Phosphoribosylamine

Phosphoribosylamine
Names
	Other names PRA
Identifiers
CAS Number	14050-66-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:17284;
ChemSpider	2339538 ;
MeSH	Phosphoribosylamine
PubChem CID	3082052;
CompTox Dashboard (EPA)	DTXSID10903977 ;
	InChI InChI=1S/C5H12NO7P/c6-5-4(8)3(7)2(13-5)1-12-14(9,10)11/h2-5,7-8H,1,6H2,(H2,9,10,11)/t2-,3-,4-,5?/m1/s1 Key: SKCBPEVYGOQGJN-SOOFDHNKSA-N ;
	SMILES C([C@@H]1[C@H]([C@H](C(O1)N)O)O)OP(=O)(O)O;
Properties
Chemical formula	C5H12NO7P
Molar mass	229.125 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Phosphoribosylamine (PRA) is a biochemical intermediate in the formation of purine nucleotides via inosine-5-monophosphate, and hence is a building block for DNA and RNA.^[1]^[2]^[3] The vitamins thiamine^[4] and cobalamin^[5] also contain fragments derived from PRA.^[6]

It is the product of the enzyme amidophosphoribosyltransferase which attaches ammonia from glutamine to phosphoribosyl pyrophosphate (PRPP) at its anomeric carbon:^[2]

PRPP + glutamine → PRA + glutamate + PPi

The biosynthesis pathway next combines PRA with glycine in a process driven by ATP giving glycineamide ribonucleotide (GAR). The enzyme phosphoribosylamine—glycine ligase catalyses the reaction forming an amide bond:^[7]

PRA + glycine + ATP → GAR + ADP + Pi

References

^ R. Caspi (2009-01-13). "Pathway: 5-aminoimidazole ribonucleotide biosynthesis I". MetaCyc Metabolic Pathway Database. Retrieved 2022-02-02.
^ ^a ^b Zhang, Y.; Morar, M.; Ealick, S.E. (2008). "Structural biology of the purine biosynthetic pathway". Cellular and Molecular Life Sciences. 65: 3699–3724. doi:10.1007/s00018-008-8295-8. PMC 2596281. PMID 18712276.
^ Gupta, Rani; Gupta, Namita (2021). "Nucleotide Biosynthesis and Regulation". Fundamentals of Bacterial Physiology and Metabolism. pp. 525–554. doi:10.1007/978-981-16-0723-3_19. ISBN 978-981-16-0722-6. S2CID 234897784.
^ Chatterjee, Abhishek; Hazra, Amrita B.; Abdelwahed, Sameh; Hilmey, David G.; Begley, Tadhg P. (2010). "A "Radical Dance" in Thiamin Biosynthesis: Mechanistic Analysis of the Bacterial Hydroxymethylpyrimidine Phosphate Synthase". Angewandte Chemie International Edition. 49 (46): 8653–8656. doi:10.1002/anie.201003419. PMC 3147014. PMID 20886485.
^ R. Caspi (2019-09-23). "Pathway: 5-hydroxybenzimidazole biosynthesis (anaerobic)". MetaCyc Metabolic Pathway Database. Retrieved 2022-02-10.
^ Mehta, Angad P.; Abdelwahed, Sameh H.; Fenwick, Michael K.; Hazra, Amrita B.; Taga, Michiko E.; Zhang, Yang; Ealick, Steven E.; Begley, Tadhg P. (2015). "Anaerobic 5-Hydroxybenzimidazole Formation from Aminoimidazole Ribotide: An Unanticipated Intersection of Thiamin and Vitamin B12 Biosynthesis". Journal of the American Chemical Society. 137 (33): 10444–10447. doi:10.1021/jacs.5b03576. PMC 4753784. PMID 26237670.
^ Welin, Martin; Grossmann, Jörg Günter; Flodin, Susanne; Nyman, Tomas; Stenmark, Pål; Trésaugues, Lionel; Kotenyova, Tetyana; Johansson, Ida; Nordlund, Pär; Lehtiö, Lari (2010). "Structural studies of tri-functional human GART". Nucleic Acids Research. 38 (20): 7308–7319. doi:10.1093/nar/gkq595. PMC 2978367. PMID 20631005.

[IMP-1] R. Caspi (2009-01-13). "Pathway: 5-aminoimidazole ribonucleotide biosynthesis I". MetaCyc Metabolic Pathway Database. Retrieved 2022-02-02.

[Zhang-2] Zhang, Y.; Morar, M.; Ealick, S.E. (2008). "Structural biology of the purine biosynthetic pathway". Cellular and Molecular Life Sciences. 65: 3699–3724. doi:10.1007/s00018-008-8295-8. PMC 2596281. PMID 18712276.

[3] Gupta, Rani; Gupta, Namita (2021). "Nucleotide Biosynthesis and Regulation". Fundamentals of Bacterial Physiology and Metabolism. pp. 525–554. doi:10.1007/978-981-16-0723-3_19. ISBN 978-981-16-0722-6. S2CID 234897784.

[Dance-4] Chatterjee, Abhishek; Hazra, Amrita B.; Abdelwahed, Sameh; Hilmey, David G.; Begley, Tadhg P. (2010). "A "Radical Dance" in Thiamin Biosynthesis: Mechanistic Analysis of the Bacterial Hydroxymethylpyrimidine Phosphate Synthase". Angewandte Chemie International Edition. 49 (46): 8653–8656. doi:10.1002/anie.201003419. PMC 3147014. PMID 20886485.

[HBI-5] R. Caspi (2019-09-23). "Pathway: 5-hydroxybenzimidazole biosynthesis (anaerobic)". MetaCyc Metabolic Pathway Database. Retrieved 2022-02-10.

[Begley2015-6] Mehta, Angad P.; Abdelwahed, Sameh H.; Fenwick, Michael K.; Hazra, Amrita B.; Taga, Michiko E.; Zhang, Yang; Ealick, Steven E.; Begley, Tadhg P. (2015). "Anaerobic 5-Hydroxybenzimidazole Formation from Aminoimidazole Ribotide: An Unanticipated Intersection of Thiamin and Vitamin B12 Biosynthesis". Journal of the American Chemical Society. 137 (33): 10444–10447. doi:10.1021/jacs.5b03576. PMC 4753784. PMID 26237670.

[GART-7] Welin, Martin; Grossmann, Jörg Günter; Flodin, Susanne; Nyman, Tomas; Stenmark, Pål; Trésaugues, Lionel; Kotenyova, Tetyana; Johansson, Ida; Nordlund, Pär; Lehtiö, Lari (2010). "Structural studies of tri-functional human GART". Nucleic Acids Research. 38 (20): 7308–7319. doi:10.1093/nar/gkq595. PMC 2978367. PMID 20631005.

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[3]

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[6]

[7]

See also

References