-
3
-
-
0029137990
-
BM-3
-
BM-3 heme domain. Energy-minimization studies on the refined crystal structure show that the substrate-access channel undergoes a very large conformational change going from an open conformation to a closed conformation more compatible with substrate binding. The local environment and intermolecular contacts hold the access channel open in the crystal lattice. This explains why soaking crystals in fatty acid substrates leads to either no detectable binding or crystal cracking.
-
(1995)
Acta Crystallogr [D]
, vol.51
, pp. 21-32
-
-
Li1
Poulos2
-
5
-
-
0029586252
-
eryF involved in erythromycin biosynthesis
-
eryF structure also suggests the possible involvement of substrate-assisted acid catalysis in the molecular-oxygen activation step of the P450 catalytic cycle.
-
(1995)
Nature Struct Biol
, vol.2
, pp. 144-153
-
-
Cupp-Vickery1
Poulos2
-
6
-
-
0002783389
-
BM-3, a catalytically self-sufficient monooxygenease induced by barbituates in Bacillus megaterium
-
(1987)
J Biol Chem
, vol.292
, pp. 6883-6890
-
-
Narhi1
Fulco2
-
8
-
-
0026500150
-
Characterization of Saccharapolyspora erythraea cytochrome P450 genes and enzymes, including 6-deoxyerythronolide B hydroxylase
-
(1992)
J Bacteriol
, vol.174
, pp. 725-735
-
-
Andersen1
Hutchinson2
-
11
-
-
0028912205
-
Expression of cytochrome P450 3A5 in E. coli: Effects of 5′ modification, purification, spectral characterization, reconstitution conditions, and catalytic activities
-
of special interest, These two papers [10,11], together with [9], focus on the expression of eukaryotic P450s in recombinant hosts. Of particular importance is the role of the hydrophobic N-terminal leader in partitioning between the membrane and cytosol as well as methods for solubilizing recombinantly expressed P450s.
-
(1995)
Arch Biochem Biophys
, vol.317
, pp. 374-384
-
-
Gillam1
Guo2
Ueng3
Yamazaki4
Cock5
Reilly6
Hooper7
Guengerich8
-
17
-
-
0028773124
-
Laue diffraction study of the structure of cytochrome c peroxidase compound I
-
of special interest, Laue diffraction is an old yet only recently employed technique for vastly increasing the amount of X-ray data that can be obtained from protein crystals by using a broad spectrum of X-ray wavelengths rather than the usual single wavelength. The growing interest in this method reflects an increasing availability of high intensity synchrotron X-ray sources which offer the possibility of obtaining nearly complete sets of X-ray intensity data at moderate-to-high resolution in very short periods of time (i.e. seconds). In this way the structures of important semi-transient enzyme intermediates may be obtained. This paper utilizes the method to obtain the structure of the relatively short-lived compound I intermediate formed upon reaction of the peroxidase with hydrogen peroxide. The Laue structure is basically the same as that obtained by more conventional methods which required six crystals [48].
-
(1994)
Structure
, vol.2
, pp. 201-208
-
-
Fulop1
Phizackerly2
Soltis3
Clifton4
Wakatsuki5
Erman6
Hajdu7
Edwards8
-
19
-
-
0028773636
-
Comparative structural analysis of peroxidase and P450 crystal strutures
-
BM-3 (17% sequence identity). It is shown that the peroxidases exhibit a far more conservative structure than do the P450s. The differences are related to functional differences between the two classes of enzymes.
-
(1994)
Structure
, vol.2
, pp. 461-464
-
-
Li1
Poulos2
-
21
-
-
0028956684
-
BM-3 by molecular dynamics simulations
-
BM-3 heme domain. The crystal form used for the structure determination has two molecules in the asymmetric unit. One molecule exhibits very large fluctuations in the substrate access channel whereas the other does not.
-
(1995)
Proteins
, vol.21
, pp. 237-243
-
-
Paulsen1
Ornstein2
-
22
-
-
0028109245
-
Alterations of the regioselectivity of progesterone metabolism by the mutagenesis of two key amino acid residues in rabbit cytochrome P450 2C3v
-
(1994)
J Biol Chem
, vol.269
, pp. 23937-23943
-
-
Richardson1
Johnson2
-
24
-
-
0028103817
-
Structure—function analysis of CYP2A10 and CYP2A11 cytochromes that differ in only eight amino acids but have strikingly different activities toward testosterone and courmarin
-
(1994)
Biochem Biophys Res Commun
, vol.203
, pp. 373-378
-
-
Ding1
Peng2
Coon3
-
25
-
-
0027457924
-
Engineering of cytochrome P4502B1 Specificity
-
(1993)
J Biol Chem
, vol.268
, pp. 4453-4457
-
-
Halpert1
He2
-
26
-
-
0028968913
-
Altering the regioselectivity of androstenedione hydroxylase activity in P450s 2a-4/5 by a mutation of the residue at position 481
-
of special interest, This paper provides a summary of mutations outside the B′ helix region that alter substrate regiospecificity. In particular the authors discuss mutations that map in the segment between the F/G loop and the ‘loop’ between two β-strands (see Fig. 1).
-
(1995)
Biochemistry
, vol.34
, pp. 5054-5059
-
-
Iwasaki1
Darden2
Pedersen3
Negishi4
-
28
-
-
0029170124
-
cam
-
cam. The stability of the intermediate substrate radical is also shown to be an important factor in controlling regiospecificity [28]. The agreement between predicited substrate hydroxylation profiles and experimental data is quite good.
-
(1995)
Journal of the American Chemical Society
, vol.117
, pp. 2736-2746
-
-
Harris1
Loew2
-
32
-
-
0028527837
-
An evaluation of molecular models of the cytochrome P450 Streptomyces griseolus enzymes P450SU1 and P450SU2
-
of special interest, In addition to predicting a P450 structure, this paper provides a useful analysis of modeling methods. The authors test the variation in the homology-modeled P450 structure as a function of sequence-alignment method and energy-minimization protocols. The authors find that the most unreliably modeled region lies within the B′ helix which is also important for controlling the size, shape and specificity of the substrate-binding pocket.
-
(1994)
J Comput Aided Mol Des
, vol.8
, pp. 607-622
-
-
Braatz1
Bass2
Ornstein3
-
34
-
-
0029033662
-
A three-dimensional model of aromatase cytochrome P450
-
BM-3 as templates. This paper also offers a relatively bold and detailed description of how the androstenedione binds to the hypothetical model, in addition to a proposal for the catalytic mechanism.
-
(1995)
Protein Sci
, vol.4
, pp. 1065-1080
-
-
Graham-Lorence1
Amarneh2
White3
Peterson4
Simpson5
-
35
-
-
0029643786
-
Structure and function of cytochromes P450: a comparative analysis of three crystal structures
-
BM-3. Several important structurally conserved regions are noted and discussed in detail. Sequence alignments based on the crystal structures are especially interesting.
-
(1995)
Structure
, vol.3
, pp. 41-62
-
-
Hasemann1
Kurumbail2
Boddupalli3
Petereson4
Deisenhofer5
-
36
-
-
0028986232
-
cam: a study with unnatural amino acid mutagenesis
-
2 molecule. I have examined the possible consequences of this mutation by molecular modeling; it turns out that one extra methyl group can be readily accommodated with only a modest repositioning of groups in the immediate vicinity of the mutation.
-
(1995)
Biochem Biophys Res Commun
, vol.208
, pp. 96-102
-
-
Kimata1
Shimada2
Hirose3
Ishimura4
-
40
-
-
0028233575
-
Differential roles for Glu318 and Thr319 in cytochrome P450 1A2 catalysis supported by NADPH-cytochrome P450 reductase and tert-butyl hydroperoxide
-
cam numbering scheme) in other eukaryotic P450s. The results are mixed but do show that this threonine is not a critical amino acid in all P450s.
-
(1994)
Arch Biochem Biophys
, vol.310
, pp. 397-401
-
-
Hiroya1
Murakami2
Shimizu3
Hatano4
Ortiz de Montellano5
-
41
-
-
0027994378
-
cam oxygen activation
-
cam mutants. The activity of this mutant is significantly lower than that of the wild-type. In addition, an intriguing build-up of a new spectral intermediate is observed under steady-state conditions suggesting a change in the rate-limiting step. This system could provide an excellent opportunity to trap and study an important catalytic intermediate.
-
(1994)
J Biol Chem
, vol.269
, pp. 4260-4266
-
-
Gerber1
Sligar2
-
46
-
-
0027609916
-
SETOR: hardware lighted three-dimensional solid model representations of macromolecules
-
(1993)
J Mol Graphics
, vol.11
, pp. 134-138
-
-
Evans1
-
47
-
-
0026244229
-
MOLSCRIPT: a program to produce both detailed and schematic plots of protein structures
-
(1991)
J Appl Crystallogr
, vol.24
, pp. 946-950
-
-
Kraulis1
|