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Cloning, purification and preliminary X-ray crystallographic analysis of a hypothetical protein, MJ0754, from Methanococcus jannaschii DSM 2661

Authors
Lee, Eun HyeNam, Ki HyunHwang, Kwang Yeon
Issue Date
10월-2009
Publisher
INT UNION CRYSTALLOGRAPHY
Keywords
Ferritin-like diiron-carboxylate proteins; Hypothetical proteins; Methanococcus jannaschii; MJ0754
Citation
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS, v.65, pp.1065 - 1067
Indexed
SCIE
SCOPUS
Journal Title
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS
Volume
65
Start Page
1065
End Page
1067
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119234
DOI
10.1107/S1744309109036562
ISSN
2053-230X
Abstract
The protein encoded by the MJ0754 gene from the archaeon Methanococcus jannaschii DSM 2661 is an unknown hypothetical protein. Two recombinant proteins, MJ0754 (residues 1-185) and MJ0754t (a truncated form of MJ0754, residues 11-185), were cloned from MJ0754, overexpressed as His-tag fusion proteins and purified. The crystals were found to grow under two different conditions and to have two different shapes. The crystal of MJ0754 belonged to space group P6(1), with unit-cell parameters a = b = 127.015, c = 48.929 angstrom, a calculated Matthews coefficient of 2.85 angstrom(3) Da(-1) and two molecules per asymmetric unit. The crystal of MJ0754t belonged to space group C2221, with unit-cell parameters a = 51.915, b = 79.122, c = 93.869 angstrom, a calculated Matthews coefficient of 2.41 angstrom(3) Da(-1) and one molecule per asymmetric unit. The SeMet-labelled P6(1) crystal diffracted to a resolution of 3.1 angstrom, while the native C222(1) crystal diffracted to 1.3 angstrom resolution.
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