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AnaSpec Introduces New Anti-Keratin Antibodies - AnaSpec has introduced two keratin antibodies that recognize both the intact and caspase digested N-terminal of K18 and K19 at Asp237
AnaSpec Introduces New Anti-Keratin Antibodies

 

NewswireToday - /newswire/ - San Jose, CA, United States, 2008/07/02 - AnaSpec has introduced two keratin antibodies that recognize both the intact and caspase digested N-terminal of K18 and K19 at Asp237.

   
 
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AnaSpec has introduced two keratin antibodies that recognize both the intact and caspase digested N-terminal of K18 and K19 at Asp237. These antibodies are useful tools for studying keratin dynamics in mice undergoing hepatocyte apoptosis, patients with cirrhosis, and also in apoptotic cells of various epithelial human tumors in a non-invasive manner.

Intermediate filaments (IFs), together with actin microfilaments and tubulin microtubules, comprise the three major cytoskeletal networks that are found in most eukaryotic cells.1 Keratins, which are the largest IF protein subgroup, can be divided into the acidic type I (K9-K20) and basic type II (K1-K8) Keratins.2 Typically, epithelial cells express at least one of each type, and the proteins exist in the cells as noncovalent obligate heteropolymers. Keratin networks are highly dynamic and reorganized during cell differentiation, mitosis and apoptosis, and also play important cytoprotective and structural support roles for the cell.3,4 During apoptosis, the epithelial keratins 18 and 19 undergo caspase-mediated proteolysis, leading to the disassembly of the nuclear envelope and cytoplasmic IF networks.5 K18 and K19 undergo caspase-cleavage at the conserved Asp237 in their rod domains.5,6 In contrast to other type I keratins, K18 is unique in that it includes another caspase-cleavage site at Asp396 of the carboxy-terminal domain.7

Rabbit anti-human Keratin-18 (Asp237) or anti-human Keratin-19 (Asp237) polyclonal antibodies were raised against a synthetic peptide corresponding to an internal sequence surrounding amino acid 237 (GLTVEVD) of human Keratin-18 or amino acid 237 (QVSVEVD) of human Keratin-19, respectively. Anti-Keratin 18 reacts to both cleaved keratin-18 (Asp237) (29 kDa) and intact Keratin-18 (49 kDa) proteins from anisomycin-treated human colonic carcinoma HT29 cell lysate and Fas antibody-induced mouse liver lysate (see figure below).6 This antibody also reacts to cleaved Keratin-19 (Asp237) (29 kDa).6 Anti-Keratin 19 reacts to both cleaved keratin-19 (Asp237) (29 kDa) and intact Keratin-19 (45 kDa) proteins from anisomycin-treated human colonic carcinoma HT29 cell lysate.6

This antibody also reacts to cleaved Keratin-18 (Asp237) (29 kDa).6 Both antibodies are human, mouse, and monkey reactive.
Anti-Keratin-18 (Asp237); human NEW 250 µL 55148A;
Anti-Keratin-19 (Asp237); human NEW 250 µL 55149A.

About AnaSpec, Inc.
AnaSpec, Inc. is a leading provider of integrated proteomics solutions to pharmaceutical, biotech, and academic research institutions throughout the world. With a vision for innovation through synergy, AnaSpec focuses on three core technologies: peptides, detection reagents (dyes, assay kits, & antibodies), and combinatorial chemistry.

 
 
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Written by / Agency / Source: AnaSpec, Inc.

 
 

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AnaSpec Introduces New Anti-Keratin Antibodies

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Publisher Contact: Ping Yang 
408-452-5055 ping[.]anaspec.com
 
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IMPORTANT INFORMATION: Issuance, publication or distribution of this press release in certain jurisdictions could be subject to restrictions. The recipient of this press release is responsible for using this press release and the information herein in accordance with the applicable rules and regulations in the particular jurisdiction. This press release does not constitute an offer or an offering to acquire or subscribe for any AnaSpec, Inc. securities in any jurisdiction including any other companies listed or named in this release.

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