Ursula Liebl

Komponenten des Elektronentransports in Heliobakterien : Identifizierung des Reaktionszentrumsgens und vorläufige Charakterisierung des Cytochrom-bc-Komplexes. (1992)

Liebl, Ursula.

Enth. einen Sonderabdr. aus: FEBS Letters. Vol. 261. 1990, No. 2 u.d.T.: Liebl, Ursula u.a.: Evidence for a unique Rieske iron-sulphur centre in Heliobacterium chlorum

Femtosecond resolution of ligand-heme interactions in the high-affinity quinol oxidase bd: A di-heme active site?

Vos, Marten H., Borisov, Vitaliy B., Liebl, Ursula, Martin, Jean-Louis, Konstantinov, Alexander A.

Interaction of the two high-spin hemes in the oxygen reduction site of the bd-type quinol oxidase from Escherichia coli has been studied by femtosecond multicolor transient absorption spectroscopy....

Ultrafast ligand rebinding in the heme domain of the oxygen sensors FixL and Dos: General regulatory implications for heme-based sensors

Liebl, Ursula, Bouzhir-Sima, Latifa, Négrerie, Michel, Martin, Jean-Louis, Vos, Marten H.

Heme-based oxygen sensors are part of ligand-specific two-component regulatory systems, which have both a relatively low oxygen affinity and a low oxygen-binding rate. To get insight into the...

Functional evidence for active site location of tetrameric thymidylate synthase X at the interphase of three monomers

Leduc, Damien, Graziani, Sébastien, Lipowski, Gerard, Marchand, Christophe, Le Maréchal, Pierre, Liebl, Ursula, ...

Little is known about the catalytic mechanism of the recently discovered ThyX family of flavin-dependent thymidylate synthases that are required for thymidylate (deoxythymidine 5′-monophosphate)...

Electron transfer between hemes in mammalian cytochrome c oxidase

Pilet, Eric, Jasaitis, Audrius, Liebl, Ursula, Vos, Marten H.

Fast intraprotein electron transfer reactions associated with enzymatic catalysis are often difficult to synchronize and therefore to monitor directly in non-light-driven systems. However, in the...

Activationless electron transfer through the hydrophobic core of cytochrome c oxidase

Jasaitis, Audrius, Rappaport, Fabrice, Pilet, Eric, Liebl, Ursula, Vos, Marten H.

Electron transfer (ET) within proteins occurs by means of chains of redox intermediates that favor directional and efficient electron delivery to an acceptor. Individual ET steps are energetically...

Femtosecond resolution of ligand-heme interactions in the high-affinity quinol oxidase bd: A di-heme active site?

Vos, Marten H., Borisov, Vitaliy B., Liebl, Ursula, Martin, Jean-Louis, Konstantinov, Alexander A.

Interaction of the two high-spin hemes in the oxygen reduction site of the bd-type quinol oxidase from Escherichia coli has been studied by femtosecond multicolor transient absorption spectroscopy....

Ultrafast ligand rebinding in the heme domain of the oxygen sensors FixL and Dos: General regulatory implications for heme-based sensors

Liebl, Ursula, Bouzhir-Sima, Latifa, Négrerie, Michel, Martin, Jean-Louis, Vos, Marten H.

Heme-based oxygen sensors are part of ligand-specific two-component regulatory systems, which have both a relatively low oxygen affinity and a low oxygen-binding rate. To get insight into the...

Functional evidence for active site location of tetrameric thymidylate synthase X at the interphase of three monomers

Leduc, Damien, Graziani, Sébastien, Lipowski, Gerard, Marchand, Christophe, Le Maréchal, Pierre, Liebl, Ursula, ...

Little is known about the catalytic mechanism of the recently discovered ThyX family of flavin-dependent thymidylate synthases that are required for thymidylate (deoxythymidine 5′-monophosphate)...

Electron transfer between hemes in mammalian cytochrome c oxidase

Pilet, Eric, Jasaitis, Audrius, Liebl, Ursula, Vos, Marten H.

Fast intraprotein electron transfer reactions associated with enzymatic catalysis are often difficult to synchronize and therefore to monitor directly in non-light-driven systems. However, in the...

Activationless electron transfer through the hydrophobic core of cytochrome c oxidase

Jasaitis, Audrius, Rappaport, Fabrice, Pilet, Eric, Liebl, Ursula, Vos, Marten H.

Electron transfer (ET) within proteins occurs by means of chains of redox intermediates that favor directional and efficient electron delivery to an acceptor. Individual ET steps are energetically...

Subpicosecond oxygen trapping in the heme pocket of the oxygen sensor FixL observed by time-resolved resonance Raman spectroscopy

Kruglik, Sergei G., Jasaitis, Audrius, Hola, Klara, Yamashita, Taku, Liebl, Ursula, Martin, Jean-Louis, ...

Dissociation of oxygen from the heme domain of the bacterial oxygen sensor protein FixL constitutes the first step in hypoxia-induced signaling. In the present study, the photodissociation of the...

Flavin-Dependent Thymidylate Synthase ThyX Activity: Implications for the Folate Cycle in Bacteria▿ †

Leduc, Damien, Escartin, Frédéric, Nijhout, H. Frederik, Reed, Michael C., Liebl, Ursula, Skouloubris, Stéphane, ...

Although flavin-dependent ThyX proteins show thymidylate synthase activity in vitro and functionally complement thyA defects in heterologous systems, direct proof of their cellular functions is...

Flavin-dependent thymidylate synthase X limits chromosomal DNA replication

Escartin, Frédéric, Skouloubris, Stéphane, Liebl, Ursula, Myllykallio, Hannu

We have investigated the hitherto unexplored possibility that differences in the catalytic efficiencies of thymidylate synthases ThyX and ThyA, enzymes that produce the essential DNA precursor dTMP,...