Evidence map›Paper›PMID 27438678›Full record

ArticleProtein science : a publication of the Protein Society2016

Biophysical characterization of the domain association between cytosolic A and B domains of the mannitol transporter enzymes II(Mtl) in the presence and absence of a connecting linker.

Ko On Lee, Eun-Hee Kim, Gowoon Kim, Jea Yeon Jung, Shigeru Katayama, Soichiro Nakamura, Jeong-Yong Suh

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

The trial behind it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Ko On LeeDepartment of Agricultural Biotechnology, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 151-742, Republic of Korea.
Eun-Hee KimDivision of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chungbuk, 363-883, Republic of Korea.
Gowoon KimDepartment of Agricultural Biotechnology, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 151-742, Republic of Korea.
Jea Yeon JungDepartment of Agricultural Biotechnology, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 151-742, Republic of Korea.
Shigeru KatayamaDepartment of Bioscience and Biotechnology, Shinshu University, Ina, Nagano, 399-4598, Japan.
Soichiro NakamuraDepartment of Bioscience and Biotechnology, Shinshu University, Ina, Nagano, 399-4598, Japan.
Jeong-Yong SuhDepartment of Agricultural Biotechnology, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 151-742, Republic of Korea. jysuh@snu.ac.kr.
Seoul National University · KRShinshu University · JPKorea Basic Science Institute · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The mannitol transporter enzyme II(Mtl) of the bacterial phosphotransferase system is a multi-domain protein that catalyzes mannitol uptake and phosphorylation. Here we investigated the domain association between cytosolic A and B domains of enzyme II(Mtl) , which are natively connected in Escherichia coli, but separated in Thermoanaerobacter tengcongensis. NMR backbone assignment and residual dipolar couplings indicated that backbone folds were well conserved between the homologous domains. The equilibrium binding of separately expressed domains, however, exhibited ∼28-fold higher affinity compared to the natively linked ones. Phosphorylation of the active site loop significantly contributed to the binding by reducing conformational dynamics at the binding interface, and a few key mutations at the interface were critical to further stabilize the complex by hydrogen bonding and hydrophobic interactions. The affinity increase implicated that domain associations in cell could be maintained at an optimal level regardless of the linker.

Indexed as

Carrier ProteinsCytosolEscherichia coliEscherichia coli ProteinsProtein DomainsThermoanaerobacterCarrier ProteinsEscherichia coli Proteinsdomain associationdomain interfacelinkermulti-domain proteinNMR

Identifiers

PMID27438678
PMCPMC5029529
OpenAlexW2475602946

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.