Cell cycle-regulated phosphorylation of the Xenopus polo-like kinase Plx1.
Authors: Kelm Olaf; Wind Mathias; Lehmann Wolf D; Nigg Erich A;
Journal:J Biol Chem
PubMed ID:11994303
'Polo-like kinases (Plks) control multiple important events during M phase progression, but little is known about their activation during the cell cycle. The activities of both mammalian Plk1 and Xenopus Plx1 peak during M phase, and this activation has been attributed to phosphorylation. However, no phosphorylation sites have previously been ... More
Variola virus immune evasion design: expression of a highly efficient inhibitor of human complement.
Authors: Rosengard Ariella M; Liu Yu; Nie Zhiping; Jimenez Robert;
Journal:Proc Natl Acad Sci U S A
PubMed ID:12077314
'Variola virus, the most virulent member of the genus Orthopoxvirus, specifically infects humans and has no other animal reservoir. Variola causes the contagious disease smallpox, which has a 30-40% mortality rate. Conversely, the prototype orthopoxvirus, vaccinia, causes no disease in immunocompetent humans and was used in the global eradication of ... More
Alternate interactions define the binding of peptides to the MHC molecule IA(b).
Authors: Liu Xinqi; Dai Shaodong; Crawford Frances; Fruge Rachel; Marrack Philippa; Kappler John;
Journal:Proc Natl Acad Sci U S A
PubMed ID:12084926
'We have solved the crystal structure of the MHCII molecule, IA(b), containing an antigenic variant of the major IA(b)-binding peptide derived from the MHCII IEalpha chain. The four MHC pockets at p1, p4, p6, and p9 that usually bind peptide side chains are largely empty because of alanines in the ... More
Identification and characterization of three members of the human metallocarboxypeptidase gene family.
'Amino acid homology searches of the human genome revealed three members of the metallocarboxypeptidase (metallo-CP) family that had not been described in the literature in addition to the 14 known genes. One of these three, named CPA5, is present in a gene cluster with CPA1, CPA2, and CPA4 on chromosome ... More