Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D006158
http://purl.bioontology.org/ontology/MESH/D006158
Preferred Name

Guanosine Pentaphosphate

Definitions
Guanosine 5'-triphosphate 2'(3')-diphosphate. A guanine nucleotide containing five phosphate groups. Three phosphate groups are esterified to the sugar moiety in the 5' position and the other two in the 2' or 3' position. This nucleotide serves as a messenger to turn off the synthesis of ribosomal RNA when amino acids are not available for protein synthesis.
Synonyms
Guanosine 5'-(tetrahydrogen triphosphate), 3'-(trihydrogen diphosphate)
3'-Diphosphate 5'-Triphosphate, Guanosine
Alarmone
(p)ppGpp
Pentaphosphate, Guanosine
Bacterial Magic Spot pppGpp
Guanosine 3' Diphosphate 5' Triphosphate
5'-Triphosphate, Guanosine 3'-Diphosphate
Alarmone pppGpp
Guanosine 3'-Diphosphate 5'-Triphosphate
ppprGpp
pppGpp, Alarmone
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Type http://www.w3.org/2002/07/owl#Class
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