adenylylsulfate kinase | |||||||||
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Identifiers | |||||||||
EC no. | 2.7.1.25 | ||||||||
CAS no. | 9012-38-8 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
Gene Ontology | AmiGO / QuickGO | ||||||||
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APS_kinase | |||||||||
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Identifiers | |||||||||
Symbol | APS_kinase | ||||||||
Pfam | PF01583 | ||||||||
Pfam clan | CL0023 | ||||||||
InterPro | IPR002891 | ||||||||
SCOP2 | 1d6j / SCOPe / SUPFAM | ||||||||
CDD | cd02027 | ||||||||
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In enzymology, an adenylyl-sulfate kinase (EC 2.7.1.25) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are ATP and adenylyl sulfate, whereas its two products are ADP and 3'-phosphoadenylyl sulfate.
This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:adenylyl-sulfate 3'-phosphotransferase. Other names in common use include adenylylsulfate kinase (phosphorylating), 5'-phosphoadenosine sulfate kinase, adenosine 5'-phosphosulfate kinase, adenosine phosphosulfate kinase, adenosine phosphosulfokinase, adenosine-5'-phosphosulfate-3'-phosphokinase, and APS kinase. This enzyme participates in 3 metabolic pathways: purine metabolism, selenoamino acid metabolism, and sulfur metabolism.
As of late 2007, 11 structures have been solved for this class of enzymes, with PDB accession codes 1D6J, 1M7G, 1M7H, 1X6V, 1XJQ, 1XNJ, 2AX4, 2GKS, 2OFW, 2OFX, and 2PEY.
3′-Phosphoadenosine-5′-phosphosulfate (PAPS) is a derivative of adenosine monophosphate (AMP) that is phosphorylated at the 3′ position and has a sulfate group attached to the 5′ phosphate. It is the most common coenzyme in sulfotransferase reactions and hence part of sulfation pathways. It is endogenously synthesized by organisms via the phosphorylation of adenosine 5′-phosphosulfate (APS), an intermediary metabolite. In humans such reaction is performed by bifunctional 3′-phosphoadenosine 5′-phosphosulfate synthases using ATP as the phosphate donor.
Adenylyl-sulfate reductase (thioredoxin) is an enzyme that catalyzes the chemical reaction
In enzymology, a phosphoadenylyl-sulfate reductase (thioredoxin) is an enzyme that catalyzes the chemical reaction
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In enzymology, a [heparan sulfate]-glucosamine 3-sulfotransferase 1 is an enzyme that catalyzes the chemical reaction
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In enzymology, a fucokinase is an enzyme that catalyzes the chemical reaction
In enzymology, a Goodpasture-antigen-binding protein kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol-pentakisphosphate 2-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol-tetrakisphosphate 5-kinase is an enzyme that catalyzes the chemical reaction
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In enzymology, a N-acetylgalactosamine kinase is an enzyme that catalyzes the chemical reaction
In enzymology, a sulfate adenylyltransferase is an enzyme that catalyzes the chemical reaction
Bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthetase 1 is an enzyme that in humans is encoded by the PAPSS1 gene.
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In biochemistry, carbohydrate sulfotransferases are enzymes within the class of sulfotransferases which catalyze the transfer of the sulfate functional group to carbohydrate groups in glycoproteins and glycolipids. Carbohydrates are used by cells for a wide range of functions from structural purposes to extracellular communication. Carbohydrates are suitable for such a wide variety of functions due to the diversity in structure generated from monosaccharide composition, glycosidic linkage positions, chain branching, and covalent modification. Possible covalent modifications include acetylation, methylation, phosphorylation, and sulfation. Sulfation, performed by carbohydrate sulfotransferases, generates carbohydrate sulfate esters. These sulfate esters are only located extracellularly, whether through excretion into the extracellular matrix (ECM) or by presentation on the cell surface. As extracellular compounds, sulfated carbohydrates are mediators of intercellular communication, cellular adhesion, and ECM maintenance.