Dr. Harry Gray

Professor

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Biography

Harry B. Gray is the Arnold O. Beckman Professor of Chemistry at the California Institute of Technology, where he has been a faculty member since 1966. He is known for his seminal contributions to bioinorganic chemistry, particularly in the field of electron transfer mechanisms in biological systems. Gray's early research led to significant discoveries regarding metal-oxo complexes and the concept of 'non-innocent' ligands, which play a crucial role in the reactivity of metal centers in proteins. His studies have advanced our understanding of long-range electron transfer, a fundamental process in biological energy transduction. One of his notable findings is that long-distance electron transport requires multiple hole-tunneling steps, termed 'hole hopping.' Gray's research also focuses on the binding interactions of metal ions with regions of proteins that are intrinsically disordered, such as nonstructural protein-1 (Nsp1) of SARS-CoV-2, aiming to develop strategies to inhibit viral replication. He has published over 950 research papers and received numerous prestigious awards, including the National Medal of Science and several honorary doctorates. Gray has served as a mentor to hundreds of students and postdocs throughout his career and has significantly impacted the field of chemistry globally.

Research Interests

Experience

Arnold O. Beckman Professor

1981-01-01 — Present

California Institute of Technology • Pasadena, CA

Served as the Arnold O. Beckman Professor of Chemistry, focusing on bioinorganic electron transfer chemistry.

Chairman

1978-01-01 — 1984-01-01

Division of Chemistry and Chemical Engineering • Pasadena, CA

Oversaw the division, promoting research and education in chemical engineering and chemistry.

Director

1986-01-01 — 2001-01-01

Beckman Institute • Pasadena, CA

Directed the Beckman Institute, fostering interdisciplinary research.

Awards

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National Medal of Science

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Gibbs Medal

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Harvey Prize

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Wolf Prize

Requirements for California Institute of Technology

Doctorate Program
Requirements
TOEFL
Total
Required:100
IELTS
Overall
Required:7
Prerequisites
Bachelor's degree or equivalent Strong background in mathematics and physical sciences
Application Checklist
  • Online Application
  • Statement of Purpose
  • Three Letters of Recommendation
  • Transcripts
  • Resume/CV
Specialization Notes

Most Caltech graduate programs are PhD-only. GRE General and Subject tests vary by department; many have made them optional or no longer accept them.