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Cited by 411

The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.

Three-Dimensional Structures of the Ligand-Binding Domain of the Bacterial Aspartate Receptor with and Without a Ligand

Open access
Milburn, Michael V., Privé, Gilbert G., Milligan, Daniel L., Scott, William G., Yeh, Joanne, Jancarik, Jarmila, Koshland, Daniel E., Kim, Sung-Hou·1991·Science

Abstract

The three-dimensional structure of an active, disulfide cross-linked dimer of the ligand-binding domain of the " Salmonella typhimurium aspartate receptor and that of an aspartate complex have been determined by x-ray crystallographic methods at 2.4 and 2.0 angstrom (Å) resolution, respectively. A single subunit is a four-α-helix bundle with two long amino-terminal and carboxyl-terminal helices and two shorter helices that form a cylinder 20 Å in diameter and more than 70 Å long. The two subunits in the disulfide-bonded dimer are related by a crystallographic twofold axis in the apo structure, but by a noncrystallographic twofold axis in the aspartate complex structure. The latter structure reveals that the ligand binding site is located more than 60 Å from the presumed membrane surface and is at the interface of the two subunits. Aspartate binds between two α helices from one subunit and one α helix from the other in a highly charged pocket formed by three arginines. The comparison of the apo and aspartate complex structures shows only small structural changes in the individual subunits, except for one loop region that is disordered, but the subunits appear to change orientation relative to each other. The structures of the two forms of this protein provide a step toward understanding the mechanisms of transmembrane signaling.

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Metadata

Authors
Milburn, M. V., Privé, G. G., Milligan, D. L., Scott, W. G., Yeh, J., Jancarik, J., Koshland, D. E., & Kim, S.-H.
Venue
Science
Published
1991-11-29
Volume
254
Issue
5036
Pages
1342-1347
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2082928276
Cited by
411
References
31
FWCI
9.51
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Three-Dimensional Structures of the Ligand-Binding Domain of the Bacterial Aspartate Receptor with and Without a Ligand. https://app.cochat.ai/papers/10.1126/science.1660187
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Milburn, M. V., Privé, G. G., Milligan, D. L., Scott, W. G., Yeh, J., Jancarik, J., Koshland, D. E., & Kim, S.-H. (1991). Three-Dimensional Structures of the Ligand-Binding Domain of the Bacterial Aspartate Receptor with and Without a Ligand. Science. https://doi.org/10.1126/science.1660187

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