Noxious pH triggers pungent taste and nocifensive behavior. While the mechanisms underlying acidic pH sensation have been extensively characterized, little is known about how animals sense alkaline pH in the environment. TMC genes encode a family of evolutionarily conserved membrane proteins whose functions are largely unknown. Here, we characterize C. elegans TMC-1, which was suggested to form...

Lactide-based polymers have been widely investigated as materials for tissue engineering. However, characteristics such as low flexibility and elongation tend to limit particular applications, although these can be enhanced by adding plasticizers such as trimethylene carbonate (TMC) to the polymer chain of the copolymer poly(L-lactide-co-D,L-lactide) (PLDLA). The aim of this work was to synthes...

We report the generation and spectroscopic characterization of a heterobimetallic [(TMC)Fe(III)-O-Cr(III)(OTf)4] species (1) by bubbling O2 into a mixture of Fe(TMC)(OTf)2 and Cr(OTf)2 in NCCH3. Complex 1 also formed quantitatively by adding Cr(OTf)2 to [Fe(IV)(O)(TMC)(NCCH3)](2+). The proposed O2 activation mechanism involves the trapping of a Cr-O2 adduct by Fe(TMC)(OTf)2.

1 9-Deformyl derivatives of desmycosin 1 16-membered macrolide antibiotics lacking an aldehyde group with strong activity against Gram-positive aerobes, anaerobes and mycoplasmas.3) Among the derivatives, 19-deformyl-4'deoxydesmycosin (TMC-016) has been shown to be 4to 7-fold more potent than erythromycin against Gram-positive bacterial infections in experimental animals. 3) In this study we in...

We report the Cu(I)/O2 chemistry of complexes derived from the macrocylic ligands 14-TMC (1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane) and 12-TMC (1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane). While [(14-TMC)Cu(I)](+) is unreactive towards dioxygen, the smaller analog [(12-TMC)Cu(I)(CH3CN)](+) reacts with O2 to give a side-on bound peroxo-dicopper(II) species ((S)P), confirme...

Tautomycetin (TMC) is a novel activated T-cell-specific immunosuppressive compound with a unique structure, containing an ester bond linkage between a terminal cyclic anhydride moiety and a linear polyketide chain bearing an unusual terminal alkene. A 3 kb gene, tmcN, with a deduced product of 1029 amino acid residues, located on the 3'-terminus of an approximately 70 kb contiguous TMC biosynth...

A mononuclear high-valent trans-dioxoruthenium(VI) complex, trans-[Ru(VI)(TMC)(O)2](2+) (TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), was synthesized and characterized by various spectroscopic techniques and X-ray crystallography. The reactivity of the trans-[Ru(VI)(TMC)(O)2](2+) complex was investigated in hydride transfer and hydrogen atom transfer reactions. The mechanism o...

This study was to investigate the preventive effect of taemyeongcheong (TMC, a Korean traditional health drink) on acetaminophen (APAP, 800 mg/kg BW)-induced hepatic damage in ICR mice. TMC is prepared from Saururus chinensis, Taraxacum officinale, Zingiber officinale, Cirsium setidens, Salicornia herbacea, and Glycyrrhizae. A high dose of TMC (500 mg/kg BW) was found to decrease APAP-induced i...

Quaternized chitosans, N,N,N-trimethylchitosans (TMC) with different degree of quaternization were synthesized by reacting methyl iodide with chitosan. The reaction was confirmed by FT-IR and 1H-NMR characterization. Antimicrobial assay showed that the prepared TMC had potent biocidal effects against planktonic Gram-positive bacteria Staphylococcus epidermidis, Gram-negative bacteria Escherichi...

Our objective was to identify predictors of improved postthaw semen quality in men with testicular cancer banking sperm for fertility preservation. We reviewed 173 individual semen samples provided by 67 men with testicular germ cell tumor (TGCT) who cryopreserved sperm before gonadotoxic treatment between 1994 and 2010 at our tertiary university medical center. Our main outcomes measures were ...