Structure of "phytic acids"

Johnson, L. F.; Tate, Max E.

doi:10.1139/v69-008

Cited by 224 publications

(68 citation statements)

References 5 publications

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“…The material soluble in trichloroacetic acid has a C, H, and P content close to that reported by Johnson and Tate (14) for trihydrated sodium phytate (C, 7.6%; H, 1.8%; P, 19.1%). Furthermore, this compound moves similarly to authentic sodium phytate under high voltage electrophoresis under the conditions described by Johnson and Tate (14). This acid-soluble component of spherosomes is most likely a salt of phytic acid.…”

Section: Methodssupporting

confidence: 82%

Composition and Structure of Protein Bodies and Spherosomes Isolated from Ungerminated Seeds of Sorghum bicolor (Linn.) Moench

Adams¹,

Novellie²

1975

Plant Physiol.

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Protein bodies and spherosomes have been isolated from mature seeds of Sorghum bicolor (Linn.) Moench by a procedure which successfully disrupts the protein starch complex in the grain. Protein bodies from whole grain are 68% protein and have a distinct border and a monolithic appearance. Those from embryo are 95% protein and have diffuse borders, vacuoles, and appear very granular. Aleurone tissue protein bodies are 46% protein with a structure similar to those from embryo, but possibly are composed of a protein carbohydrate mixture. Spherosomes from all sources are quite similar in composition and structure. They have an average composition of 27% protein, 12% phosphorus, and 8.6% metals. Microscopically, they appear as small vesicles bounded by-a wall which is probably composed of protein and the potassium. magnesium salt of phytic acid.

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Section: Methodssupporting

confidence: 82%

Composition and Structure of Protein Bodies and Spherosomes Isolated from Ungerminated Seeds of Sorghum bicolor (Linn.) Moench

Adams¹,

Novellie²

1975

Plant Physiol.

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“…The intracellular level of Ins (1,3,4)P3 is assumed to range from 1.1 uM (basal) to 3.6 /M (stimulated) [24]. Therefore [25] and other avian cells, also occurs in murine macrophages [26], bovine adrenal glomerulosa cells [27] and differentiated HL-60 cells [16]. In avian and some mammalian cells, Ins (3,4,5,6) [16].…”

Section: Resultsmentioning

confidence: 99%

Properties of a soluble inositol 1,3,4,5-tetrakisphosphate 3-phosphatase from porcine brain

Höer

Oberdisse

1990

Biochemical Journal

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We have previously shown that Ins(1,3,4,5)P4 is degraded to Ins(1,4,5)P3 by a soluble Ins(1,3,4,5)P4 3-phosphatase from pig brain [Hoer, Kwiatkowski, Seib, Rosenthal, Schultz & Oberdisse (1988) by Mg2" up to 30 mm or Ca2l up to 1 mm. Commercially available Ins(3,4,5,6)P4 from turkey erythrocytes produced a marked inhibition of the 3-phosphatase (Ki 500 nM). Significant inhibitory effects on enzyme activity were also found with GTP and the pyrimidine nucleotides UTP and CTP. The kinetic data presented here suggest that the Ins(1,3,4,5)P4 3-phosphatase may be regulated by the intracellular concentrations of inositol tris-and tetrakis-phosphates.

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“…Again, these peaks were also clearly seen in the 31 P NMR spectra of the other soils, A1055, A1056 and A1057 and in fact, these two myo-IP 6 peaks were the most prominent peaks in the phosphomonoester region of soil A1057. Two smaller peaks, at d 5.7 ppm (where it appeared as a shoulder on the much larger orthophosphate peak) and at d 4.3 ppm can also be attributed to myo-IP 6 , a molecule that contains six phosphate groups and has an axis of symmetry that results in a 1 : 2 : 2 : 1 pattern of 31 P NMR peaks (Johnson and Tate 1969). Peaks at d 5.0 and d 4.6 ppm were also present in all spectra, and were particularly prominent for soil A1055.…”

Section: Quantitative Analysis and Interpretation Of 31 P Nmr Spectramentioning

confidence: 99%

The composition of organic phosphorus in soils of the Snowy Mountains region of south-eastern Australia

2017

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Abstract. Few studies have considered the influence of climate on organic phosphorus (P) speciation in soils. We used sodium hydroxide-ethylenediaminetetra-acetic acid (NaOH-EDTA) soil extractions and solution 31 P nuclear magnetic resonance spectroscopy to investigate the soil P composition of five alpine and sub-alpine soils. The aim was to compare the P speciation of this set of soils with those of soils typically reported in the literature from other cold and wet locations, as well as those of other Australian soils from warmer and drier environments. For all alpine and sub-alpine soils, the majority of P detected was in an organic form (54-66% of total NaOH-EDTA extractable P). Phosphomonoesters comprised the largest pool of extractable organic P (83-100%) with prominent peaks assigned to myo-and scyllo-inositol hexakisphosphate (IP 6 ), although trace amounts of the neo-and D-chiro-IP 6 stereoisomers were also present. Phosphonates were identified in the soils from the coldest and wettest locations; a-and b-glycerophosphate and mononucleotides were minor components of organic P in all soils. The composition of organic P in these soils contrasts with that reported previously for Australian soils from warm, dry environments where inositol phosphate (IP 6 ) peaks were less dominant or absent and humic-P and a-and b-glycerophosphate were proportionally larger components of organic P. Instead, the soil organic P composition exhibited similarities to soils from other cold, wet environments. This provides preliminary evidence that climate is a key driver in the variation of organic P speciation in soils.

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Structure of "phytic acids"

Cited by 224 publications

References 5 publications

Composition and Structure of Protein Bodies and Spherosomes Isolated from Ungerminated Seeds of Sorghum bicolor (Linn.) Moench

Composition and Structure of Protein Bodies and Spherosomes Isolated from Ungerminated Seeds of Sorghum bicolor (Linn.) Moench

Properties of a soluble inositol 1,3,4,5-tetrakisphosphate 3-phosphatase from porcine brain

The composition of organic phosphorus in soils of the Snowy Mountains region of south-eastern Australia

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