Regional mapping of a liver α-subunit gene of phosphorylase kinase (PHKA) to the distal region of human chromosome Xp

1992 ◽  
Vol 60 (3-4) ◽  
pp. 194-196 ◽  
Author(s):  
J.G. Wauters ◽  
P.J. Bossuyt ◽  
J. Davidson ◽  
J. Hendrickx ◽  
M.W. Kilimann ◽  
...  
1990 ◽  
Vol 53 (2-3) ◽  
pp. 91-94 ◽  
Author(s):  
P.J. Barnard ◽  
J.M.J. Derry ◽  
A.S. Ryder-Cook ◽  
N.F. Zander ◽  
M.W. Kilimann

1983 ◽  
Vol 80 (20) ◽  
pp. 6282-6285 ◽  
Author(s):  
J. W. Hardin ◽  
M. E. Riser ◽  
J. M. Trent ◽  
P. O. Kohler

1981 ◽  
Vol 256 (10) ◽  
pp. 5121-5127
Author(s):  
M. Boothby ◽  
R.W. Ruddon ◽  
C. Anderson ◽  
D. McWilliams ◽  
I. Boime

1992 ◽  
Vol 267 (23) ◽  
pp. 16044-16047 ◽  
Author(s):  
C.H. Lee ◽  
D Park ◽  
D Wu ◽  
S.G. Rhee ◽  
M.I. Simon

2009 ◽  
Vol 25 (4) ◽  
pp. 288-288 ◽  
Author(s):  
M D Potts ◽  
V Hanrahan ◽  
D F Hill

1977 ◽  
Vol 162 (2) ◽  
pp. 411-421 ◽  
Author(s):  
S J Yeaman ◽  
P Cohen ◽  
D C Watson ◽  
G H Dixon

The known amino acid sequences at the two sites on phosphorylase kinase that are phosphorylated by cyclic AMP-dependent protein kinase were extended. The sequences of 42 amino acids around the phosphorylation site on the alpha-subunit and of 14 amino acids around the phosphorylation site on the beta-subunit were shown to be: alpha-subunit Phe-Arg-Arg-Leu-Ser(P)-Ile-Ser-Thr-Glu-Ser-Glx-Pro-Asx-Gly-Gly-His-Ser-Leu-Gly-Ala-Asp-Leu-Met-Ser-Pro-Ser-Phe-Leu-Ser-Pro-Gly-Thr-Ser-Val-Phe(Ser,Pro,Gly)His-Thr-Ser-Lys; beta-subunit, Ala-Arg-Thr-Lys-Arg-Ser-Gly-Ser(P)-VALIle-Tyr-Glu-Pro-Leu-Lys. The sites on histone H2B which are phosphorylated by cyclic AMP-dependent protein kinase in vitro were identified as serine-36 and serine-32. The amino acid sequence in this region is: Lys-Lys-Arg-Lys-Arg-Ser32(P)-Arg-Lys-Glu-Ser36(P)-Tyr-Ser-Val-Tyr-Val- [Iwai, K., Ishikawa, K. & Hayashi, H. (1970) Nature (London) 226, 1056-1058]. Serine-36 was phosphorylated at 50% of the rate at which the beta-subunit of phosphorylase kinase was phosphorylated, and it was phosphorylated 6-7-fold more rapidly than was serine-32. The amino acid sequences when compared with those at the phosphorylation sites of other physiological substrates suggest that the presence of two adjacent basic amino acids on the N-terminal side of the susceptible serine residue may be critical for specific substrate recognition in vivo.


2005 ◽  
Vol 22 (4) ◽  
pp. 271-276 ◽  
Author(s):  
Makiko Kawagishi-Kobayashi ◽  
Naoto Yabe ◽  
Mizuho Tsuchiya ◽  
Sachiyo Harada ◽  
Tomoko Kobayashi ◽  
...  

1989 ◽  
Vol 9 (11) ◽  
pp. 5113-5122
Author(s):  
J A Bokar ◽  
R A Keri ◽  
T A Farmerie ◽  
R A Fenstermaker ◽  
B Andersen ◽  
...  

The single-copy gene encoding the alpha subunit of glycoprotein hormones is expressed in the pituitaries of all mammals and in the placentas of only primates and horses. We have systematically analyzed the promoter-regulatory elements of the human and bovine alpha-subunit genes to elucidate the molecular mechanisms underlying their divergent patterns of tissue-specific expression. This analysis entailed the use of transient expression assays in a chorionic gonadotropin-secreting human choriocarcinoma cell line, protein-DNA binding assays, and expression of chimeric forms of human or bovine alpha subunit genes in transgenic mice. From the results, we conclude that placental expression of the human alpha-subunit gene requires a functional cyclic AMP response element (CRE) that is present as a tandem repeat in the promoter-regulatory region. In contrast, the promoter-regulatory region of the bovine alpha-subunit gene, as well as of the rat and mouse genes, was found to contain a single CRE homolog that differed from its human counterpart by a single nucleotide. This difference substantially reduced the binding affinity of the bovine CRE homolog for the nuclear protein that bound to the human alpha CRE and thereby rendered the bovine alpha-subunit promoter inactive in human choriocarcinoma cells. However, conversion of the bovine alpha CRE homolog to an authentic alpha CRE restored activity to the bovine alpha-subunit promoter in choriocarcinoma cells. Similarly, a human but not a bovine alpha transgene was expressed in placenta in transgenic mice. Thus, placenta-specific expression of the human alpha-subunit gene may be the consequence of the recent evolution of a functional CRE. Expression of the human alpha transgene in mouse placenta further suggests that evolution of placenta-specific trans-acting factors preceded the appearance of this element. Finally, in contrast to their divergent patterns of placental expression, both the human and bovine alpha-subunit transgenes were expressed in mouse pituitary, indicating differences in the composition of the enhancers required for pituitary- and placenta-specific expression.


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