Catalog # CM5011

CLASP1 (C-terminus) Antibody

Rat Monoclonal

Application / Dilution

Size 100 μl

Species Reactivity Hu, Rt, Ms, Ck, F

MW 161 kDa

Isotype IgG2a



The microtubule (MT) plus-end is a crucial site for the regulation of MT dynamics and interactions by several groups of plus-end tracking proteins (+TIPs). These +TIPs form comet-like accumulations at the plus ends of MTs to regulate MT dynamics and interactions with organelles and macromolecular complexes. The +TIPs include diverse groups of proteins, such as motor and nonmotor proteins, MT polymerases and depolymerases as well as various regulatory and adaptor proteins. The CLIP-associated protein (CLASP) family includes CLASP1 and CLASP2 proteins, which are expressed as long (α) and short (β) isoforms. Thse +TIPs conatin an N-terminal TOG domain, multiple TOG-like domains, and a basic and serine-rich motif (SxIP). The TOG domain facilitates interaction with tubulin dimers, while the SxIP motif promotes interaciton with EB1 and MTs. A C-terminal domain is involved in interaction with CLIPs, as well as several other proteins. CLASPs are MT stabilizing fators that localize to mitotic spindles, kinetochores, and the midbody. CLASPs are important for cell division, and may regulate cell migration and neuronal growth cone motility.


Al-Bassam, J. & Chang, F. (2011) Trends Cell Biol. 21(10):604.
Gouveia, S.M. & Akhmanova, A. (2010) Int Rev Cell Mol Biol. 285:1-74.

Western blot of CLASP1 in mouse brain (lane 1) and rat PC12 cells (lane 2). The blots were probed with rat monoclonal CM5011 anti-CLASP1 (C-terminus) at a dilution of 1:500. Then detected using donkey anti-Rat IgG:HRP (RS3101).

Clone KT66 was generated from a GST fusion protein containing the C-terminus of mouse CLASP1. This sequence is highly conserved in human, rat, chicken, and fish CLASP1, and has low homology to CLASP2.

*For more information, see UniProt Accession Q80TV8
Rat monoclonal antibody purified with protein G chromatography is supplied in 100µl phosphate-buffered saline and 0.05% sodium azide. Aliquot and Store at –20°C. Stable for 1 year.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

The antibody detects a 161 kDa* protein corresponding to the molecular mass of CLASP1 on SDS-PAGE immunoblots of human HeLa, mouse brain, and rat PC12 cells. The antibody also detects CLASP1 by immunocytochemistry in HeLa cells.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: