The N-terminal region of the heme-regulated eIF2alpha kinase is an autonomous heme binding domain.
The N-terminal region of the heme-regulated eIF2alpha kinase is an autonomous heme binding domain.
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血红素调节的 eIF2α 激酶的 N 端区域是一个自主血红素结合域。
DOI:
10.1046/j.1432-1327.2000.01021.x
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Chen,JJ
中科院分区:
文献类型:
--
作者:
Uma,S;Matts,RL;Guo,Y;White,S;Chen,JJ
The N‐terminal domain (NTD) of the heme‐regulated eukaryotic initiation factor (eIF)2α kinase (HRI) was aligned to sequences in the NCBI data base usingentrezand apam250 matrix. Significant similarity was found between amino acids 11–118 in the NTD of rabbit HRI and amino acids 16–120 in mammalian α‐globins. Several conserved amino acid residues present in globins are conserved in the NTD of HRI. His83 of HRI was predicted to be equivalent to the proximal heme ligand (HisF8) that is conserved in all globins. Molecular modeling of the NTD indicated that its amino acid sequence was compatible with the globin fold. Recombinant NTD (residues 1–159) was expressed inEscherichia coli. Spectral analysis of affinity purified recombinant NTD indicated that the NTD contained stably bound hemin. Mutational analysis indicated that His83 played a critical structural role in the stable binding of heme to the NTD, and was required to stabilize full length HRI synthesizedde novoin the rabbit reticulocyte lysate. These results indicate that the NTD of HRI is an autonomous heme‐binding domain, with His83 possibly serving as the proximal heme binding ligand.
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影响因子:
15
作者:
M. Sundaramoorthy;K. Choudhury;S. Edwards;T. Poulos
通讯作者:
T. Poulos
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Gross,M;Olin,A;Hessefort,S;Bender,S
通讯作者:
Bender,S
影响因子:
4.8
作者:
A. Komar;A. Kommer;I. Krasheninnikov;A. Spirin
通讯作者:
A. Spirin
DOI:
10.1073/pnas.88.17.7729
发表时间:
1991-09-01
影响因子:
11.1
作者:
CHEN, JJ;THROOP, MS;LONDON, IM
通讯作者:
LONDON, IM
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hurst,R;Schatz,JR;Matts,RL
通讯作者:
Matts,RL