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 Results for DC.creator="S." AND DC.creator="A." AND DC.creator="Islam" in section 12.1.5 of volume F
Protein chemistry of heavy-atom reagents
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5, pp. 321-324 [ doi:10.1107/97809553602060000837 ]
... chemistry of heavy-atom reagents The heavy-atom data bank (Islam et al., 1998) can be used to analyse the most ... acetate The heavy-atom data bank can be used as a source of information about the reactivity of proteins to different ... Hard cations | | Uranyl-ion complexes have proved the most popular A-group metal reagents for preparing heavy-atom derivatives of ...

Iodine
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.6, p. 324 [ doi:10.1107/97809553602060000837 ]
... markers to assist main-chain tracing and to act as a probe for surface residues. The order of reactivity towards these ... as chloramine T, can be added to KI, typically in a concentration ratio of 1:50; alternatively, polystyrene beads derivatized with ...

Hydrophobic heavy-atom reagents
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.5, pp. 323-324 [ doi:10.1107/97809553602060000837 ]
... substitution, addition or removal of the non-heavy-atom component(s) of the reagent can alter the hydrophilic-hydrophobic balance and ... the cation RHg+ easier. R is often chosen to be a small aliphatic group (e.g. CH3, C2H5). However, the presence of a benzene ring enhances the stability of the heavy-atom ...

Electrostatic binding of heavy-atom anions
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.4, p. 323 [ doi:10.1107/97809553602060000837 ]
Electrostatic binding of heavy-atom anions 12.1.5.4. Electrostatic binding of heavy-atom anions Positively charged groups of proteins, such as the [alpha]-amino terminus, -amino of lysine, guanidinium of arginine and imadazolium of histidine, may form ion pairs with heavy-atom anionic complexes. For example, and can bind through electrostatic interactions. ...

B-metal reagents
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.3, pp. 321-323 [ doi:10.1107/97809553602060000837 ]
... alkali metal salt (e.g. ) will often convert the compound to a more soluble anionic complex of the type , where X = Cl ... Sasaki et al., 1975). Where the metal ion displaces a proton, Ag+ will need to react at a higher pH than Hg2+. Figure 12.1.5.3 | | The binding ...

Thallium and lead ions
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.2, p. 321 [ doi:10.1107/97809553602060000837 ]
... states, Tl(I) and Pb(II), when they resemble class A metals. Owing to the non-group valence and presence of ... Tl+ (1.44) and Pb2+ (1.21) are greater than most class A metals. Thallous and plumbous cations prefer carboxylate rather than imidazole ...

Hard cations
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.1, p. 321 [ doi:10.1107/97809553602060000837 ]
... Hard cations Uranyl-ion complexes have proved the most popular A-group metal reagents for preparing heavy-atom derivatives of protein crystals (see Table 12.1.5.1). is a linear, covalent group based on U(VI), the most stable ... or 2 + 6 coordination, with ligands lying in or near a plane normal to the O=U=O2+ axis. These ...

Polynuclear reagents
Carvin, D., Islam, S. A., Sternberg, M. J. E. and Blundell, T. L.  International Tables for Crystallography (2012). Vol. F, Section 12.1.5.7, p. 324 [ doi:10.1107/97809553602060000837 ]
... Halloran et al., 1987) requires the addition of reagents with a greater number of electrons, preferably in a compact polynuclear structure. Such reagents may be either cluster compounds ... Polynuclear reagents should preferably be covalently bound to one or a few specific sites, either first in solution or later ...

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