Journal ArticleDOI
GTPase inhibiting mutations activate the α chain of G s and stimulate adenylyl cyclase in human pituitary tumours
Reads0
Chats0
TLDR
A subset of growth hormone-secreting human pituitary tumours carries somatic mutations that inhibit GTPase activity of a G protein α chain, αs, which results in the activation of adenylyl cyclase, which bypasses the cells' normal requirement for trophic hormone.Abstract:
A subset of growth hormone-secreting human pituitary tumours carries somatic mutations that inhibit GTPase activity of a G protein alpha chain, alpha(s) The resulting activation of adenylyl cyclase bypasses the cells' normal requirement for trophic hormone Amino acids substituted in the putative gsp oncogene identify a domain of G protein alpha-chains required for intrinsic ability to hydrolyse GTP This domain may serve as a built-in counter-part of the separate GTPase-activating proteins required for GTP hydrolysis by small GTP-binding proteins such as p21rasread more
Citations
More filters
Journal ArticleDOI
The GTPase superfamily: conserved structure and molecular mechanism
TL;DR: GTPases are conserved molecular switches, built according to a common structural design, and rapidly accruing knowledge of individual GTPases—crystal structures, biochemical properties, or results of molecular genetic experiments—support and generate hypotheses relating structure to function in other members of the diverse family of GTPase.
PatentDOI
Consensus coding sequences of human breast and colorectal cancers
Tobias Sjöblom,Sian Jones,D. Williams Parsons,Laura D. Wood,Jimmy Lin,Thomas D. Barber,Diana Mandelker,Bert Vogelstein,Kenneth W. Kinzler,Victor E. Velculesu +9 more
TL;DR: In this paper, the authors analyzed 13,023 genes in 11 breast and 11 colorectal cancers and found that individual tumors accumulate an average of 90 mutant genes but only a subset of these contribute to the neoplastic process.
Journal ArticleDOI
Oncogenes and signal transduction
Lewis C. Cantley,Kurt R. Auger,Christopher L. Carpenter,Brian C. Duckworth,Andrea Graziani,Rosana Kapeller,Stephen P. Soltoff +6 more
TL;DR: The protein-tyrosine kinase oncogenes will be the primary focus of the review as discussed by the authors, however, biochemical connections between the protein tyrosine Kinases and oncoproteins of the Ras,Raf,Fos,Jun, and Rel families as well as the protein kinase C family are also discussed.
Journal ArticleDOI
Identification of FAP locus genes from chromosome 5q21
Kenneth W. Kinzler,Mef Nilbert,Li Kuo Su,Bert Vogelstein,Tracy M. Bryan,Daniel B. Levy,Kelly J. Smith,Antonette C. Preisinger,Hedge Philip John,Douglas McKechnie,Rachel Finniear,Alex Markham,John Groffen,Mark S. Boguski,Stephen F. Altschul,Akira Horii,Hiroshi Ando,Yasuo Miyoshi,Yoshio Miki,Isamu Nishisho,Yusuke Nakamura +20 more
TL;DR: The APC gene was identified in a contig initiated from the MCC gene and was found to encode an unusually large protein, and these two closely spaced genes encode proteins predicted to contain coiled-coil regions, which were also expressed in a wide variety of tissues.
Journal ArticleDOI
The GTPase superfamily: a conserved switch for diverse cell functions
TL;DR: A molecular switch is a molecular switch whose "on" and "off" states are triggered by binding and hydrolysis of GTP as discussed by the authors. But the mechanism in myriad versions of the switch can be traced back to a single primordial protein.
References
More filters
Journal ArticleDOI
Single-step method of RNA isolation by acid guanidinium thiocyanate-phenol-chloroform extraction
TL;DR: A new method of total RNA isolation by a single extraction with an acid guanidinium thiocyanate-phenol-chloroform mixture is described, providing a pure preparation of undegraded RNA in high yield and can be completed within 4 h.
Journal ArticleDOI
Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase
Randall Keichi Saiki,David H. Gelfand,Susanne Stoffel,Stephen J. Scharf,Russell Higuchi,Glenn Thomas Horn,Kary B. Mullis,Henry A. Erlich +7 more
TL;DR: A thermostable DNA polymerase was used in an in vitro DNA amplification procedure, the polymerase chain reaction, which significantly improves the specificity, yield, sensitivity, and length of products that can be amplified.
Journal ArticleDOI
Rapid and efficient site-specific mutagenesis without phenotypic selection.
TL;DR: The high efficiency, approximately equal to 10-fold greater than that observed using current methods without enrichment procedures, is obtained by using a DNA template containing several uracil residues in place of thymine, which is applied to mutations introduced via both oligonucleotides and error-prone polymerization.
Journal ArticleDOI
G proteins: transducers of receptor-generated signals
TL;DR: This paper presents a meta-analysis of G Protein Interactions and its Foundations, which states that G Proteins are Law-Regulated and G Protein-Effector Interactions are Nonvolatile.
Journal ArticleDOI
Generation of single-stranded DNA by the polymerase chain reaction and its application to direct sequencing of the HLA-DQA locus
TL;DR: This work has studied the allelic diversity at the HLA-DQA locus and its association with the serologically defined Hla-DR and -DQ types and revealed eight alleles and three additional haplotypes.