Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule
MarR family proteins regulate the transcription of multiple antibiotic-resistance genes and are widely found in bacteria and archaea. Recently, a new MarR family gene was identified by genome analysis of the psychrophilic bacterium Paenisporosarcina sp. TG-14, which was isolated from sediment-laden...
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International Union of Crystallography
2021
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ftdoajarticles:oai:doaj.org/article:138b293da9254f87a2e0a52c60fff346 2023-05-15T13:34:44+02:00 Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule Jisub Hwang Sun-Ha Park Chang Woo Lee Hackwon Do Seung Chul Shin Han-Woo Kim Sung Gu Lee Hyun Ho Park Sunghark Kwon Jun Hyuck Lee 2021-09-01T00:00:00Z https://doi.org/10.1107/S2052252521005704 https://doaj.org/article/138b293da9254f87a2e0a52c60fff346 EN eng International Union of Crystallography http://scripts.iucr.org/cgi-bin/paper?S2052252521005704 https://doaj.org/toc/2052-2525 2052-2525 doi:10.1107/S2052252521005704 https://doaj.org/article/138b293da9254f87a2e0a52c60fff346 IUCrJ, Vol 8, Iss 5, Pp 842-852 (2021) marr family proteins transcription factors psychrophilic bacteria paenisporosarcina sp. tg-14 palmitic acid conformational change protein structure molecular recognition Crystallography QD901-999 article 2021 ftdoajarticles https://doi.org/10.1107/S2052252521005704 2022-12-31T04:02:59Z MarR family proteins regulate the transcription of multiple antibiotic-resistance genes and are widely found in bacteria and archaea. Recently, a new MarR family gene was identified by genome analysis of the psychrophilic bacterium Paenisporosarcina sp. TG-14, which was isolated from sediment-laden basal ice in Antarctica. In this study, the crystal structure of the MarR protein from Paenisporosarcina sp. TG-14 (PaMarR) was determined at 1.6 Å resolution. In the crystal structure, a novel lipid-type compound (palmitic acid) was found in a deep cavity, which was assumed to be an effector-binding site. Comparative structural analysis of homologous MarR family proteins from a mesophile and a hyperthermophile showed that the DNA-binding domain of PaMarR exhibited relatively high mobility, with a disordered region between the β1 and β2 strands. In addition, structural comparison with other homologous complex structures suggests that this structure constitutes a conformer transformed by palmitic acid. Biochemical analysis also demonstrated that PaMarR binds to cognate DNA, where PaMarR is known to recognize two putative binding sites depending on its molar concentration, indicating that PaMarR binds to its cognate DNA in a stoichiometric manner. The present study provides structural information on the cold-adaptive MarR protein with an aliphatic compound as its putative effector, extending the scope of MarR family protein research. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Marr ENVELOPE(52.117,52.117,-66.400,-66.400) IUCrJ 8 5 842 852 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
marr family proteins transcription factors psychrophilic bacteria paenisporosarcina sp. tg-14 palmitic acid conformational change protein structure molecular recognition Crystallography QD901-999 |
spellingShingle |
marr family proteins transcription factors psychrophilic bacteria paenisporosarcina sp. tg-14 palmitic acid conformational change protein structure molecular recognition Crystallography QD901-999 Jisub Hwang Sun-Ha Park Chang Woo Lee Hackwon Do Seung Chul Shin Han-Woo Kim Sung Gu Lee Hyun Ho Park Sunghark Kwon Jun Hyuck Lee Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
topic_facet |
marr family proteins transcription factors psychrophilic bacteria paenisporosarcina sp. tg-14 palmitic acid conformational change protein structure molecular recognition Crystallography QD901-999 |
description |
MarR family proteins regulate the transcription of multiple antibiotic-resistance genes and are widely found in bacteria and archaea. Recently, a new MarR family gene was identified by genome analysis of the psychrophilic bacterium Paenisporosarcina sp. TG-14, which was isolated from sediment-laden basal ice in Antarctica. In this study, the crystal structure of the MarR protein from Paenisporosarcina sp. TG-14 (PaMarR) was determined at 1.6 Å resolution. In the crystal structure, a novel lipid-type compound (palmitic acid) was found in a deep cavity, which was assumed to be an effector-binding site. Comparative structural analysis of homologous MarR family proteins from a mesophile and a hyperthermophile showed that the DNA-binding domain of PaMarR exhibited relatively high mobility, with a disordered region between the β1 and β2 strands. In addition, structural comparison with other homologous complex structures suggests that this structure constitutes a conformer transformed by palmitic acid. Biochemical analysis also demonstrated that PaMarR binds to cognate DNA, where PaMarR is known to recognize two putative binding sites depending on its molar concentration, indicating that PaMarR binds to its cognate DNA in a stoichiometric manner. The present study provides structural information on the cold-adaptive MarR protein with an aliphatic compound as its putative effector, extending the scope of MarR family protein research. |
format |
Article in Journal/Newspaper |
author |
Jisub Hwang Sun-Ha Park Chang Woo Lee Hackwon Do Seung Chul Shin Han-Woo Kim Sung Gu Lee Hyun Ho Park Sunghark Kwon Jun Hyuck Lee |
author_facet |
Jisub Hwang Sun-Ha Park Chang Woo Lee Hackwon Do Seung Chul Shin Han-Woo Kim Sung Gu Lee Hyun Ho Park Sunghark Kwon Jun Hyuck Lee |
author_sort |
Jisub Hwang |
title |
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
title_short |
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
title_full |
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
title_fullStr |
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
title_full_unstemmed |
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule |
title_sort |
crystal structure of a marr family protein from the psychrophilic bacterium paenisporosarcina sp. tg-14 in complex with a lipid-like molecule |
publisher |
International Union of Crystallography |
publishDate |
2021 |
url |
https://doi.org/10.1107/S2052252521005704 https://doaj.org/article/138b293da9254f87a2e0a52c60fff346 |
long_lat |
ENVELOPE(52.117,52.117,-66.400,-66.400) |
geographic |
Marr |
geographic_facet |
Marr |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
IUCrJ, Vol 8, Iss 5, Pp 842-852 (2021) |
op_relation |
http://scripts.iucr.org/cgi-bin/paper?S2052252521005704 https://doaj.org/toc/2052-2525 2052-2525 doi:10.1107/S2052252521005704 https://doaj.org/article/138b293da9254f87a2e0a52c60fff346 |
op_doi |
https://doi.org/10.1107/S2052252521005704 |
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IUCrJ |
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8 |
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5 |
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842 |
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852 |
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