Record Information |
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Version | 2.0 |
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Created at | 2005-11-16 15:48:42 UTC |
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Updated at | 2021-06-29 00:47:05 UTC |
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NP-MRD ID | NP0000169 |
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Secondary Accession Numbers | None |
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Natural Product Identification |
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Common Name | Phosphocreatine |
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Description | Phosphocreatine, also known as creatine phosphate (CP) or PCr (Pcr), is a phosphorylated creatine molecule that serves as a rapidly mobilizable reserve of high-energy phosphates in skeletal muscle, myocardium and the brain to recycle adenosine triphosphate, the energy currency of the cell. Phosphocreatine undergoes irreversible cyclization and dehydration to form creatinine at a fractional rate of 0.026 Per day, thus forming approximately 2 g creatinine/day in an adult male. This is the amount of creatine that must be provided either from dietary sources or by endogenous synthesis to maintain the body pool of (creatine and) phosphocreatine. Creatine is an amino acid that plays a vital role as phosphocreatine in regenerating adenosine triphosphate in skeletal muscle to energize muscle contraction. Creatine is phosphorylated to phosphocreatine in muscle in a reaction that is catalyzed by the enzyme creatine kinase. This enzyme is in highest concentration in muscle and nerve. Oral administration increases muscle stores. During the past decade, creatine has assumed prominence as an ergogenic (and legal) aid for professional and elite athletes. Most (~ 95%) of the total body creatine-phosphocreatine pool is in muscle (more in skeletal muscle than in smooth muscle) and amounts to 120 g (or 925 mmol) in a 70 kg adult male. Approximately 60-67% of the content in resting muscle is in the phosphorylated form. This generates enough ATP at the myofibrillar apparatus to power about 4 seconds of muscle contraction in exercise. Phosphocreatine reacts with ADP to yield ATP and creatine; the reversible reaction is catalyzed by creatine kinase. Phosphocreatine is the chief store of high-energy phosphates in muscle. Thus, this reaction, which permits the rephosphorylation of ADP to ATP, is the immediate source of energy in muscle contraction. During rest, metabolic processes regenerate phosphocreatine stores. In normal muscle, ATP that is broken down to ADP is immediately rephosphorylated to ATP. Thus, phosphocreatine serves as a reservoir of ATP-synthesizing potential. Phosphocreatine is the only fuel available to precipitously regenerate ATP during episodes of rapid fluctuations in demand. The availability of phosphocreatine likely limits muscle performance during brief, high-power exercise, i.E., Maximal exercise of short duration. With near maximal isometric contraction, the rate of utilization of phosphocreatine declines after 1-2 seconds of contraction, prior to the glycolysis peak at approximately 3 seconds (PMID: 10079702 ). |
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Structure | CN(CC(O)=O)C(=N)NP(O)(O)=O InChI=1S/C4H10N3O5P/c1-7(2-3(8)9)4(5)6-13(10,11)12/h2H2,1H3,(H,8,9)(H4,5,6,10,11,12) |
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Synonyms | Value | Source |
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Creatine phosphate | ChEBI | Creatine phosphic acid | ChEBI | N-(N-Phosphonoamido)sarcosine | ChEBI | N-(Phosphonoamidino)sarcosine | ChEBI | N-Phosphorylcreatine | ChEBI | N(Omega)-phosphonocreatine | ChEBI | Phosphorylcreatine | ChEBI | {[imino(phosphonoamino)methyl](methyl)amino}acetic acid | ChEBI | N-Phosphocreatine | Kegg | Creatine phosphoric acid | Generator | {[imino(phosphonoamino)methyl](methyl)amino}acetate | Generator | Creatine-p | HMDB | Creatine-phosphate | HMDB | Creatinephosphoric acid | HMDB | N-(Phosphonoamidino)-sarcosine | HMDB | N-Phosphorocreatine | HMDB | N-[Imino(phosphonoamino)methyl]-N-methyl-glycine | HMDB | Neo-ton | HMDB | p-Creatine | HMDB |
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Chemical Formula | C4H10N3O5P |
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Average Mass | 211.1131 Da |
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Monoisotopic Mass | 211.03581 Da |
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IUPAC Name | 2-(N-methyl-N'-phosphonocarbamimidamido)acetic acid |
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Traditional Name | creatine-phosphate |
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CAS Registry Number | 67-07-2 |
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SMILES | CN(CC(O)=O)C(=N)NP(O)(O)=O |
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InChI Identifier | InChI=1S/C4H10N3O5P/c1-7(2-3(8)9)4(5)6-13(10,11)12/h2H2,1H3,(H,8,9)(H4,5,6,10,11,12) |
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InChI Key | DRBBFCLWYRJSJZ-UHFFFAOYSA-N |
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Experimental Spectra |
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| Spectrum Type | Description | Depositor Email | Depositor Organization | Depositor | Deposition Date | View |
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1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, experimental) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum |
| Predicted Spectra |
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| Not Available | Chemical Shift Submissions |
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| Not Available | Species |
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Species of Origin | |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Carboxylic acids and derivatives |
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Sub Class | Amino acids, peptides, and analogues |
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Direct Parent | Alpha amino acids and derivatives |
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Alternative Parents | |
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Substituents | - Alpha-amino acid or derivatives
- Organic phosphoric acid derivative
- Guanidine
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Organic nitrogen compound
- Organic oxygen compound
- Organopnictogen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Organonitrogen compound
- Carbonyl group
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Physical Properties |
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State | Solid |
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Experimental Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Predicted Properties | |
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General References | - Pastoris O, Dossena M, Foppa P, Catapano M, Arbustini E, Bellini O, Dal Bello B, Minzioni G, Ceriana P, Barzaghi N: Effect of L-carnitine on myocardial metabolism: results of a balanced, placebo-controlled, double-blind study in patients undergoing open heart surgery. Pharmacol Res. 1998 Feb;37(2):115-22. [PubMed:9572066 ]
- Schmidt A, Marescau B, Boehm EA, Renema WK, Peco R, Das A, Steinfeld R, Chan S, Wallis J, Davidoff M, Ullrich K, Waldschutz R, Heerschap A, De Deyn PP, Neubauer S, Isbrandt D: Severely altered guanidino compound levels, disturbed body weight homeostasis and impaired fertility in a mouse model of guanidinoacetate N-methyltransferase (GAMT) deficiency. Hum Mol Genet. 2004 May 1;13(9):905-21. Epub 2004 Mar 17. [PubMed:15028668 ]
- Gideon P, Henriksen O, Sperling B, Christiansen P, Olsen TS, Jorgensen HS, Arlien-Soborg P: Early time course of N-acetylaspartate, creatine and phosphocreatine, and compounds containing choline in the brain after acute stroke. A proton magnetic resonance spectroscopy study. Stroke. 1992 Nov;23(11):1566-72. [PubMed:1440704 ]
- Green AL, Hultman E, Macdonald IA, Sewell DA, Greenhaff PL: Carbohydrate ingestion augments skeletal muscle creatine accumulation during creatine supplementation in humans. Am J Physiol. 1996 Nov;271(5 Pt 1):E821-6. [PubMed:8944667 ]
- Skare OC, Skadberg, Wisnes AR: Creatine supplementation improves sprint performance in male sprinters. Scand J Med Sci Sports. 2001 Apr;11(2):96-102. [PubMed:11252467 ]
- Greenhaff PL, Soderlund K, Ren JM, Hultman E: Energy metabolism in single human muscle fibres during intermittent contraction with occluded circulation. J Physiol. 1993 Jan;460:443-53. [PubMed:8487203 ]
- Greiner A, Esterhammer R, Pilav S, Arnold W, Santner W, Neuhauser B, Fraedrich G, Jaschke WR, Schocke MF: High-energy phosphate metabolism in the calf muscle during moderate isotonic exercise under different degrees of cuff compression: a phosphorus 31 magnetic resonance spectroscopy study. J Vasc Surg. 2005 Aug;42(2):259-67. [PubMed:16102624 ]
- Murphy AJ, Watsford ML, Coutts AJ, Richards DA: Effects of creatine supplementation on aerobic power and cardiovascular structure and function. J Sci Med Sport. 2005 Sep;8(3):305-13. [PubMed:16248471 ]
- Braegger CP, Schlattner U, Wallimann T, Utiger A, Frank F, Schaefer B, Heizmann CW, Sennhauser FH: Effects of creatine supplementation in cystic fibrosis: results of a pilot study. J Cyst Fibros. 2003 Dec;2(4):177-82. [PubMed:15463870 ]
- Kemp GJ, Hands LJ, Ramaswami G, Taylor DJ, Nicolaides A, Amato A, Radda GK: Calf muscle mitochondrial and glycogenolytic ATP synthesis in patients with claudication due to peripheral vascular disease analysed using 31P magnetic resonance spectroscopy. Clin Sci (Lond). 1995 Dec;89(6):581-90. [PubMed:8549076 ]
- Taylor DJ, Thompson CH, Kemp GJ, Barnes PR, Sanderson AL, Radda GK, Phillips DI: A relationship between impaired fetal growth and reduced muscle glycolysis revealed by 31P magnetic resonance spectroscopy. Diabetologia. 1995 Oct;38(10):1205-12. [PubMed:8690173 ]
- Ferguson RA, Ball D, Krustrup P, Aagaard P, Kjaer M, Sargeant AJ, Hellsten Y, Bangsbo J: Muscle oxygen uptake and energy turnover during dynamic exercise at different contraction frequencies in humans. J Physiol. 2001 Oct 1;536(Pt 1):261-71. [PubMed:11579174 ]
- Ferguson RA, Krustrup P, Kjaer M, Mohr M, Ball D, Bangsbo J: Effect of temperature on skeletal muscle energy turnover during dynamic knee-extensor exercise in humans. J Appl Physiol (1985). 2006 Jul;101(1):47-52. Epub 2006 Mar 2. [PubMed:16514001 ]
- Duffield R, Dawson B, Goodman C: Energy system contribution to 1500- and 3000-metre track running. J Sports Sci. 2005 Oct;23(10):993-1002. [PubMed:16194976 ]
- Hargreaves M: Skeletal muscle metabolism during exercise in humans. Clin Exp Pharmacol Physiol. 2000 Mar;27(3):225-8. [PubMed:10744352 ]
- Crowther GJ, Kemper WF, Carey MF, Conley KE: Control of glycolysis in contracting skeletal muscle. II. Turning it off. Am J Physiol Endocrinol Metab. 2002 Jan;282(1):E74-9. [PubMed:11739086 ]
- Preen D, Dawson B, Goodman C, Beilby J, Ching S: Creatine supplementation: a comparison of loading and maintenance protocols on creatine uptake by human skeletal muscle. Int J Sport Nutr Exerc Metab. 2003 Mar;13(1):97-111. [PubMed:12660409 ]
- Raymer GH, Marsh GD, Kowalchuk JM, Thompson RT: Metabolic effects of induced alkalosis during progressive forearm exercise to fatigue. J Appl Physiol (1985). 2004 Jun;96(6):2050-6. Epub 2004 Feb 6. [PubMed:14766777 ]
- Krustrup P, Mohr M, Amstrup T, Rysgaard T, Johansen J, Steensberg A, Pedersen PK, Bangsbo J: The yo-yo intermittent recovery test: physiological response, reliability, and validity. Med Sci Sports Exerc. 2003 Apr;35(4):697-705. [PubMed:12673156 ]
- Iyo M, Sekine Y, Mori N: Neuromechanism of developing methamphetamine psychosis: a neuroimaging study. Ann N Y Acad Sci. 2004 Oct;1025:288-95. [PubMed:15542729 ]
- Feldman EB: Creatine: a dietary supplement and ergogenic aid. Nutr Rev. 1999 Feb;57(2):45-50. [PubMed:10079702 ]
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