Determination of disulfide structure in agouti-related protein (AGRP) by stepwise reduction and alkylation.
Authors:Bures EJ, Hui JO, Young Y, Chow DT, Katta V, Rohde MF, Zeni L, Rosenfeld RD, Stark KL, Haniu M
Journal:Biochemistry
PubMed ID:9724530
The agouti-related protein gene (Agrp) plays an important role in body weight regulation. The mature human protein is a single polypeptide chain of 112 amino acid residues, consisting of an N-terminal acidic region and a unique C-terminal cysteine-rich domain. The disulfide structure of recombinant human AGRP was determined by chemical ... More
Dynamic conformations compared for IgE and IgG1 in solution and bound to receptors.
Authors:Zheng Y, Shopes B, Holowka D, Baird B
Journal:Biochemistry
PubMed ID:1387320
'Dynamic conformations of two distinct immunoglobulin (Ig) isotypes, murine IgE and human IgG1, were examined with fluorescence resonance energy transfer measurements. The IgE mutant epsilon/C gamma 3* and the IgG1 mutant gamma/C gamma 3* each bind [5-(dimethylamino)naphthalen-1-yl]sulfonyl (DNS) in two identical antigen binding sites at the amino (N)-terminal ends of ... More
Arrangement of the COOH-terminal and NH2-terminal domains of caldesmon bound to actin.
Authors:Graceffa P
Journal:Biochemistry
PubMed ID:9092808
'Smooth muscle caldesmon is a single polypeptide chain with its NH2- and COOH-terminal domains separated by a long alpha-helix. Caldesmon was labeled at either Cys-153 in the NH2 domain or Cys-580 in the COOH domain with a variety of fluorescence probes. Fluorescence intensity, peak position, and polarization of probes on ... More
Nuclear import of Cdk/cyclin complexes: identification of distinct mechanisms for import of Cdk2/cyclin E and Cdc2/cyclin B1.
Authors:Moore JD, Yang J, Truant R, Kornbluth S
Journal:J Cell Biol
PubMed ID:9922449
'Reversible phosphorylation of nuclear proteins is required for both DNA replication and entry into mitosis. Consequently, most cyclin-dependent kinase (Cdk)/cyclin complexes are localized to the nucleus when active. Although our understanding of nuclear transport processes has been greatly enhanced by the recent identification of nuclear targeting sequences and soluble nuclear ... More