Substance | Relationship Strength | Studies | Trials | Classes | Roles |
aminolevulinic acid Aminolevulinic Acid: A compound produced from succinyl-CoA and GLYCINE as an intermediate in heme synthesis. It is used as a PHOTOCHEMOTHERAPY for actinic KERATOSIS.. 5-aminolevulinic acid : The simplest delta-amino acid in which the hydrogens at the gamma position are replaced by an oxo group. It is metabolised to protoporphyrin IX, a photoactive compound which accumulates in the skin. Used (in the form of the hydrochloride salt)in combination with blue light illumination for the treatment of minimally to moderately thick actinic keratosis of the face or scalp. | 4.82 | 6 | 0 | 4-oxo monocarboxylic acid; amino acid zwitterion; delta-amino acid | antineoplastic agent; dermatologic drug; Escherichia coli metabolite; human metabolite; mouse metabolite; photosensitizing agent; plant metabolite; prodrug; Saccharomyces cerevisiae metabolite |
nickel Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.. nickel ion : A nickel atom having a net electric charge.. nickel atom : Chemical element (nickel group element atom) with atomic number 28. | 3.06 | 1 | 0 | metal allergen; nickel group element atom | epitope; micronutrient |
porphobilinogen [no description available] | 2.36 | 2 | 0 | aralkylamino compound; dicarboxylic acid; pyrroles | Escherichia coli metabolite; metabolite; mouse metabolite |
uroporphyrinogen iii Uroporphyrinogens: Porphyrinogens which are intermediates in heme biosynthesis. They have four acetic acid and four propionic acid side chains attached to the pyrrole rings. Uroporphyrinogen I and III are formed from polypyrryl methane in the presence of uroporphyrinogen III cosynthetase and uroporphyrin I synthetase, respectively. They can yield uroporphyrins by autooxidation or coproporphyrinogens by decarboxylation. | 3.06 | 5 | 0 | uroporphyrinogen | Escherichia coli metabolite; mouse metabolite |
pyrroles 1H-pyrrole : A tautomer of pyrrole that has the double bonds at positions 2 and 4.. pyrrole : A five-membered monocyclic heteroarene comprising one NH and four CH units which forms the parent compound of the pyrrole group of compounds. Its five-membered ring structure has three tautomers. A 'closed class'.. azole : Any monocyclic heteroarene consisting of a five-membered ring containing nitrogen. Azoles can also contain one or more other non-carbon atoms, such as nitrogen, sulfur or oxygen. | 1.95 | 1 | 0 | pyrrole; secondary amine | |
phenyl acetate phenyl acetate: The ester formed between phenol and acetic acid. Don't confuse with phenylacetic acid derivatives listed under PHENYLACETATES.. phenyl acetate : An acetate ester obtained by the formal condensation of phenol with acetic acid. | 1.96 | 1 | 0 | benzenes; phenyl acetates | |
cobalt Cobalt: A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.. cobalt(1+) : A monovalent inorganic cation obtained from cobalt.. cobalt atom : A cobalt group element atom that has atomic number 27. | 3.8 | 3 | 0 | cobalt group element atom; metal allergen | micronutrient |
dyphylline hydrogenobyrinic acid: structure given in first source | 3.1 | 1 | 0 | | |
bilirubin [no description available] | 3.06 | 1 | 0 | biladienes; dicarboxylic acid | antioxidant; human metabolite; mouse metabolite |
15,23-dihydrosirohydrochlorin 15,23-dihydrosirohydrochlorin: structure given in first source. precorrin-2 : The second intermediate in the biosynthesis of vitamin B12 from uroporphyrinogen III, in which methyl groups have been introduced at positions 2 and 7 of the tetrapyrrole framework. | 1.97 | 1 | 0 | | |
biliverdine [no description available] | 3.06 | 1 | 0 | | |
corrin corrin : A tetrapyrrole fundamental parent that is the core macrocycle of vitamin B12. | 2.48 | 2 | 0 | | |
bacteriochlorophylls Bacteriochlorophylls: Pyrrole containing pigments found in photosynthetic bacteria. | 1.96 | 1 | 0 | | |
protochlorophyll protochlorophyll: RN given refers to protochlorophyll | 3.06 | 1 | 0 | | |
chlorophyll a Chlorophyll: Porphyrin derivatives containing magnesium that act to convert light energy in photosynthetic organisms.. chlorophyll : A family of magnesium porphyrins, defined by the presence of a fifth ring beyond the four pyrrole-like rings. The rings can have various side chains which usually include a long phytol chain. | 3.46 | 2 | 0 | chlorophyll; methyl ester | cofactor |
cobyric acid [no description available] | 3.18 | 1 | 0 | cobalt-corrinoid hexaamide | |
s-adenosylmethionine (R)-S-adenosyl-L-methionine : An S-adenosyl-L-methionine that has R-configuration.. S-adenosyl-L-methionine zwitterion : A zwitterionic tautomer of S-adenosyl-L-methionine arising from shift of the proton from the carboxy group to the amino group.. (R)-S-adenosyl-L-methionine zwitterion : An S-adenosyl-L-methionine zwitterion that has R-configuration; major species at pH 7.3.. (S)-S-adenosyl-L-methionine zwitterion : An S-adenosyl-L-methionine zwitterion that has S-configuration; major species at pH 7.3.. S-adenosyl-L-methionine : A sulfonium compound that is the S-adenosyl derivative of L-methionine. It is an intermediate in the metabolic pathway of methionine. | 2.36 | 2 | 0 | organic cation; sulfonium compound | coenzyme; cofactor; human metabolite; micronutrient; Mycoplasma genitalium metabolite; nutraceutical; Saccharomyces cerevisiae metabolite |
heme Heme: The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins.. ferroheme : Any iron(II)--porphyrin coordination complex.. ferroheme b : Heme b in which the iron has oxidation state +2.. heme : A heme is any tetrapyrrolic chelate of iron. | 3.46 | 2 | 0 | | |
cobinamide [no description available] | 3.18 | 1 | 0 | | |
cobamamide cobamamide : A member of the class of cobalamins that is vitamin B12 in which the cyano group is replaced by a 5'-deoxyadenos-5'-yl moiety. It is one of the two metabolically active form of vitamin B12. | 1.98 | 1 | 0 | | |
vitamin b 12 Vitamin B 12: A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. INTRINSIC FACTOR is important for the assimilation of vitamin B 12. | 6.57 | 21 | 0 | | |
factor f430 factor F430: low mol wt nickel-containing cpd from Methanobacterium. coenzyme F430 : A nickel tetrapyrrole found only in methanogenic Archaea. It is the prosthetic group of the enzyme methyl coenzyme M reductase which catalyses the release of methane in the final step of methanogenesis. | 3.06 | 1 | 0 | | |