Solution Structure of a Calmodulin-Binding Domain in the Carboxy-Terminal Region of HIV Type 1 gp160

2008 ◽  
Vol 24 (4) ◽  
pp. 607-616 ◽  
Author(s):  
S.W. Simon Sham ◽  
Jay M. McDonald ◽  
Keith J. Micoli ◽  
N. Rama Krishna
Keyword(s):  
Solution Structure ◽  
Binding Domain ◽  
Terminal Region ◽  
Calmodulin Binding ◽  
Carboxy Terminal Region ◽  
Hiv Type 1 ◽  
Carboxy Terminal

scholarly journals The Carboxy-Terminal Region of apoA-I Is Required for the ABCA1-Dependent Formation of α-HDL But Not Preβ-HDL Particles in Vivo†

Biochemistry ◽  
2007 ◽  
Vol 46 (19) ◽  
pp. 5697-5708 ◽  
Author(s):  
Angeliki Chroni ◽  
Georgios Koukos ◽  
Adelina Duka ◽  
Vassilis I. Zannis
Keyword(s):  
Terminal Region ◽  
Carboxy Terminal Region ◽  
Carboxy Terminal

Characterization of Spi-B, a transcription factor related to the putative oncoprotein Spi-1/PU.1

1992 ◽  
Vol 12 (10) ◽  
pp. 4297-4304 ◽  
Author(s):  
D Ray ◽  
R Bosselut ◽  
J Ghysdael ◽  
M G Mattei ◽  
A Tavitian ◽  
...  
Keyword(s):  
Dna Binding ◽  
Cell Lines ◽  
Binding Domain ◽  
Dna Binding Domain ◽  
New Gene ◽  
Carboxy Terminal Region ◽  
Carboxy Terminal ◽  
Hematopoietic Cell Lines

We have cloned a human cDNA from a new gene, spi-B, on the basis of its homology with the DNA-binding domain of the Spi-1/PU.1 putative oncogene product. spi-B codes for a protein of 262 amino acids presenting 43% overall identity with Spi-1. Its highly basic carboxy-terminal region exhibits 34% sequence identity with the DNA-binding domain of the Ets-1 protein. We showed that the Spi-B protein is able to bind the purine-rich sequence (PU box) recognized by Spi-1/PU.1 and to activate transcription of a reporter plasmid containing PU boxes. Chromosome in situ hybridization allowed us to map spi-B to the 19q13.3-19q13.4 region of the human genome. spi-B, like spi-1, was found to be expressed in various murine and human hematopoietic cell lines except T lymphoid cell lines.

Anti-CD4-Binding Domain Antibodies Complexed with HIV Type 1 Glycoprotein 120 Inhibit CD4+T Cell-Proliferative Responses to Glycoprotein 120

2000 ◽  
Vol 16 (9) ◽  
pp. 893-905 ◽  
Author(s):  
Catarina E. Hioe ◽  
Gareth J. Jones ◽  
Ann D. Rees ◽  
Silvia Ratto-Kim ◽  
Deborah Birx ◽  
...  
Keyword(s):  
T Cell ◽  
Binding Domain ◽  
Cd4 T Cell ◽  
Hiv Type 1

Tubulin folding is altered by mutations in a putative GTP binding motif

1996 ◽  
Vol 109 (6) ◽  
pp. 1471-1478 ◽  
Author(s):  
J.C. Zabala ◽  
A. Fontalba ◽  
J. Avila
Keyword(s):  
Intramolecular Interaction ◽  
Terminal Region ◽  
Binding Motif ◽  
Beta Tubulin ◽  
Alpha Tubulin ◽  
Proposed Model ◽  
Carboxy Terminal Region ◽  
Carboxy Terminal ◽  
Hydrolysis Of

Tubulins contain a glycine-rich loop, that has been implicated in microtubule dynamics by means of an intramolecular interaction with the carboxy-terminal region. As a further extension of the analysis of the role of the carboxy-terminal region in tubulin folding we have mutated the glycine-rich loop of tubulin subunits. An alpha-tubulin point mutant with a T150-->G substitution (the corresponding residue present in beta-tubulin) was able to incorporate into dimers and microtubules. On the other hand, four beta-tubulin point mutants, including the G148-->T substitution, did not incorporate into dimers, did not release monomers, but were able to form C900 and C300 complexes (intermediates in the process of tubulin folding). Three other mutants within this region (which approximately encompasses residues 137–152) were incapable of forming dimers and C300 complexes but gave rise to the formation of C900 complexes. These results suggest that tubulin goes through two sequential folding states during the folding process, first in association with TCP1-complexes (C900) prior to the transfer to C300 complexes. It is this second step that implies binding/hydrolysis of GTP, reinforcing our previous proposed model for tubulin folding and assembly.

scholarly journals THE DISTRIBUTION OF ANTIGENIC DETERMINANTS IN RAT SKIN COLLAGEN

1971 ◽  
Vol 133 (6) ◽  
pp. 1309-1324 ◽  
Author(s):  
Herbert Lindsley ◽  
Mart Mannik ◽  
Paul Bornstein
Keyword(s):  
Terminal Region ◽  
Antigenic Determinants ◽  
Collagen Molecule ◽  
Rat Skin ◽  
Amino Terminal ◽  
Skin Collagen ◽  
Native Collagen ◽  
Carboxy Terminal Region ◽  
Carboxy Terminal ◽  
Hyperimmune Rabbit

Immunological studies of rat skin collagen were carried out with a sensitive and quantitative radioimmunoassay. Hyperimmune rabbit antisera to rat skin collagen and isolated α2 chains were used. Iodine-labeled α chains and CNBr-produced peptides served as test antigens, and native collagen, α chains, and CNBr peptides were employed as inhibitors in the assay. The α1 and α2 chains were immunologically distinct. Although the α1 chain was not immunogenic, antibodies to α1 were detected in antisera to the intact collagen molecule. The major antigenic determinant of the α1 chain was located in α1-CB6 which constitutes the carboxy-terminal region of the chain. The α2 chain contained two non-cross-reacting antigenic determinants, one in the amino-terminal region (α2-CB1) and the other in the carboxy-terminal region (α2-CB5) of the chain. The native collagen molecule was less effective than isolated α chains in inhibiting binding of labeled peptides to antisera, indicating that antigenic determinants were less accessible in the triple helical molecule. These immunologic studies are consistent with preliminary comparative biochemical data which indicate that interspecies structural differences in collagen predominate at both the amino- and carboxy-terminal ends of the chains.

scholarly journals Carboxy-Terminal Region Involved in Activity of Escherichia coli TolC

2001 ◽  
Vol 183 (23) ◽  
pp. 6961-6964 ◽  
Author(s):  
Hiroyasu Yamanaka ◽  
Hiroshi Izawa ◽  
Keinosuke Okamoto
Keyword(s):  
Escherichia Coli ◽  
Amino Acid ◽  
Outer Membrane ◽  
Amino Acid Residue ◽  
Terminal Region ◽  
Transport Activity ◽  
Carboxy Terminus ◽  
Partial Deletion ◽  
Carboxy Terminal Region ◽  
Carboxy Terminal

ABSTRACT The Escherichia coli TolC acts as a channel tunnel in the transport of various molecules across the outer membrane. Partial-deletion studies of tolC revealed that the region extending from the 50th to the 60th amino acid residue from the carboxy terminus plays an important role in this transport activity of TolC.

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