Column: Directions in Discovery - Chromatography Online

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Column: Directions in Discovery
Tim Wehr is staff scientist at Bio-Rad Laboratories, Hercules, California. Direct correspondence about this column to Direct correspondence about this column to Directions in Discovery, LCGC, Woodbridge Corporate Plaza, 485 Route 1 South, Building F, First Floor, Iselin, NJ 08830, e-mail lcgcedit@lcgcmag.com.
  • Enriching the Phosphoproteome



    This installment of "Directions in Discovery" will review current phosphorylation enrichment techniques with a focus on new developments.

    Recent Developments in High-Abundance Protein Removal Techniques



    In the last year, two new protein depletion products have been introduced, and these will be the focus of this month's installment of "Directions in Discovery."

    Quantitative Proteomics: Available Tools and Results of Collaborative Study



    Quantitative assessment of protein expression in biological systems in response to perturbations is an important element in the discovery and validation of biomarkers and drug targets. This can be a challenging task given the complexity and dynamic range of biological extracts. Many methods are currently in use to address protein quantification. This installment of "Directions in Discovery" reviews several of the more popular ones and reports on a collaborative study organized by the Association of Biomolecular Resource Facilities.

    HPLC-Based Measurements of Various Lipophilicity Parameters to Aid Drug Design



    Fast, reliable measurements of lipophilicity has a great impact on the compounds' selection process at an early stage of dug discovery. The guest columnit examines HPLC methods for this purpose.

    Top-Down versus Bottom-Up Approaches in Proteomics


    Top-down and bottom-up are alternative strategies for protein identification and characterization by mass spectrometry. How do they fit into the world of proteomics? What are their implications for separation technology? These questions are addressed in this installment of "Directions in Discovery."

    Top-Down versus Bottom-Up Approaches in Proteomics TEST


    Top-down and bottom-up are alternative strategies for protein identification and characterization by mass spectrometry. How do they fit into the world of proteomics? What are their implications for separation technology? These questions are addressed in this installment of "Directions in Discovery."

    Top-Down versus Bottom-Up Approaches in Proteomics



    September 2006. Top-down and bottom-up are alternative strategies for protein identification and characterization by mass spectrometry. How do they fit into the world of proteomics? What are their implications for separation technology? These questions are addressed in this installment of "Directions in Discovery."

    A NanoLC-MS Primer for Expression Proteomics: Part II



    This is the second installment of a two-part series on the practical aspects of configuring and operating a nano liquid chromatography-mass spectrometry (LC-MS) system.

    A NanoLC-MS Primer for Expression Proteomics, Part I



    The first of a two-part series addresses HPLC pumps, sample introduction systems, and columns for nanoLC-MS.

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