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B1 cells are a sub-class of B cell lymphocytes that are involved in the humoral immune response. They are not part of the adaptive immune system , as they have no memory, but otherwise, B1 cells perform many of the same roles as other B cells: making antibodies against antigens and acting as antigen-presenting cells .
Cyclin B1 is a regulatory protein involved in mitosis.The gene product complexes with p34 to form the maturation-promoting factor (MPF).Two alternative transcripts have been found, a constitutively expressed transcript and a cell cycle-regulated transcript that is expressed predominantly during G2/M phase of the cell cycle.
Cytochrome b is a protein found in the membranes of aerobic cells. In eukaryotic mitochondria (inner membrane) and in aerobic prokaryotes, cytochrome b is a component of respiratory chain complex III (EC 1.10.2.2) — also known as the bc1 complex or ubiquinol-cytochrome c reductase.
3181 53379 Ensembl ENSG00000122566 ENSMUSG00000004980 UniProt P22626 O88569 RefSeq (mRNA) NM_002137 NM_031243 NM_016806 NM_182650 RefSeq (protein) NP_002128 NP_112533 NP_058086 NP_872591 NP_001361674 Location (UCSC) Chr 7: 26.17 – 26.2 Mb Chr 6: 51.46 – 51.47 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Heterogeneous nuclear ribonucleoproteins A2/B1 is a protein that in humans ...
Regulatory B cells (Bregs or B reg cells) represent a small population of B cells that participates in immunomodulation and in the suppression of immune responses. The population of Bregs can be further separated into different human or murine subsets such as B10 cells, marginal zone B cells, Br1 cells, GrB + B cells, CD9 + B cells, and even some plasmablasts or plasma cells.
The basis of their structure is 18-20 tandem repeats of the HEAT motif. Each one of these repeats contains two antiparallel alpha helices linked by a turn, which stack together to form the overall structure of the protein. [9] In order to transport cargo into the nucleus, importin-β must associate with the nuclear pore complexes.
Diffusion vs. Transport. In biology, an ion transporter is a transmembrane protein that moves ions (or other small molecules) across a biological membrane to accomplish many different biological functions, including cellular communication, maintaining homeostasis, energy production, etc. [1] There are different types of transporters including pumps, uniporters, antiporters, and symporters.
Transitional B cells are B cells at an intermediate stage in their development between bone marrow immature cells and mature B cells in the spleen.Primary B cell development takes place in the bone marrow, where immature B cells must generate a functional B cell receptor (BCR) and overcome negative selection induced by reactivity with autoantigens. [1]