A G Stephen
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Explore the profile of A G Stephen including associated specialties, affiliations and a list of published articles.
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10
Citations
210
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Recent Articles
1.
Stephen A, Huynh T, Torres M, Kickhoefer V, Rome L
J Biol Chem
. 2001 May;
276(26):23217-20.
PMID: 11349122
Vaults are the largest (13 megadalton) cytoplasmic ribonucleoprotein particles known to exist in eukaryotic cells. They have a unique barrel-shaped structure with 8-fold symmetry. Although the precise function of vaults...
2.
Siva A, Stephen A, LaFemina M, Scheper R, Kickhoefer V, Rome L
Int J Cancer
. 2001 Apr;
92(2):195-202.
PMID: 11291045
Vaults are ribonucleoprotein complexes comprised of the 100 kDa major vault protein (MVP), the 2 high m.w. vault proteins p193 (VPARP) and p240 (TEP1) and an untranslated small RNA (vRNA)....
3.
Kickhoefer V, Stephen A, Harrington L, ROBINSON M, Rome L
J Biol Chem
. 1999 Nov;
274(46):32712-7.
PMID: 10551828
Vaults are large cytoplasmic ribonucleoprotein complexes of undetermined function. Mammalian vaults have two high molecular mass proteins of 193 and 240 kDa. We have identified a partial cDNA encoding the...
4.
Stephen A, Trausch-Azar J, Ciechanover A, Schwartz A
J Biol Chem
. 1997 Apr;
272(16):10895-903.
PMID: 9099746
The ubiquitin-activating enzyme exists as two isoforms: E1a, localized predominantly in the nucleus, and E1b, localized in the cytoplasm. Previously we generated hemagglutinin (HA) epitope-tagged cDNA constructs, HA1-E1 (epitope tag...
5.
Stephen A, Trausch-Azar J, Ciechanover A, Schwartz A
J Biol Chem
. 1996 Jun;
271(26):15608-14.
PMID: 8663123
The ubiquitin-activating enzyme E1 exists as two isoforms, E1a (117 kDa) and E1b (110 kDa). E1a is phosphorylated, whereas E1b is not. In the present study we have demonstrated the...
6.
Stephen A, Trausch-Azar J, Ciechanover A, Schwartz A
J Biol Chem
. 1994 Dec;
269(52):33171-8.
PMID: 7528747
The ubiquitin-activating enzyme E1 catalyzes the first step in the ubiquitin conjugation pathway. Previously, we have cloned and sequenced the cDNA for human E1. Expression of the E1 cDNA in...
7.
Stephen A, Powls R, Beynon R
Biochem J
. 1993 Apr;
291 ( Pt 2):345-7.
PMID: 8484715
Activity of the cysteine adducts of the cysteine proteinases papain and thaumatopain can be recovered by treatment with thioredoxin, thioredoxin reductase and NADPH. Recovery of proteinase activity did not occur...
8.
Stephen A, Powls R, Beynon R
Biochem Soc Trans
. 1991 Aug;
19(3):297S.
PMID: 1783137
No abstract available.
9.
Cusack M, Stephen A, Powls R, Beynon R
Biochem J
. 1991 Feb;
274 ( Pt 1):231-6.
PMID: 2001238
Aqueous extracts of the aril of the seed of Thaumatococcus daniellii contain, in addition to the intensely sweet protein thaumatin, a cysteine protease that we have termed thaumatopain. Thaumatopain has...
10.
Flannery A, Dalzell G, Stephen A, Beynon R
Biochem Soc Trans
. 1990 Oct;
18(5):1023-4.
PMID: 2083645
No abstract available.