Cytoskeletal changes regulated by the PAK4 serine/threonine kinase are mediated by LIM kinase 1 and cofilin.
Authors: Dan C; Kelly A; Bernard O; Minden A;
Journal:J Biol Chem
PubMed ID:11413130
'PAK4 is the most recently identified member of the PAK family of serine/threonine kinases. PAK4 differs from other members of the PAK family in sequence and in many of its functions. Previously, we have shown that an important function of this kinase is to mediate the induction of filopodia in ... More
Allocation of helper T-cell epitope immunodominance according to three-dimensional structure in the human immunodeficiency virus type I envelope glycoprotein gp120.
Authors: Dai G; Steede N K; Landry S J;
Journal:J Biol Chem
PubMed ID:11551929
'The specificity and intensity of CD4(+) helper T-cell responses determine the effectiveness of immune effector functions. Promiscuously immunodominant helper T-cell epitopes in the human immunodeficiency virus (HIV) envelope glycoprotein gp120 could be important in the development of broadly protective immunity, but the underlying mechanisms of immunodominance and promiscuity remain poorly ... More
Interaction of Fibroblast Growth Factor Receptor 3 and the Adapter Protein SH2-B. A ROLE IN STAT5 ACTIVATION.
Authors: Kong Monica; Wang Ching S; Donoghue Daniel J;
Journal:J Biol Chem
PubMed ID:11827956
'Fibroblast growth factor receptor 3 (FGFR3) influences a diverse array of biological processes, including cell growth, differentiation, and migration. Activating mutations in FGFR3 are associated with multiple myeloma, cervical carcinoma, and bladder cancer. To identify proteins that interact with FGFR3 and which may mediate FGFR3-dependent signaling, a yeast two-hybrid screen ... More
Functional differences between the human ATP-dependent nucleosome remodeling proteins BRG1 and SNF2H.
Authors: Aalfs J D; Narlikar G J; Kingston R E;
Journal:J Biol Chem
PubMed ID:11435432
'ATP-dependent nucleosome remodeling complexes can be grouped into several classes that may differ in their biochemical remodeling activities and biological roles. Although there are a number of biochemical studies of each class of remodeler, there are very little data directly comparing the biochemical activities of remodelers from different classes. We ... More
PIAS1 and PIASxalpha function as SUMO-E3 ligases toward androgen receptor and repress androgen receptor-dependent transcription.
Authors:Nishida T, Yasuda H,
Journal:J Biol Chem
PubMed ID:12177000
The androgen receptor (AR) has been shown to be modified by SUMO-1, a ubiquitin-like protein. Recently we showed that PIAS family proteins function as SUMO-E3 ligases. Here we provide evidence that PIAS1 and PIASxalpha act as specific SUMO-E3 ligases for the AR. PIAS1 and PIASxalpha but not PIAS3 or PIASxbeta ... More