Results 51 to 60 of about 212,752 (309)

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

A Convenient Synthesis of Amino Acid Methyl Esters

open access: yesMolecules, 2008
A series of amino acid methyl ester hydrochlorides were prepared in good toexcellent yields by the room temperature reaction of amino acids with methanol in thepresence of trimethylchlorosilane. This method is not only compatible with natural aminoacids,
Yaowu Sha, Jiabo Li
doaj   +1 more source

Study on the self-assembly of aromatic antimicrobial peptides based on different PAF26 peptide sequences

open access: yese-Polymers, 2022
Antimicrobial peptide (AMP) self-assembly is an effective way to synthesis antimicrobial biomaterials. In previous studies, we found PAF26 AMP (Ac-RKKWFW-NH2) and its derivative K2–F2 peptide (Ac-KKRKKWFWFF-NH2) could both self-assemble into hydrogels ...
Cao Fengyi   +5 more
doaj   +1 more source

Semi-Rational Design of L-Isoleucine Dioxygenase Generated Its Activity for Aromatic Amino Acid Hydroxylation

open access: yesMolecules, 2023
Fe (II)-and 2-ketoglutarate-dependent dioxygenases (Fe (II)/α-KG DOs) have been applied to catalyze hydroxylation of amino acids. However, the Fe (II)/α-KG DOs that have been developed and characterized are not sufficient.
Jianhong An, Jiaojiao Guan, Yao Nie
doaj   +1 more source

Postprandial Levels of Branch Chained and Aromatic Amino Acids Associate with Fasting Glycaemia [Elektronisk resurs]

open access: yes, 2016
High fasting plasma concentrations of isoleucine, phenylalanine, and tyrosine have been associated with increased risk of hyperglycaemia and incidence of type 2 diabetes. Whether these associations are diet or metabolism driven is unknown.
Nilsson, Jeanette   +7 more
core   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

The tyrosine transporter of Toxoplasma gondii is a member of the newly defined apicomplexan amino acid transporter (ApiAT) family.

open access: yesPLoS Pathogens, 2019
Apicomplexan parasites are auxotrophic for a range of amino acids which must be salvaged from their host cells, either through direct uptake or degradation of host proteins. Here, we describe a family of plasma membrane-localized amino acid transporters,
Kathryn E R Parker   +7 more
doaj   +1 more source

Structure and function of the aromatic amino acid hydroxylases [PDF]

open access: yesBiochemical Journal, 1995
INTRODUCTION The three aromatic amino acid hydroxylases, phenylalanine hydroxylase (PheOH; EC 1.14.16.1), tyrosine hydroxylase (TyrOH; EC 1.14.16.2) and tryptophan hydroxylase (TrpOH; EC 1.14.16.4), constitute a family of enzymes that share many physical, structural and catalytic properties.
S E, Hufton, I G, Jennings, R G, Cotton
openaire   +2 more sources

Effect of aromatic amino acids, pentylenetetrazole and yohimbine on isatin and tribulin activity in rat brain

open access: yes, 1991
The effects of i.p. injection of 3 aromatic amino acids and two anxiogenic agents on rat brain isatin concentration and tribulin (endogenous monoamine oxidase inhibitor) activity were investigated.
Bhattacharya, S.K.   +5 more
core   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

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