DnaA-HU complex

A protein-DNA complex containing DNA-bound DnaA attached to HU. HU is a dimer encoded by two closely related genes. Essential for the initiation of replication in bacteria; stimulates the DnaA-dependent unwinding of oriC.

HU-DNA complex

A protein-DNA complex that consists of HU heterodimers (an alpha and a beta chain) assembled into octamers along DNA. HU binds to double-stranded DNA in a structure- and sequence-specific manner and bends the DNA into a nucleosome-like structure.

B-1b B cell differentiation

The process in which B cells acquire the specialized features of B-1b B cells. B-1b B cells are B-1 cells that do not express CD5.

B-1a B cell differentiation

The process in which B cells acquire the specialized features of B-1a B cells. B-1a B cells are B-1 cells that express CD5 and arise from fetal liver precursors.

B-1 B cell proliferation

The expansion of a B-1 B cell by cell division. Follows B cell activation.

B-1 B cell lineage commitment

The process in which an immature B cell becomes committed to become a B-1 B cell.

intraciliary transport particle B binding

Binding to an intraciliary transport particle B (IFT B) complex.

obsolete pheophytinase b activity

OBSOLETE. Catalysis of the reaction: pheophytin b + H2O = H+ + pheophorbide b + phytol.

follicular B cell differentiation

The process in which a B cell in the spleen acquires the specialized features of a follicular B cell. Follicular B cells are major population of mature recirculating B cells in the spleen and are located in the B-cell follicle region.

activin B complex

A nonsteroidal regulator, composed of two covalently linked inhibin beta-B subunits (sometimes known as activin beta-B or activin/inhibin beta-B).