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Signaling & Structural Biology
- The A20 cDNA Induced by Tumor
Necrosis Factor Alpha Encodes a Novel Type of Zinc Finger Protein
(1990) |PubMed|PDF|
- The NF1 Locus Encodes a Protein Functionally
Related to Mammalian GAP and Yeast Ira Proteins (1990)
|PubMed|PDF|
- A Repeating Amino Acid Motif in
CDC23 Defines a Family of Proteins and a New Relationship among
Genes Required for Mitosis and RNA Synthesis (1990)
|PubMed|PDF|
- Structure and Evolution of a
Human Erythroid Transcription Factor (1990) |PubMed|PDF|
- sar1, a Gene from
Schizosaccharomyces pombe Encoding a Protein That Regulates ras1 (1991) |PubMed|PDF|
- TPR Proteins as Essential
Components of the Yeast Cell Cycle (1991) |PubMed|PDF|
- Analysis of Conserved Domains and Sequence Motifs
in Cellular Regulatory Proteins and Locus Control Regions Using New
Software Tools for Multiple Alignment and Visualization (1992)
|PubMed|PDF|
- Novel Repetitive Sequence Motifs
in the Alpha and Beta Subunits of Prenyl-Protein Transferases and
Homology of the Alpha Subunit to the Mad2 Gene Product of Yeast (1992) |PubMed|PDF|
- Proto-Vav and Gene Expression
(1992) |PubMed|PDF|
- Influence of Guanine Nucleotides
on Complex Formation between Ras and Cdc25 Proteins (1993) |PubMed|PDF|
- Proteins Regulating Ras and Its
Relatives (1993) |PubMed|PDF|
In 1990, I made the startling
observation that the product of the recently-cloned human gene for
type 1 Neurofibromatosis (NF1) was probably a GTPase-activating
protein (GAP) and therefore that the underlying pathophysiology of
neurofibromatosis involved aberrant regulation of the ras pathway.
This functional prediction was made on the basis of database
searching and sequence alignments that showed NF1 to be
evolutionarily-related (homologous) to two yeast genes, IRA1 and
IRA2. Complementation experiments in ira1- and ira2-
mutants proved that NF1 encoded a functional equivalent of rasGAP in
yeast (Ballester
et al., 1990). This demonstration
of the potential power of computational biology and comparative
(yeast-human) genomics led to my interest in cytoplasmic signal
transduction proteins (including
vav,
rab escort proteins and guanine nucleotide dissociation inhibitors
and
protein prenyltransferases) which I
worked on for a number of years. The domain complexity of many of
these proteins necessitated the development of new algorithms and
software tools for multiple sequence alignment and visualization (Boguski
et al., 1992).
This paper published in 1993,
although labeled by Nature as a review article, was actually a
hybrid publication that contained a great deal of new analyses
(multiple sequence alignments) of numerous and multiform proteins
containing interaction and/or adapter domains which Frank McCormick
and I hypothesized “…may serve to interconnect different regulatory
pathways.” Data and results in this paper served as a framework to
organize and synthesize large amounts of biochemical and genetic
data on ras-mediated signal transduction from experiments in a
variety of organisms. For the first time, we also comprehensively
identified gene and protein sequences by explicit reference to
database accession numbers thereby making it much easier for others
to reproduce and build upon our work.
- A Novel Ring Finger Protein
Interacts with the Cytoplasmic Domain of CD40 (1994) |PubMed|PDF|
- Threading Analysis Suggests That
the Obese Gene Product May Be a Helical Cytokine (1995)
|PubMed
|PDF| Our
results were surprising because, up until that point, no one thought
that fat metabolism would be in any way related to cytokine
signaling pathways. Indeed, our paper was originally rejected
by another journal because the reviewers were incredulous about the
regulatory pathways our structure implied.
- Evolutionary Conservation and
Somatic Mutation Hotspot Maps of p53: Correlation with p53 Protein
Structural and Functional Features (1999) |PubMed|PDF|
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Tom Madej, Steve Bryant and I accurately predicted, by
computational biology alone, the 3-D structure of the protein encoded by
a mouse "obesity" gene (leptin) cloned by Jeff Friedman in 1995.
Our prediction was confirmed by both
NMR and
crystal structures published two years later.
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