Amino acid contribution to protein solubility: Asp, Glu, and Ser contribute more favorably than the other hydrophilic amino acids in RNase Sa

SR Trevino, JM Scholtz, CN Pace - Journal of molecular biology, 2007 - Elsevier
Poor protein solubility is a common problem in high-resolution structural studies, formulation
of protein pharmaceuticals, and biochemical characterization of proteins. One popular …

Increasing protein conformational stability by optimizing β-turn sequence

SR Trevino, S Schaefer, JM Scholtz, CN Pace - Journal of molecular …, 2007 - Elsevier
Protein conformational stability is an important concern in many fields. Here, we describe a
strategy for significantly increasing conformational stability by optimizing β-turn sequence …

[HTML][HTML] The contribution of polar group burial to protein stability is strongly context-dependent

K Takano, JM Scholtz, JC Sacchettini… - Journal of Biological …, 2003 - ASBMB
We previously suggested that proteins gain more stability from the burial and hydrogen
bonding of polar groups than from the burial of nonpolar groups (Pace, CN (2001) …

The effect of net charge on the solubility, activity, and stability of ribonuclease Sa

KL Shaw, GR Grimsley, GI Yakovlev… - Protein …, 2001 - Wiley Online Library
The net charge and isoelectric pH (pI) of a protein depend on the content of ionizable groups
and their pK values. Ribonuclease Sa (RNase Sa) is an acidic protein with a pI= 3.5 that …

Tyrosine hydrogen bonds make a large contribution to protein stability

CN Pace, G Horn, EJ Hebert, J Bechert, K Shaw… - Journal of molecular …, 2001 - Elsevier
The aim of this study was to gain a better understanding of the contribution of hydrogen
bonds by tyrosine-OH groups to protein stability. The amino acid sequences of RNases Sa …

[HTML][HTML] Toward a molecular understanding of protein solubility: increased negative surface charge correlates with increased solubility

RM Kramer, VR Shende, N Motl, CN Pace, JM Scholtz - Biophysical journal, 2012 - cell.com
Protein solubility is a problem for many protein chemists, including structural biologists and
developers of protein pharmaceuticals. Knowledge about how intrinsic factors influence …

[HTML][HTML] Osmolytes stabilize ribonuclease S by stabilizing its fragments S protein and S peptide to compact folding-competent states

GS Ratnaparkhi, R Varadarajan - Journal of Biological Chemistry, 2001 - ASBMB
Osmolytes stabilize proteins to thermal and chemical denaturation. We have studied the
effects of the osmolytes sarcosine, betaine, trimethylamine-N-oxide, and taurine on the …

Measuring and increasing protein solubility

SR Trevino, JM Scholtz, CN Pace - Journal of pharmaceutical sciences, 2008 - Elsevier
High concentration protein delivery is difficult to achieve for several protein pharmaceuticals
due to low solubility. In this review, we discuss different types of low protein solubility …

Thermodynamic and structural studies of cavity formation in proteins suggest that loss of packing interactions rather than the hydrophobic effect dominates the …

GS Ratnaparkhi, R Varadarajan - Biochemistry, 2000 - ACS Publications
The hydrophobic effect is widely believed to be an important determinant of protein stability.
However, it is difficult to obtain unambiguous experimental estimates of the contribution of …

The design and production of semisynthetic ribonucleases with increased thermostability by incorporation of S‐peptide analogues with enhanced helical stability

C Mitchinson, RL Baldwin - Proteins: Structure, Function, and …, 1986 - Wiley Online Library
Recent work has shown that, with synthetic analogues of C‐peptide (residues 1–13 of
ribonuclease A), the stability of the peptide helix in H2O depends strongly on the charge on …