Structural and functional analysis of the cAMP binding domain from the regulatory subunit of Mucor rouxii protein kinase A

The cAMP binding domain of the regulatory subunit (R) of Mucor rouxii protein kinase A was cloned. The deduced amino acid sequence was highly homologous in sequence and in size to the corresponding region in fungal and higher eukaryotic regulatory subunits (47-54%), but particularly homologous (62%)...

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Autor principal: Sorol, M.R
Otros Autores: Pastori, R.L, Muro, A., Moreno, S., Rossi, S.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Academic Press Inc. 2000
Acceso en línea:Registro en Scopus
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024 7 |2 scopus  |a 2-s2.0-0034667984 
024 7 |2 Molecular Sequence Numbers  |a GENBANK: AF240461; DDBJ: AF240461; 
024 7 |2 cas  |a amino acid, 65072-01-7; arginine, 1119-34-2, 15595-35-4, 7004-12-8, 74-79-3; cyclic AMP, 60-92-4; cyclic AMP dependent protein kinase; leucine, 61-90-5, 7005-03-0; lysine, 56-87-1, 6899-06-5, 70-54-2 
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030 |a ABBIA 
100 1 |a Sorol, M.R. 
245 1 0 |a Structural and functional analysis of the cAMP binding domain from the regulatory subunit of Mucor rouxii protein kinase A 
260 |b Academic Press Inc.  |c 2000 
270 1 0 |m Rossi, S.; Departamento de Quimica Biologica, Fac. de Ciencias Exact. y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: srossi@qb.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a The cAMP binding domain of the regulatory subunit (R) of Mucor rouxii protein kinase A was cloned. The deduced amino acid sequence was highly homologous in sequence and in size to the corresponding region in fungal and higher eukaryotic regulatory subunits (47-54%), but particularly homologous (62%) to Blastocladiella emersonii, a fungus classified in a different phylum. Amino acids reported to be important for interaction with cAMP, for cooperativity between the two cAMP binding domains, in the general folding of the domain, and for interaction with the catalytic subunit were conserved in all the fungal sequences. Based on either sequence or functional behavior, the M. rouxii R subunit cannot be classified as being more similar to RI or RII of mammalian systems. The M. rouxii protein sequence was modeled using as template the coordinates of the crystallized bovine regulatory subunit type I(α). The quality of the model is good. The two backbones could be perfectly overlapped, except for two loop regions of high divergence. The α helix C of domain A, proposed to have a strong interaction with the catalytic subunit, contains a leucine replacing a basic residue (arginine or lysine) commonly found in RI or RII. The domains A and B of the M. rouxii regulatory subunit were overexpressed as fusion proteins with GST. GST domain B protein was inactive. GST domain A was active; the kinetic parameters of affinity toward cAMP analogs, site selectivity, and dissociation kinetics of bound cAMP were analogous to the properties of the domain in the whole regulatory subunit. (C) 2000 Academic Press.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: 1This work was supported by grants from the University of Buenos Aires, Agencia Nacional de Promoción Científ ica y Técnológica and Consejo Nacional de Investigaciones Científicas y Técnicas. M.R.S. had a doctoral fellowship and S.R. a postdoctoral short fellowship from FOMEC. 
593 |a Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428, Buenos Aires, Argentina 
593 |a Diabetes Research Institute, University of Miami, Miami, FL 33021, United States 
593 |a International Center for Genetic Engineering and Biotechnology, Trieste, I-34012, Italy 
690 1 0 |a CAMP BINDING 
690 1 0 |a MUCOR ROUXII 
690 1 0 |a PROTEIN SEQUENCE 
690 1 0 |a AMINO ACID 
690 1 0 |a ARGININE 
690 1 0 |a CYCLIC AMP 
690 1 0 |a CYCLIC AMP DEPENDENT PROTEIN KINASE 
690 1 0 |a CYCLIC AMP DERIVATIVE 
690 1 0 |a HYBRID PROTEIN 
690 1 0 |a LEUCINE 
690 1 0 |a LYSINE 
690 1 0 |a AMINO ACID SEQUENCE 
690 1 0 |a ARTICLE 
690 1 0 |a BINDING AFFINITY 
690 1 0 |a CHEMICAL STRUCTURE 
690 1 0 |a DISSOCIATION 
690 1 0 |a ENZYME ACTIVE SITE 
690 1 0 |a MOLECULAR MODEL 
690 1 0 |a MUCOR 
690 1 0 |a NONHUMAN 
690 1 0 |a NUCLEOTIDE SEQUENCE 
690 1 0 |a POLYMERASE CHAIN REACTION 
690 1 0 |a PRIORITY JOURNAL 
690 1 0 |a SEQUENCE HOMOLOGY 
690 1 0 |a AMYLOMYCES ROUXII 
690 1 0 |a BLASTOCLADIELLA EMERSONII 
690 1 0 |a BLASTOCLADIELLA EMERSONII 
690 1 0 |a BOVINAE 
690 1 0 |a EUKARYOTA 
690 1 0 |a FUNGI 
690 1 0 |a MAMMALIA 
690 1 0 |a MUCOR 
690 1 0 |a MUCOR ROUXII 
700 1 |a Pastori, R.L. 
700 1 |a Muro, A. 
700 1 |a Moreno, S. 
700 1 |a Rossi, S. 
773 0 |d Academic Press Inc., 2000  |g v. 382  |h pp. 173-181  |k n. 2  |p Arch. Biochem. Biophys.  |x 00039861  |w (AR-BaUEN)CENRE-1377  |t Archives of Biochemistry and Biophysics 
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