J Yanchunas Jr
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Explore the profile of J Yanchunas Jr including associated specialties, affiliations and a list of published articles.
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Articles
8
Citations
150
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Recent Articles
1.
Emanuele Jr J, Jin H, Yanchunas Jr J, Villafranca J
Biochemistry
. 1997 Jun;
36(23):7264-71.
PMID: 9188728
Initial velocity methods were used to probe the kinetic mechanism of Escherichia coli uridine diphosphate-N-acetylmuramate:L-alanine ligase (UNAM:L-Ala ligase). When the activity (in the forward direction) versus substrate concentration data were...
2.
Constantine K, Mueller L, Goldfarb V, Wittekind M, Metzler W, Yanchunas Jr J, et al.
J Mol Biol
. 1997 Apr;
267(5):1223-46.
PMID: 9150408
Backbone-atom resonances have been assigned for both the substrate-free and the NADP+-complexed forms of UDP-N-acetylenolpyruvylglucosamine reductase (MurB), a monomeric, 347-residue (38.5 kDa) flavoenzyme essential for bacterial cell-wall biosynthesis. NMR studies...
3.
Axley M, Fairman R, Yanchunas Jr J, Villafranca J, Robertson J
Biochemistry
. 1997 Jan;
36(4):812-22.
PMID: 9020779
Purified uridine diphosphate N-acetylenolpyruvylglucosamine reductase (E.C. 1.1.1.158) was analyzed by circular dichroism (CD) and UV-visible spectroscopy to establish the spectral properties of its tightly bound flavin adenine dinucleotide (FAD) cofactor....
4.
Farmer 2nd B, Constantine K, Goldfarb V, Friedrichs M, Wittekind M, Yanchunas Jr J, et al.
Nat Struct Biol
. 1996 Dec;
3(12):995-7.
PMID: 8946851
No abstract available.
5.
Ohringer S, Chang C, Sheriff S, Klei H, Sack J, Jacobson B, et al.
Acta Crystallogr D Biol Crystallogr
. 1996 May;
52(Pt 3):586-8.
PMID: 15299687
Uridine 5'-diphospho-N-acetylenolpyruvylglucosamine reductase (MurB), the second enzyme in the peptidoglycan synthetic pathway of Escherichia coli, has been crystallized in two previously unreported forms, one orthorhombic and the other monoclinic. MurB...
6.
Dhalla A, Yanchunas Jr J, Ho H, Falk P, Villafranca J, Robertson J
Biochemistry
. 1995 Apr;
34(16):5390-402.
PMID: 7727397
The Escherichia coli MurB gene encoding UDP-N-acetylenolpyruvylglucosamine reductase was expressed to a level of approximately 100 mg/L as a fusion construct with maltose binding protein. Rapid affinity purification, proteolysis, and...
7.
Dabrowski M, Yanchunas Jr J, Villafranca B, Dietze E, Schurke P, Atkins W
Biochemistry
. 1994 Dec;
33(50):14957-64.
PMID: 7999751
Dodecameric glutamine synthetase (GS) from Escherichia coli assembles into highly ordered supramolecular protein tubes in the presence of several divalent metal ions. The molecular mechanism for this metal-induced self-assembly of...
8.
Yanchunas Jr J, Dabrowski M, Schurke P, Atkins W
Biochemistry
. 1994 Dec;
33(50):14949-56.
PMID: 7999750
Dodecameric glutamine synthetase (GS) from bacteria is formed from two face-to-face hexameric rings of identical subunits. These highly symmetrical aggregates from some bacteria, including Escherichia coli, "stack" in the presence...