Préparation et Determination Structurale de la Forme Haute Temperature de KH2PO4

Falah, Chiraz; Smiri-Dogguy, L.; Driss, Ahmed; Jouini, Tahar

doi:10.1006/jssc.1998.7999

Cited by 9 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 8-fold coordination (of six PO 4 groups) is characteristic of phases I, II, II′, III, A and C; 13,15a,16,18 in phase B ten oxygen atoms lie around K1 in the 2.755(2)-3.285(2) Å range (Table S2 †). 17 The compression of KDP phases well agrees with the previous high-pressure studies (Fig. 4).…”

supporting

confidence: 91%

“…16 A similar monoclinic form B, space group P2 1 /c, clearly related to the form A in this way that its structure is slightly distorted and the unit-cell is doubled along axis [y]. 17 Another monoclinic phase C, space group P2 1 , has been obtained from the KOH solution ( pH = 7) of KH 2 PO 4 and K 4 P 2 O 7 in molar ratio 1 : 1. 18 In all KDP phases at 296 K the H-atoms are dynamically disordered.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Structure of the high-pressure phase IV of KH₂PO₄(KDP)

Cai

Katrusiak

2013

Dalton Trans.

View full text Add to dashboard Cite

show abstract

supporting

confidence: 91%

mentioning

confidence: 99%

Structure of the high-pressure phase IV of KH₂PO₄(KDP)

Cai

Katrusiak

2013

Dalton Trans.

View full text Add to dashboard Cite

show abstract

“…There are many known examples of such temperature-related phase transitions. For instance, crystals of KH 2 PO 4 are monoclinic to 293 K, tetragonal below and become orthorhombic at 122 K (Falah et al, 1998). Another example is the classic case of NH 4 NO 3 crystals, which show five different forms, with the orthorombic form IV stable between 255 and 305 K and changing to another orthorhombic form III above 305 K, but to the tetragonal form V below 255 K (Lucas et al, 1979).…”

Section: Unit Cell Crystal Channels and Reciprocal Spacementioning

confidence: 99%

Effect of crystal freezing and small-molecule binding on internal cavity size in a large protein: X-ray and docking studies of lipoxygenase at ambient and low temperature at 2.0 Å resolution

Skrzypczak‐Jankun

Borbulevych

Zavodszky

et al. 2006

Acta Crystallogr D Biol Cryst

View full text Add to dashboard Cite

Flash-freezing is a technique that is commonly used nowadays to collect diffraction data for X-ray structural analysis. It can affect both the crystal and molecular structure and the molecule's surface, as well as the internal cavities. X-ray structural data often serve as a template for the protein receptor in docking calculations. Thus, the size and shape of the binding site determines which small molecules could be found as potential ligands in silico, especially during high-throughput rigid docking. Data were analyzed for wild soybean lipoxygenase-3 (MW 97 kDa) at 293 and 93 K and compared with the results from studies of its molecular complexes with known inhibitors, structures published by others for a derivative of the same enzyme (98 K) or a topologically close isozyme lipoxygenase-1 (at ambient temperature and 100 K). Analysis of these data allows the following conclusions. (i) Very small changes in the relative orientation of the molecules in the crystal can cause major changes in the crystal reciprocal lattice. (ii) The volume of the internal cavities can ;shrink' by several percent upon freezing even when the unit-cell and the protein molecular volume show changes of only 1-2%. (iii) Using a receptor structure determined based on cryogenic data as a target for computational screening requires flexible docking to enable the expansion of the binding-site cavity and sampling of the alternative conformations of the crucial residues.

show abstract

“…The transition of phases has been investigated experimentally and theoretically by different research groups 6, 7. It has also been reported that at 453 K the phase of the KDP crystal changes from tetragonal to monoclinic 8, 9…”

Section: Introductionmentioning

confidence: 91%

Patient selection for hemiablative focal therapy of prostate cancer

Polascik

Mayes

Schroeck

et al. 2009

Cancer

View full text Add to dashboard Cite

Poly(benzyl‐L‐glutamate) (PBLG) macromonomers were synthesized by N‐carboxyanhydride (NCA) polymerization initiated with 4‐vinyl benzylamine. MALDI‐ToF analysis confirmed the presence of styrenic end‐groups in the PBLG. Free‐radical and RAFT polymerization of the macromonomer in the presence of divinyl benzene produced star polymers of various molecular weights, polydispersity, and yield depending on the reaction conditions applied. The highest molecular weight (Mw) of 10,170,000 g/mol was obtained in a free‐radical multibatch approach. It was shown that the PBLG star polymers can be deprotected to obtain poly(glutamic acid) star polymers, which form water soluble pH responsive nanoparticles. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010

show abstract

Préparation et Determination Structurale de la Forme Haute Temperature de KH2PO4

Cited by 9 publications

References 8 publications

Structure of the high-pressure phase IV of KH₂PO₄(KDP)

Structure of the high-pressure phase IV of KH₂PO₄(KDP)

Effect of crystal freezing and small-molecule binding on internal cavity size in a large protein: X-ray and docking studies of lipoxygenase at ambient and low temperature at 2.0 Å resolution

Patient selection for hemiablative focal therapy of prostate cancer

Contact Info

Product

Resources

About

Préparation et Determination Structurale de la Forme Haute Temperature de KH2PO4

Cited by 9 publications

References 8 publications

Structure of the high-pressure phase IV of KH2PO4(KDP)

Structure of the high-pressure phase IV of KH2PO4(KDP)

Effect of crystal freezing and small-molecule binding on internal cavity size in a large protein: X-ray and docking studies of lipoxygenase at ambient and low temperature at 2.0 Å resolution

Patient selection for hemiablative focal therapy of prostate cancer

Contact Info

Product

Resources

About

Structure of the high-pressure phase IV of KH₂PO₄(KDP)

Structure of the high-pressure phase IV of KH₂PO₄(KDP)