Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. SUBUNIT: Adaptor protein complex 1 (AP-1) is an heterotetramer composed of two large adaptins (gamma1/AP1G1 or gamma2/AP1G2 and beta1A/AP1B1 or beta1B/AP1B1), a medium adaptin (mu1A/AP1M1 or mu1B/AP1M2) and a small adaptin (sigma1A/AP1S1 or sigma1B/AP1S2 or sigma1C/AP1S3).
Cellular Localization:
Golgi apparatus. Cytoplasmic vesicle; cytoplasmic vesicle membrane; peripheral membrane protein; cytoplasmic side. Note=Component of the coat surrounding the cytoplasmic face of coated vesicles located at the Golgi complex.
Alternative Products:
2 named isoforms produced by alternative splicing.
Tissue Specificity:
Widely expressed. DISEASE: Deletion of the AP1B1 gene may play a role in the tumorigenesis of meningiomas. Belongs to the adaptor complexes large subunit family.
Applications:
Suitable for use in Western Blot and Immunohistochemistry. Other applications not tested.
Recommended Dilution:
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot Store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.