D-alanyl-D-alanine

γ-L-glutamyl-L-cysteine

L-alanyl-γ-D-glutamyl-meso-diaminopimelate

nicotinamide

(S)-(+)-allantoin

phosphoribulosylformimino-AICAR-phosphate

1-(5-phospho-β-D-ribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxamide

5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide

5-formamido-1-(5-phospho-D-ribosyl)-imidazole-4-carboxamide

5-amino-4-imidazolecarboxyamide

acetamide

thiamine

nicotinate

4-pyridoxate

pyridoxal

pyridoxal 5'-phosphate

pyridoxamine 5'-phosphate

pyridoxine 5'-phosphate

pyridoxine

pyridoxamine

(R)-NADHX

(S)-NADHX

(indol-3-yl)acetate

methyl (indol-3-yl)acetate

coenzyme A

(R)-lipoate

ethanol

methanol

myo-inositol

phytate

D-myo-inositol (1,2,3,4,5)-pentakisphosphate

1D-myo-inositol 1-monophosphate

1D-myo-inositol 3-monophosphate

glycerophosphoglycerol

glycerophosphoserine

sn-glycero-3-phosphoethanolamine

acrylonitrile

(indole-3-yl)acetonitrile

preQ₀

2-iminosuccinate

2-iminobutanoate

5,10-methenyltetrahydrofolate mono-L-glutamate

nitric oxide

S-(4-hydroxy-nonenal-3-yl)-L-cysteinylglycine

α-D-glucosamine 6-phosphate

(2R)-2,3-dihydroxy-3-methylbutanoate

3-phospho-D-glyceroyl-phosphate

2,3-diphospho-D-glycerate

3-phospho-D-glycerate

2-phospho-D-glycerate

sn-glycerol 3-phosphate

oxygen

hydrogen sulfide

magnesium-protoporphyrin IX 13-monomethyl ester

protoporphyrinogen IX

protoporphyrin IX

uroporphyrinogen-III

coproporphyrinogen I

uroporphyrinogen-I

Mg-protoporphyrin

protoheme

protochlorophyllide a

chlorophyllide a

3,8-divinyl protochlorophyllide a

nitrous oxide

N₂

13¹-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester

13¹-oxo-magnesium-protoporphyrin IX 13-monomethyl ester

DNA with lesion

(glutathion-S-yl)-4-hydroxy-2-nonenal