[English] 日本語
![](img/lk-miru.gif)
- SASDB27: Chimeric EcRHH-RcPutA: The E.coli Proline utilization A RHH domai... -
+
Open data
-
Basic information
Entry | ![]() |
---|---|
![]() | Chimeric EcRHH-RcPutA: The E.coli Proline utilization A RHH domain fused to R.capsulatus PutA
|
Biological species | ![]() ![]() ![]() |
![]() | ![]() Title: Engineering a trifunctional proline utilization A chimaera by fusing a DNA-binding domain to a bifunctional PutA. Authors: Benjamin W Arentson / Erin L Hayes / Weidong Zhu / Harkewal Singh / John J Tanner / Donald F Becker / ![]() Abstract: Proline utilization A (PutA) is a bifunctional flavoenzyme with proline dehydrogenase (PRODH) and Δ-pyrroline-5-carboxylate (P5C) dehydrogenase (P5CDH) domains that catalyses the two-step oxidation ...Proline utilization A (PutA) is a bifunctional flavoenzyme with proline dehydrogenase (PRODH) and Δ-pyrroline-5-carboxylate (P5C) dehydrogenase (P5CDH) domains that catalyses the two-step oxidation of proline to glutamate. Trifunctional PutAs also have an N-terminal ribbon-helix-helix (RHH) DNA-binding domain and moonlight as autogenous transcriptional repressors of the put regulon. A unique property of trifunctional PutA is the ability to switch functions from DNA-bound repressor to membrane-associated enzyme in response to cellular nutritional needs and proline availability. In the present study, we attempt to construct a trifunctional PutA by fusing the RHH domain of Escherichia coli PutA (EcRHH) to the bifunctional Rhodobacter capsulatus PutA (RcPutA) in order to explore the modular design of functional switching in trifunctional PutAs. The EcRHH-RcPutA chimaera retains the catalytic properties of RcPutA while acquiring the oligomeric state, quaternary structure and DNA-binding properties of EcPutA. Furthermore, the EcRHH-RcPutA chimaera exhibits proline-induced lipid association, which is a fundamental characteristic of functional switching. Unexpectedly, RcPutA lipid binding is also activated by proline, which shows for the first time that bifunctional PutAs exhibit a limited form of functional switching. Altogether, these results suggest that the C-terminal domain (CTD), which is conserved by trifunctional PutAs and certain bifunctional PutAs, is essential for functional switching in trifunctional PutAs. |
![]() |
|
-
Structure visualization
-
Downloads & links
-Data source
SASBDB page | ![]() |
---|
-Models
-
Sample
![]() | Name: Chimeric EcRHH-RcPutA: The E.coli Proline utilization A RHH domain fused to R.capsulatus PutA Specimen concentration: 6.00-6.00 |
---|---|
Buffer | Name: 50 mM Tris, 200 mM NaCl, 0.5 mM Tris(3-hydroxypropyl)phosphine pH: 7.5 |
Entity #429 | Name: PutA / Type: protein / Description: Proline utilization A / Formula weight: 125.528 / Num. of mol.: 2 / Source: Escherchia coli, Rhodobacter capsulatus Sequence: MGSSHHHHHH SSGLVPRGSH MGTTTMGVKL DDATRERIKS AATRIDRTPH WLIKQAIFSY LEQLENSDTL PEHMTDLSAL GPKAKFAPEA EVLQALVAQA ALPQPQLDRI AARGADLVAR IRAEAKPSLM EHFLAQYGLS TREGVALMCL AEAMLRVPDT ATIDALIEDK ...Sequence: MGSSHHHHHH SSGLVPRGSH MGTTTMGVKL DDATRERIKS AATRIDRTPH WLIKQAIFSY LEQLENSDTL PEHMTDLSAL GPKAKFAPEA EVLQALVAQA ALPQPQLDRI AARGADLVAR IRAEAKPSLM EHFLAQYGLS TREGVALMCL AEAMLRVPDT ATIDALIEDK IAPSDWGKHL GTAASSLVNA STWALMLTGK VLDDGAGGIA GTLRGAMRRL GEPVIRAAVG QAMREMGRQF VLGETIEKAL ERAEKREAEG YTFSYDMLGE AALTAADAER YRLAYAQAIT AIGKAATRGS IAANPGISIK LSALHPRYEV AQEARVMAEL VPVVRDLARA AARAGIALHI DAEEQDRLAL SLRVMAAVIA DPETAGWEGF GAVVQAYGKR AGAAIDALAA MARAAGRRIN IRLVKGAYWD AEMKRAQVEG HPGFPLFTSK TGTDVAYICL AAKLFGLNDC IYPQFATHNA HTVAAVLEMA AGRPFEFQRL HGMGARLHDI VLRETGGRCR IYAPVGAHRD LLAYLVRRLL ENGANSSFVN QIVNESVPPA EVAACPFAAL PTARAPRGLL APADLFGAGR VNAQGFDLSD PEVLARIEAA RDVTLPDAAP IVAGPVSGTL RPVRNPATGA VVAQVTEADA ATVALALDAA QVWSAPAATR AAVLCRAADL YEENFGPIFA ALAQEAGKTL GDAVSELREA VDFLRYYAAE GAADTRPPRG AVVAISPWNF PLAIFTGQVA AALMAGNAVL AKPAEQTPII AALAVRLLHQ AGVPETALQL LPGDGPTVGA ALTRDPRVAG VVFTGSTETA QIIARAMAAH LAPGTPLIAE TGGLNAMVVD STALPEQAVR DVVASAFRSA GQRCSALRCL YVQDDIAPHL IGMLKGAMEE LVSGDPARLS TDVGPVIDAE AKAGIETYLA ANKARILHRS TAPEGGHFVA PALLQVGGIA DLEREIFGPV LHLATFAAED LPAVIAAINA RGYGLTFGLH SRIDARVETV AETIRAGNIY VNRNQIGAVV GSQPFGGEGL SGTGPKAGGP LYLNRFYAPE PVVAVGGWTE AATPILPEAR ETQLDEIFLP GPTGELNRLT RHQRGPILCL GPGAEAASAQ AAAVVALGGQ AVQASGAVSP KALETLTPLA GVLWWGAAEM GRAYAQALAV RPGPLVPLIT AKPDLAHVAH ERHLCVDTTA AGGNAALLAG |
-Experimental information
Beam | Instrument name: Advanced Light Source (ALS) 12.3.1 (SIBYLS) City: Berkeley, CA / 国: USA ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Detector | Name: MAR 165 CCD | ||||||||||||||||||||||||||||||||||||
Scan |
| ||||||||||||||||||||||||||||||||||||
Distance distribution function P(R) |
| ||||||||||||||||||||||||||||||||||||
Result |
|