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Light-induced structural changes and the site of O=O bond formation in PSII caught by XFEL
TLDR
The structural changes in PSII induced by two-flash illumination at room temperature at a resolution of 2.35 Å are described, providing a mechanism for the O=O bond formation consistent with that proposed previously.
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Grease matrix as a versatile carrier of proteins for serial crystallography
TLDR
A grease-matrix carrier for protein microcrystals is introduced and the structures of lysozyme, glucose isomerase, thaumatin and fatty acid–binding protein type 3 are obtained under ambient conditions at a resolution of or finer than 2 Å.
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Developments in biotechnological production of sweet proteins.
TLDR
Information on the structure-sweetness relationship for these proteins would help not only in the clarification of the mechanism of interaction of sweet-tasting proteins with their receptors, but also in the design of more effective low-calorie sweeteners.
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Oil-free hyaluronic acid matrix for serial femtosecond crystallography
TLDR
A grease-free, water-based hyaluronic acid matrix is introduced that was able to produce electron density maps at 2.3-Å resolution for proteinase K and lysozyme proteins.
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Redox-coupled proton transfer mechanism in nitrite reductase revealed by femtosecond crystallography
TLDR
A redox-coupled proton switch model is proposed, which provides an explanation for proton-Coupled electron transfer (PCET) in CuNiR and demonstrates the potential of SFX as a powerful tool to study redox processes in metalloenzymes.
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Native sulfur/chlorine SAD phasing for serial femtosecond crystallography
Sulfur SAD phasing facilitates the structure determination of diverse native proteins using femtosecond X-rays from free-electron lasers via serial femtosecond crystallography.
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Hydroxyethyl cellulose matrix applied to serial crystallography
TLDR
A hydroxyethyl cellulose-matrix carrier is introduced, to determine the structure of three proteins, and the de novo structure determination of proteinase K from single-wavelength anomalous diffraction by utilizing the anomalous signal of the praseodymium atom was demonstrated.
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Five amino acid residues in cysteine-rich domain of human T1R3 were involved in the response for sweet-tasting protein, thaumatin.
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The trial for production of fresh cheese incorporated probiotic Lactobacillus acidophilus group lactic acid bacteria.
The present study is an attempt to produce a useful fresh cheese as a new food carrier for delivering probiotic Lactobacillus (L) acidophilus or L.gasseri cells to the human intestine. The tested…
Sweetness and enzymatic activity of lysozyme.
TLDR
The findings indicate that a specific protein property of lysozyme is required for sweetness elicitation and that the enzymatic activity and carbohydrates produced by enzyme reaction are not related to the sweet taste.
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