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Pamela Bjorkman

From Alfawiki
Pamela Jane Bjorkman
BornTemplate:Birth year and age
Portland, Oregon, U.S.
Occupation(s)Biochemist, molecular biologist, structural biologist
Known forStructural biology of MHC proteins; immune defense research
Notable workFirst crystal structure of human histocompatibility antigen HLA-A2

Pamela Jane Bjorkman NAS, AAAS (also known as Pamela J. Björkman; born 1956, Portland, Oregon) is a distinguished American biochemist and molecular biologist. She holds the position of David Baltimore Professor of Biology and Biological Engineering at the California Institute of Technology (Caltech). Her scientific investigations center on elucidating the three-dimensional architecture of proteins linked to the Class I MHC—Major Histocompatibility Complex—and their role in immune defense against viruses, with the goal of improving therapeutic interventions. Bjorkman is widely acknowledged as a trailblazer in the field of structural biology.

Early life and education

Born in 1956 in Parkrose, Portland, Oregon, Bjorkman demonstrated an early passion for science. She initially enrolled at Willamette University for one academic year before transferring to the University of Oregon, where she completed a B.A. degree in chemistry. During her undergraduate studies, she gained laboratory experience working with Larry Church at Reed College and O. Hayes Griffith at the University of Oregon.

In 1978, she commenced doctoral studies in biochemistry at Harvard University, mentored by structural biologist Don Craig Wiley, with a focus on x-ray crystallography. She was awarded her PhD in 1984 and remained in Wiley’s laboratory as a postdoctoral fellow. There, she achieved the first determination of an MHC protein’s crystal structure—the human histocompatibility antigen HLA-A2. This seminal discovery was published in 1987, initially resolved at 3.5Å and subsequently refined to 2.6Å resolution.

Career and Research

Following her PhD, Bjorkman undertook postdoctoral research at Stanford University within Mark Davis’s laboratory, investigating how T-cell receptors recognize antigens presented by MHC proteins and formulating a molecular model explaining this interaction. During her time at Stanford, she married neurobiologist Kai Zinn, who is currently a professor at Caltech; together they have two children.

In 1989, Bjorkman joined Caltech’s Biology faculty as an assistant professor, receiving tenure in 1995 and promotion to full professor by 1998. She was an investigator with the HHMI from 1989 until 2015. In 2018, she was appointed David Baltimore Professor of Biology and Biological Engineering and later named Merkin Institute professor in 2021.

The Bjorkman Laboratory at Caltech focuses on understanding immune responses to viral pathogens with the aim of advancing vaccines and therapeutic strategies. Their research targets viruses such as HIV-1, influenza, hepatitis C, and since the onset of the COVID-19 pandemic, SARS-CoV-2. During the COVID-19 crisis, Bjorkman collaborated with Michel Nussenzweig to analyze the structure of coronavirus spike proteins, providing critical insights for vaccine development against new variants.

Her team utilizes techniques including x-ray crystallography, electron microscopy, cryo-electron microscopy, and fluorescence microscopy to characterize viral envelope glycoproteins and other molecular structures essential for virus recognition. Their work also encompasses designing antibody reagents and creating mosaic nanoparticles aimed at generating broadly protective vaccines.

Bjorkman’s research has been featured in leading scientific publications such as Nature and Science.

Awards

External links

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