| GOID Link to GO |
Functional Category | Description | Protein Count link to protein list |
|---|---|---|---|
| GO:0005524 | ATP binding | Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. | 699 |
| GO:0008270 | zinc ion binding | Interacting selectively and non-covalently with zinc (Zn) ions. | 360 |
| GO:0005509 | calcium ion binding | Interacting selectively and non-covalently with calcium ions (Ca2+). | 235 |
| GO:0005525 | GTP binding | Interacting selectively and non-covalently with GTP, guanosine triphosphate. | 210 |
| GO:0000287 | magnesium ion binding | Interacting selectively and non-covalently with magnesium (Mg) ions. | 166 |
| GO:0046872 | metal ion binding | Interacting selectively and non-covalently with any metal ion. | 156 |
| GO:0043531 | ADP binding | Interacting selectively and non-covalently with ADP, adenosine 5'-diphosphate. | 134 |
| GO:0005507 | copper ion binding | Interacting selectively and non-covalently with copper (Cu) ions. | 115 |
| GO:0019003 | GDP binding | Interacting selectively and non-covalently with GDP, guanosine 5'-diphosphate. | 103 |
| GO:0043168 | anion binding | Interacting selectively and non-covalently with anions, charged atoms or groups of atoms with a net negative charge. | 61 |
| GO:0005546 | phosphatidylinositol-4,5-bisphosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-4,5-bisphosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 4' and 5' positions. | 57 |
| GO:0008201 | heparin binding | Interacting selectively and non-covalently with heparin, any member of a group of glycosaminoglycans found mainly as an intracellular component of mast cells and which consist predominantly of alternating alpha-(1->4)-linked D-galactose and N-acetyl-D-glucosamine-6-sulfate residues. | 50 |
| GO:0050660 | flavin adenine dinucleotide binding | Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2. | 50 |
| GO:0030145 | manganese ion binding | Interacting selectively and non-covalently with manganese (Mn) ions. | 49 |
| GO:0005506 | iron ion binding | Interacting selectively and non-covalently with iron (Fe) ions. | 42 |
| GO:0050897 | cobalt ion binding | Interacting selectively and non-covalently with a cobalt (Co) ion. | 34 |
| GO:0035091 | phosphatidylinositol binding | Interacting selectively and non-covalently with any inositol-containing glycerophospholipid, i.e. phosphatidylinositol (PtdIns) and its phosphorylated derivatives. | 34 |
| GO:0030170 | pyridoxal phosphate binding | Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6. | 30 |
| GO:0071949 | FAD binding | Interacting selectively and non-covalently with the oxidized form, FAD, of flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes. | 30 |
| GO:0001972 | retinoic acid binding | Interacting selectively and non-covalently with retinoic acid, 3,7-dimethyl-9-(2,6,-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenoic acid. | 29 |
| GO:0005543 | phospholipid binding | Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester. | 28 |
| GO:0032266 | phosphatidylinositol-3-phosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-3-phosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 3' position. | 26 |
| GO:0000062 | fatty-acyl-CoA binding | Interacting selectively and non-covalently with acyl-CoA, any derivative of coenzyme A in which the sulfhydryl group is in thiolester linkage with a fatty acyl group. | 25 |
| GO:0005547 | phosphatidylinositol-3,4,5-trisphosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-3,4,5-trisphosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 3', 4' and 5' positions. | 25 |
| GO:0016597 | amino acid binding | Interacting selectively and non-covalently with an amino acid, organic acids containing one or more amino substituents. | 24 |
| GO:0005544 | calcium-dependent phospholipid binding | Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester, in the presence of calcium. | 23 |
| GO:0051378 | serotonin binding | Interacting selectively and non-covalently with serotonin (5-hydroxytryptamine), a monoamine neurotransmitter occurring in the peripheral and central nervous systems, also having hormonal properties. | 23 |
| GO:0070403 | NAD+ binding | Interacting selectively and non-covalently with the oxidized form, NAD, of nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions. | 21 |
| GO:0005545 | 1-phosphatidylinositol binding | Interacting selectively and non-covalently with phosphatidylinositol, any glycophospholipid with its sn-glycerol 3-phosphate residue is esterified to the 1-hydroxyl group of 1D-myo-inositol. | 21 |
| GO:0002134 | UTP binding | Interacting selectively and non-covalently with UTP, uridine 5'-triphosphate. | 20 |
| GO:0001786 | phosphatidylserine binding | Interacting selectively and non-covalently with phosphatidylserine, a class of glycophospholipids in which a phosphatidyl group is esterified to the hydroxyl group of L-serine. | 18 |
| GO:0005504 | fatty acid binding | Interacting selectively and non-covalently with fatty acids, aliphatic monocarboxylic acids liberated from naturally occurring fats and oils by hydrolysis. | 17 |
| GO:0031406 | carboxylic acid binding | Interacting selectively and non-covalently with a carboxylic acid, any organic acid containing one or more carboxyl (COOH) groups or anions (COO-). | 16 |
| GO:0002135 | CTP binding | Interacting selectively and non-covalently with CTP, cytidine 5'-triphosphate. | 16 |
| GO:0016208 | AMP binding | Interacting selectively and non-covalently with AMP, adenosine monophosphate. | 16 |
| GO:0043295 | glutathione binding | Interacting selectively and non-covalently with glutathione; a tripeptide composed of the three amino acids cysteine, glutamic acid and glycine. | 16 |
| GO:0080025 | phosphatidylinositol-3,5-bisphosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-3,5-bisphosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 3' and 5' positions. | 16 |
| GO:0008198 | ferrous iron binding | Interacting selectively and non-covalently with ferrous iron, Fe(II). | 16 |
| GO:0046914 | transition metal ion binding | Interacting selectively and non-covalently with a transition metal ions; a transition metal is an element whose atom has an incomplete d-subshell of extranuclear electrons, or which gives rise to a cation or cations with an incomplete d-subshell. Transition metals often have more than one valency state. Biologically relevant transition metals include vanadium, manganese, iron, copper, cobalt, nickel, molybdenum and silver. | 15 |
| GO:0030552 | cAMP binding | Interacting selectively and non-covalently with cAMP, the nucleotide cyclic AMP (adenosine 3',5'-cyclophosphate). | 15 |
| GO:0030553 | cGMP binding | Interacting selectively and non-covalently with cGMP, the nucleotide cyclic GMP (guanosine 3',5'-cyclophosphate). | 15 |
| GO:0042166 | acetylcholine binding | Interacting selectively and non-covalently with acetylcholine, an acetic acid ester of the organic base choline that functions as a neurotransmitter, released at the synapses of parasympathetic nerves and at neuromuscular junctions. | 14 |
| GO:0010181 | FMN binding | Interacting selectively and non-covalently with FMN, flavin mononucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes. | 14 |
| GO:0035240 | dopamine binding | Interacting selectively and non-covalently with dopamine, a catecholamine neurotransmitter formed by aromatic-L-amino-acid decarboxylase from 3,4-dihydroxy-L-phenylalanine. | 14 |
| GO:0016594 | glycine binding | Interacting selectively and non-covalently with glycine, aminoethanoic acid. | 13 |
| GO:0032564 | dATP binding | Interacting selectively and non-covalently with dATP, deoxyadenosine triphosphate. | 12 |
| GO:0070402 | NADPH binding | Interacting selectively and non-covalently with the reduced form, NADPH, of nicotinamide-adenine dinucleotide phosphate, a coenzyme involved in many redox and biosynthetic reactions. | 11 |
| GO:0070273 | phosphatidylinositol-4-phosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-4-phosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 4' position. | 11 |
| GO:0070300 | phosphatidic acid binding | Interacting selectively and non-covalently with phosphatidic acid, any of a class of glycerol phosphate in which both the remaining hydroxyl groups of the glycerol moiety are esterified with fatty acids. | 11 |
| GO:0031404 | chloride ion binding | Interacting selectively and non-covalently with chloride ions (Cl-). | 10 |
| GO:0016595 | glutamate binding | Interacting selectively and non-covalently with glutamate, the anion of 2-aminopentanedioic acid. | 10 |
| GO:0008429 | phosphatidylethanolamine binding | Interacting selectively and non-covalently with phosphatidylethanolamine, any of a class of glycerophospholipids in which a phosphatidyl group is esterified to the hydroxyl group of ethanolamine. | 9 |
| GO:0043325 | phosphatidylinositol-3,4-bisphosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-3,4-bisphosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 3' and 4' positions. | 9 |
| GO:0019002 | GMP binding | Interacting selectively and non-covalently with GMP, guanosine monophosphate. | 8 |
| GO:0043169 | cation binding | Interacting selectively and non-covalently with cations, charged atoms or groups of atoms with a net positive charge. | 8 |
| GO:0070404 | NADH binding | Interacting selectively and non-covalently with the reduced form, NADH, of nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions. | 8 |
| GO:0030955 | potassium ion binding | Interacting selectively and non-covalently with potassium (K+) ions. | 8 |
| GO:0050815 | phosphoserine binding | Interacting selectively and non-covalently with a phosphorylated serine residue within a protein. | 8 |
| GO:0070401 | NADP+ binding | Interacting selectively and non-covalently with the oxidized form, NADP+, of nicotinamide-adenine dinucleotide phosphate, a coenzyme involved in many redox and biosynthetic reactions. | 8 |
| GO:0035639 | purine ribonucleoside triphosphate binding | Interacting selectively and non-covalently with a purine ribonucleoside triphosphate, a compound consisting of a purine base linked to a ribose sugar esterified with triphosphate on the sugar. | 7 |
| GO:0034235 | GPI anchor binding | Interacting selectively and non-covalently with any glycosylphosphatidylinositol anchor. GPI anchors serve to attach membrane proteins to the lipid bilayer of cell membranes. | 7 |
| GO:0033265 | choline binding | Interacting selectively and non-covalently with choline, the amine 2-hydroxy-N,N,N-trimethylethanaminium. | 7 |
| GO:0031402 | sodium ion binding | Interacting selectively and non-covalently with sodium ions (Na+). | 7 |
| GO:0070095 | fructose-6-phosphate binding | Interacting selectively and non-covalently with fructose 6-phosphate. | 6 |
| GO:0000822 | inositol hexakisphosphate binding | Interacting selectively and non-covalently with inositol hexakisphosphate. | 6 |
| GO:0045340 | mercury ion binding | Interacting selectively and non-covalently with mercury (Hg) ions. | 5 |
| GO:0070679 | inositol 1,4,5 trisphosphate binding | Interacting selectively and non-covalently with inositol 1,4,5 trisphosphate. | 5 |
| GO:0010314 | phosphatidylinositol-5-phosphate binding | Interacting selectively and non-covalently with phosphatidylinositol-5-phosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 5' position. | 5 |
| GO:0070025 | carbon monoxide binding | Interacting selectively and non-covalently with carbon monoxide (CO). | 5 |
| GO:0016151 | nickel cation binding | Interacting selectively and non-covalently with nickel (Ni) cations. | 5 |
| GO:0042301 | phosphate ion binding | Interacting selectively and non-covalently with phosphate. | 5 |
| GO:0043395 | heparan sulfate proteoglycan binding | Interacting selectively and non-covalently with a heparan sulfate proteoglycan, any proteoglycan containing heparan sulfate as the glycosaminoglycan carbohydrate unit. | 5 |
| GO:0030976 | thiamine pyrophosphate binding | Interacting selectively and non-covalently with thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases. | 4 |
| GO:0032052 | bile acid binding | Interacting selectively and non-covalently with bile acids, any of a group of steroid carboxylic acids occurring in bile. | 4 |
| GO:0008199 | ferric iron binding | Interacting selectively and non-covalently with ferric iron, Fe(III). | 4 |
| GO:0034618 | arginine binding | Interacting selectively and non-covalently with 2-amino-5-(carbamimidamido)pentanoic acid. | 4 |
| GO:0035276 | ethanol binding | Interacting selectively and non-covalently with ethanol, CH(3)-CH(2)-OH. | 4 |
| GO:0072341 | modified amino acid binding | Interacting selectively and non-covalently with a modified amino acid. | 3 |
| GO:0070540 | stearic acid binding | Interacting selectively and non-covalently with stearic acid, the 18-carbon saturated fatty acid octadecanoic acid. | 3 |
| GO:0005542 | folic acid binding | Interacting selectively and non-covalently with folic acid, pteroylglutamic acid. Folic acid is widely distributed as a member of the vitamin B complex and is essential for the synthesis of purine and pyrimidines. | 3 |
| GO:0070335 | aspartate binding | Interacting selectively and non-covalently with aspartate, the alpha-amino-acid anion of 2-aminobutanedioic acid that has formula C4H5NO4. | 3 |
| GO:0070728 | leucine binding | Interacting selectively and non-covalently with 2-amino-4-methylpentanoic acid. | 2 |
| GO:0010427 | abscisic acid binding | Interacting selectively and non-covalently with abscisic acid, plant hormones that regulate aspects of plant growth. | 2 |
| GO:1901612 | cardiolipin binding | Interacting selectively and non-covalently with cardiolipin. | 2 |
| GO:0050544 | arachidonic acid binding | Interacting selectively and non-covalently with arachidonic acid, a straight chain fatty acid with 20 carbon atoms and four double bonds per molecule. Arachidonic acid is the all-Z-(5,8,11,14)-isomer. | 2 |
| GO:0035374 | chondroitin sulfate binding | Interacting selectively and non-covalently with chondroitin sulfate, a glycosaminoglycan made up of two alternating monosaccharides: D-glucuronic acid (GlcA) and N-acetyl-D-galactosamine (GalNAc). | 2 |
| GO:0070538 | oleic acid binding | Interacting selectively and non-covalently with oleic acid, the 18-carbon monounsaturated fatty acid (9Z)-octadec-9-enoic acid. | 2 |
| GO:0030151 | molybdenum ion binding | Interacting selectively and non-covalently with molybdenum (Mo) ions. | 2 |
| GO:0036042 | long-chain fatty acyl-CoA binding | Interacting selectively and non-covalently with a long-chain fatty acyl-CoA. A long-chain fatty acyl-CoA is any derivative of coenzyme A in which the sulfhydryl group is in a thioester linkage with a long-chain fatty-acyl group. Long-chain fatty-acyl-CoAs have chain lengths of C13 or more. | 2 |
| GO:0035438 | cyclic-di-GMP binding | Interacting selectively and non-covalently with cyclic-di-GMP, cyclic dimeric guanosine monophosphate. | 2 |
| GO:0071890 | bicarbonate binding | Interacting selectively and non-covalently with bicarbonate (CHO3-) ions. | 1 |
| GO:0031177 | phosphopantetheine binding | Interacting selectively and non-covalently with phosphopantetheine, the vitamin pantetheine 4'-(dihydrogen phosphate). | 1 |
| GO:0070027 | carbon monoxide sensor activity | Interacting selectively and non-covalently with and responding, e.g. by conformational change, to changes in the cellular level of carbon monoxide (CO). | 1 |
| GO:0033293 | monocarboxylic acid binding | Interacting selectively and non-covalently with a monocarboxylic acid, any organic acid containing one carboxyl (COOH) group or anion (COO-). | 1 |
| GO:0031210 | phosphatidylcholine binding | Interacting selectively and non-covalently with phosphatidylcholine, a class of glycophospholipids in which a phosphatidyl group is esterified to the hydroxyl group of choline. | 1 |
| GO:0016531 | copper chaperone activity | Assists in the delivery of copper ions to target proteins or compartments. | 1 |
| GO:0046870 | cadmium ion binding | Interacting selectively and non-covalently with cadmium (Cd) ions. | 1 |
| GO:1901640 | XTP binding | Interacting selectively and non-covalently with XTP. | 1 |
| GO:0031403 | lithium ion binding | Interacting selectively and non-covalently with lithium ions (Li+). | 1 |
| GO:0019811 | cocaine binding | Interacting selectively and non-covalently with cocaine (2-beta-carbomethoxy-3-beta-benzoxytropane), an alkaloid obtained from dried leaves of the South American shrub Erythroxylon coca or by chemical synthesis. | 1 |
| GO:0043533 | inositol 1,3,4,5 tetrakisphosphate binding | Interacting selectively and non-covalently with inositol 1,3,4,5 tetrakisphosphate. | 1 |
| GO:0097216 | guanosine tetraphosphate binding | Interacting selectively and non-covalently with guanosine tetraphosphate (5'-ppGpp-3'), a guanosine bisphosphate having diphosphate groups at both the 3' and 5'-positions. | 1 |
| GO:0009374 | biotin binding | Interacting selectively and non-covalently with biotin (cis-tetrahydro-2-oxothieno(3,4-d)imidazoline-4-valeric acid), the (+) enantiomer of which is very widely distributed in cells and serves as a carrier in a number of enzymatic beta-carboxylation reactions. | 1 |
| GO:1901641 | ITP binding | Interacting selectively and non-covalently with ITP. | 1 |
| GO:0032791 | lead ion binding | Interacting selectively and non-covalently with lead (Pb) ions. | 1 |
| GO:0031418 | L-ascorbic acid binding | Interacting selectively and non-covalently with L-ascorbic acid, (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate; L-ascorbic acid is vitamin C and has co-factor and anti-oxidant activities in many species. | 1 |
| GO:0010013 | N-1-naphthylphthalamic acid binding | Interacting selectively and non-covalently with N-1-naphthylphthalamic acid, an auxin transport inhibitor. | 1 |
| GO:0034986 | iron chaperone activity | Assists in the delivery of iron ions to target proteins or compartments. | 1 |
| GO:0032567 | dGTP binding | Interacting selectively and non-covalently with dGTP, deoxyguanosine triphosphate. | 1 |
| GO:0031405 | lipoic acid binding | Interacting selectively and non-covalently with lipoic acid, 1,2-dithiolane-3-pentanoic acid. | 1 |
| GO:0050656 | 3'-phosphoadenosine 5'-phosphosulfate binding | Interacting selectively and non-covalently with 3'-phosphoadenosine 5'-phosphosulfate (PAPS), a naturally occurring mixed anhydride. It is an intermediate in the formation of a variety of sulfo compounds in biological systems. | 1 |