An evolutionarily conserved tripartite tryptophan motif stabilizes the prodomains of cathepsin L-like cysteine proteases.
An evolutionarily conserved tripartite tryptophan motif stabilizes the prodomains of cathepsin L-like cysteine proteases.
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进化上保守的三联色氨酸基序可稳定组织蛋白酶 L 样半胱氨酸蛋白酶的前结构域。
DOI:
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
B. Wiederanders
中科院分区:
文献类型:
--
作者:
S. Kreusch;M. Fehn;G. Maubach;K. Nissler;W. Rommerskirch;K. Schilling;E. Weber;I. Wenz;B. Wiederanders
Cathepsin L-like cysteine proteinases contain an evolutionarily highly conserved alpha-helical motif in the proregion. This is called the ER(F/W)N(I/V)N motif according to the conserved amino acids along one side of the helix. We studied the function of this motif using site-directed mutagenesis experiments of human procathepsin S. We replaced each of these amino acids with alanine and constructed deletion mutants lacking parts of the helix. All mutants were expressed in HEK 293 cells, but only one, W52A, was not processed to mature cathepsin S, nor was it phosphorylated or secreted into the culture medium. W52 is part of the hydrophobic core in the propeptide region of cathepsin S comprising two additional tryptophan residues, W28 and W31, also conserved among cathepsin L-like cysteine peptidases. Replacement of the latter with alanine led to consequences similar to those with the W52A mutation. Recombinant propeptides containing mutations of one of the three tryptophan residues were three orders of magnitude less effective as inhibitors of mature cathepsin S than the wild-type propeptide. The results point to a dominant role of the respective hydrophobic stack in the proper folding, transport and maturation of procathepsin S and related cathepsin L-like cysteine proteinases.
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影响因子:
3.9
作者:
K. Tao;N. A. Stearns;J. Dong;Q. L. Wu;G. Sahagian
通讯作者:
K. Tao;N. A. Stearns;J. Dong;Q. L. Wu;G. Sahagian
DOI:
10.1073/pnas.90.7.3063
发表时间:
1993-04-01
影响因子:
11.1
作者:
KARRER, KM;PEIFFER, SL;DITOMAS, ME
通讯作者:
DITOMAS, ME
DOI:
10.1073/pnas.92.9.3849
发表时间:
1995-04-25
影响因子:
11.1
作者:
REDDY, VY;ZHANG, QY;WEISS, SJ
通讯作者:
WEISS, SJ
DOI:
--
发表时间:
1986
期刊:
Biochemical Society symposium
影响因子:
--
作者:
Chen,JW;Chen,GL;D'Souza,MP;Murphy,TL;August,JT
通讯作者:
August,JT
影响因子:
4.1
作者:
MUNGER, JS;HAASS, C;CHAPMAN, HA
通讯作者:
CHAPMAN, HA