TY - JOUR A1 - Zellmer, Sebastian A1 - Pfeil, Wolfgang A1 - Lasch, Jürgen T1 - Interaction of phosphatidylcholine liposomes with the human stratum corneum Y1 - 1995 ER - TY - JOUR A1 - Schwarz, D. A1 - Kissele, P. A1 - Pfeil, Wolfgang A1 - Pisch, S. A1 - Bornscheuer, U. A1 - Schmid, Rolf D. T1 - Evidence that nonbilayer phase probensity of the membrane is important for thr side chain cleavage of cytochrome P450SCC (CYP11A1) Y1 - 1997 ER - TY - JOUR A1 - Schubert, Dieter A1 - Schluckebier, Gerd A1 - Backmann, Jan A1 - Granzien, Joachim A1 - Kisker, Caroline A1 - Choe, Hui-Woog A1 - Hahn, Ulrich A1 - Pfeil, Wolfgang A1 - Saenger, Wolfram T1 - X-ray crystallographic and calorimetric studies of the effects of the mutation Trp59Tyr in ribonuclease T1 Y1 - 1994 ER - TY - JOUR A1 - Roske, Y. A1 - Sunna, A. A1 - Pfeil, Wolfgang A1 - Heinemann, Udo T1 - High-resolution crystal structures of Caldiceflulosiruptor strain Rt8B.4 carbohydrate-binding module CBM27-1 and its complex with mannohexaose N2 - Carbohydrate-binding modules (CBMs) are the most common non-catalytic modules associated with enzymes active in plant cell-wall hydrolysis. Despite the large number of putative CBMs being identified by amino acid sequence alignments, only few representatives have been experimentally shown to have a carbohydrate-binding function. Caldicellulosiruptor strain Rt8B.4 Man26 is a thermostable modular glycoside hydrolase beta-mannanase which contains two non-catalytic modules in tandem at its N terminus. These modules were recently shown to function primarily as beta- mannan-binding modules and have accordingly been classified as members of a novel family of CBMs, family 27. The N- terminal CBM27 (CsCBM27-1) of Man26 from Caldicellulosiruptor Rt8B.4 displays high-binding affinity towards mannohexaose with a K-a of 1 x 10(7) M-1. Accordingly, the high-resolution crystal structures of CsCBM27-1 native and its mannohexaose complex were solved at 1.55 Angstrom and 1.06 Angstrom resolution, respectively. In the crystal, CsCBM27-1 shows the typical beta-sandwich jellyroll fold observed in other CBMs with a single metal ion bound, which was identified as calcium. The crystal structures reveal that the overall fold of CsCBM27-1 remains virtually unchanged upon sugar binding and that binding is mediated by three solvent-exposed tryptophan residues and few direct hydrogen bonds. Based on binding affinity and thermal unfolding experiments this structural calcium is shown to play a role in the thermal stability of CsCBM27-1 at high temperatures. The higher binding affinity of CsCBM27-1 to mannooligosaccharides when compared to other members of CBM family 27 might be explained by the different orientation of the residues forming the "aromatic platform" and by differences in the length of loops. Finally, evidence is presented, on the basis of fold similarities and the retention of the position of conserved motifs and a calcium ion, for the consolidation of related CBM families into a superfamily of CBMs. (C) 2004 Elsevier Ltd. All rights reserved Y1 - 2004 SN - 0022-2836 ER - TY - JOUR A1 - Rishi, Vikas A1 - Anjum, Farah A1 - Ahmad, Faizan A1 - Pfeil, Wolfgang T1 - Role of non-compatible osmolytes in the stabilization of proteins during heat stress Y1 - 1998 ER - TY - JOUR A1 - Pfeil, Wolfgang A1 - Nölting, Bengt A1 - Jung, Christiane T1 - Apocytochrome P450cam is a native protein with some intermediate-like properties Y1 - 1993 ER - TY - JOUR A1 - Pfeil, Wolfgang A1 - Nölting, Bengt A1 - Jung, Christiane T1 - Thermodynmic properties of apocytochrome P450cam Y1 - 1993 ER - TY - JOUR A1 - Pfeil, Wolfgang A1 - Gesierich, Ulrike A1 - Sterner, Reinhard T1 - The 4Fe-4S ferredoxin from thermotoga maritima is extremely thermostable Y1 - 1996 ER - TY - JOUR A1 - Pfeil, Wolfgang A1 - Gesierich, Ulrike A1 - Kleemann, G. R. A1 - Sterner, Reinhard T1 - Ferredoxin from the hyperthermophiele thermotoga maritima os stable beyond the boiling point of watter Y1 - 1997 ER - TY - JOUR A1 - Pfeil, Wolfgang A1 - Burova, Tatjana V. A1 - Beckert, Vita A1 - Uhlmann, Heike A1 - Ristau, Otto A1 - Bernhardt, Rita T1 - Conformational stability of adrenodoxin mutant proteins Y1 - 1996 ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - The influence of glycosylation on the thermal stability of ribonuclease Y1 - 2002 ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - Thermodynamics of apocytochrome b5 unfolding Y1 - 1993 ER - TY - BOOK A1 - Pfeil, Wolfgang T1 - Protein stability and folding : a collection of thermodynamic data Y1 - 1998 SN - 3-540-63717-6 PB - Springer CY - Berlin ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - Is the molten globule a third thermodynamic state of protein? : the exemplare of à-Lactalbumin Y1 - 1998 ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - Partly folded proteins (Minireview) Y1 - 1998 SN - 0320-9725 ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - Thermodynamische Untersuchungen an Proteinen Y1 - 1996 ER - TY - JOUR A1 - Pfeil, Wolfgang T1 - Native-like intermediates in protein folding Y1 - 1994 ER - TY - BOOK A1 - Pfeil, Wolfgang T1 - Protein stability and folding : a collecton of thermodynamic data ; Supplement 1 Y1 - 2001 SN - 3-540-42168-8 PB - Springer CY - Berlin ER - TY - JOUR A1 - Lasch, Jürgen A1 - Zellmer, Sebastian A1 - Pfeil, Wolfgang A1 - Schubert, Rolf T1 - Interaction of liposomes with the human skin lipid barrier : hSCLLs as model system - DSC of intact stratum corneum and in situ CLSM of human skin Y1 - 1995 ER - TY - JOUR A1 - Krylov, Andrey V. A1 - Pfeil, Wolfgang A1 - Lisdat, Fred T1 - Denaturation and renaturation of cytochrome c immobilized on gold electrodes in DMSO-containing buffers N2 - Cytochrome c (cyt c) was immobilized on surface-modified gold electrodes using a self-assembling approach. The resulting cyt c electrode was studied using cyclic voltammetry. Compared to pure phosphate buffer, cyt c electrodes exhibited in DMSO-containing solutions lower oxidation and reduction peak currents, which originated from a decrease in the addressable electro-active amount of the surface-immobilized protein. This is associated with the process of protein denaturation. The denaturation kinetics can be described by a sum of two processes with time constants differing by more than one order of magnitude. The subsequent change of the aqueous/organic medium back to a pure aqueous buffer resulted in a shift of the formal potential to its initial value and a partial recovery of the peak current. This can be attributed to the renaturation of the cyt c. The extent of renaturation depended on the organic solvent/water ratio of the mixture used. The kinetics of protein renaturation were similar to those of the denaturation process. (C) 2004 Elsevier B.V. All rights reserved Y1 - 2004 ER -