The NBC Islands gag

The electrogenic Na+/HCO3- cotransporter, NBC.

Electrogenic Na(+)/HCO(3)(-) (NBC) function has been characterized in many mammalian tissues including, kidney, pancreas, and brain. Cloning efforts identified a single cDNA, NBC/NBC1, that possesses all the functional attributes of the electrogenic Na(+)/HCO(3)(-) cotransporter. This NBC clone is related to the anion exchangers and thus forms a bicarbonate transporter superfamily. Presently tw...

C-NBC: Neighborhood-Based Clustering with Constraints

Clustering is one of most important methods of data mining. It is used to identify unknown yet interesting and useful patterns or trends in datasets. There are different types of clustering algorithms such as partitioning, hierarchical, grid and density-based. In general, clustering methods are considered unsupervised, however, in recent years the new branch of clustering algorithms has emerged...

New insights into retroviral Gag–Gag and Gag–membrane interactions

A critical aspect of viral replication is the assembly of virus particles, which are subsequently released as progeny virus. While a great deal of attention has been focused on better understanding this phase of the viral life cycle, many aspects of the molecular details remain poorly understood. This is certainly true for retroviruses, including that of the human immunodeficiency virus type 1 ...

Generation of the Ahlfors Five Islands Theorem

A Generalization of Rota's NBC Theorem

We generalize Rota's theorem characterizing the Mobius function of a geometric lattice in terms of subsets of atoms containing no broken circuit and give applications to the weak Bruhat order of a nite Coxeter group and the Tamari lattices. We also give a direct proof of the fact that in the geometric case any total order of the atoms can be used. Simple involutions are used in both proofs. Fi...