Abstract:
:NADH:ubiquinone oxidoreductase (complex I) is the first and largest complex in the electron transport chain of mitochondria. The bovine complex purified from cardiac muscle consists of at least 42 different subunits with a combined molecular mass of about 890 kDa. The three-dimensional structure of the complex was determined at 22 A from single particles embedded in vitrified ice using electron cryo-microscopy. The structure was calculated using a new program to align particles, to correct for the contrast transfer function of the microscope, and to carry out the three-dimensional reconstruction of the complex. The bovine complex has the overall L-shaped appearance found in earlier studies of the closely related complex I from Neurospora crassa, but it differs by having a thin stalk region linking the membrane-bound globular arm with the intrinsic membrane domain. Thus, the stalk which measures about 30 A in diameter is likely to contain part of the electron transfer pathway linking the NADH binding site in the globular arm with the ubiquinone binding site in the membrane domain. The globular domain of bovine complex I is significantly bigger than that of the N. crassa enzyme, suggesting that the apparent additional subunit complexity of the bovine enzyme is associated with the globular part.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Grigorieff Ndoi
10.1006/jmbi.1998.1668subject
Has Abstractpub_date
1998-04-17 00:00:00pages
1033-46issue
5eissn
0022-2836issn
1089-8638pii
S0022-2836(98)91668-0journal_volume
277pub_type
杂志文章abstract::The yeast a1 and alpha 2 proteins are examples of homeodomain proteins that display cell-type-specific expression. They are co-expressed in only one type of cell, the a/alpha cell, where they repress the expression of a group of target genes. Using purified proteins, we demonstrate that a1 and alpha 2 form a highly sp...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1993.1517
更新日期:1993-10-05 00:00:00
abstract::Historically referred to as "the GTPase center", the L11 binding region (L11BR) of Escherichia coli 23 S rRNA is a highly conserved structure that has been implicated in several essential functions during protein synthesis. Here, in vivo expression of an RNA fragment containing that structure was found to affect trans...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/S0022-2836(02)00304-2
更新日期:2002-05-31 00:00:00
abstract::Proteins are complex structures whose overall stability critically depends on a delicate balance of numerous interactions of similar strength, which are markedly influenced by their environment. Here, we present an analysis of the effect of pH on a protein structure in the crystalline state using RNase A as a model sy...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1999.3093
更新日期:1999-10-01 00:00:00
abstract::Biogenesis of β-barrel membrane proteins is a complex, multistep, and as yet incompletely characterized process. The bacterial porin family is perhaps the best-studied protein family among β-barrel membrane proteins that allows diffusion of small solutes across the bacterial outer membrane. In this study, we have iden...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2012.02.043
更新日期:2012-05-25 00:00:00
abstract::Upon superinfection of immune (lysogenic) cells with bacteriophage Mu, a form of Mu DNA accumulates that sediments about twice as fast as the linear phage DNA marker in neutral sucrose gradients. This form is also detected upon infection of sensitive cells with Mu. We have purified it and examined its physical nature....
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(83)80343-x
更新日期:1983-06-25 00:00:00
abstract::Methods for the prediction of protein function from structure are of growing importance in the age of structural genomics. Here, we focus on the problem of identifying sites of potential serine protease inhibitor interactions on the surface of proteins of known structure. Given that there is no sequence conservation w...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1999.3389
更新日期:2000-02-18 00:00:00
abstract::Tat (trans-activator) proteins are early RNA binding proteins regulating lentiviral transcription. These proteins are necessary components in the life cycle of all known lentiviruses, such as the human immunodeficiency viruses (HIV) or the equine infectious anemia virus (EIAV). Tat proteins are thus ideal targets for ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1995.0158
更新日期:1995-04-07 00:00:00
abstract::The actin cytoskeleton is a complex network controlled by a vast array of intricately regulated actin-binding proteins. Human plastins (PLS1, PLS2, and PLS3) are evolutionary conserved proteins that non-covalently crosslink actin filaments into tight bundles. Through stabilization of such bundles, plastins contribute,...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2017.06.021
更新日期:2017-08-04 00:00:00
abstract::The three possible disulfide bonded isomers of alpha-conotoxin GI have been selectively synthesised and their structures determined by 1H NMR spectroscopy. alpha-Conotoxin GI derives from the venom of Conus geographus and is a useful neuropharmacological tool as it selectively binds to the nicotinic acetylcholine rece...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1701
更新日期:1998-05-01 00:00:00
abstract::Detachment of flagella in Chlamydomonas reinhardii stimulates a rapid accumulation of tubulin mRNAs. The induced tubulin mRNAs are normally rapidly degraded following flagellar regeneration, but inhibition of protein synthesis with cycloheximide prevents their degradation. alpha-Tubulin poly(A) tail lengths were measu...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(89)90243-x
更新日期:1989-06-20 00:00:00
abstract::FIS, the factor for inversion stimulation, from Escherichia coli and other enteric bacteria, is an interwined alpha-helical homodimer. Size exclusion chromatography and static light scattering measurements demonstrated that FIS is predominately a stable dimer at the concentrations (1-10 microM monomer) and buffer cond...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2003.11.013
更新日期:2004-01-23 00:00:00
abstract::We describe experiments that enable us to track the presence and direction of the DNA bend induced by Escherichia coli catabolite activator protein (CAP) through the intermediate stages of transcription initiation at the lac promoter. Transcriptional complexes examined were formed on superhelical templates to enhance ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(91)90562-k
更新日期:1991-05-20 00:00:00
abstract::ThiI is an enzyme responsible for the formation of the modified base S(4)U (4-thiouridine) found at position 8 in some prokaryotic tRNAs. This base acts as a sensitive trigger for the response mechanism to UV exposure, providing protection against its damaging effects. We present the crystal structure of Bacillus anth...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2005.11.013
更新日期:2006-02-10 00:00:00
abstract::A combination of experimental structural data, homology modelling and elastic network normal mode analysis is used to explore how coupled motions between the two myosin heads and the dimerization domain (S2) in smooth muscle myosin II determine the domain movements required to achieve the inhibited state of this ATP-d...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.10.084
更新日期:2005-01-28 00:00:00
abstract::The recombination-activating protein, RAG1, a key component of the V(D)J recombinase, binds multiple Zn(2+) ions in its catalytically required core region. However, the role of zinc in the DNA cleavage activity of RAG1 is not well resolved. To address this issue, we determined the stoichiometry of Zn(2+) ions bound to...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.05.076
更新日期:2009-07-31 00:00:00
abstract::NHP6A is a non-sequence-specific DNA-binding protein from Saccharomyces cerevisiae which belongs to the HMGB protein family. Previously, we have solved the structure of NHP6A in the absence of DNA and modeled its interaction with DNA. Here, we present the refined solution structures of the NHP6A-DNA complex as well as...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(02)00938-5
更新日期:2002-10-18 00:00:00
abstract::Characterization of the RNase P RNA gene derived from Borrelia burgdorferi reveals covariation of the conserved nucleotides at positions corresponding to nucleotides 128 and 230 in Escherichia coli RNase P RNA (M1 RNA). Single base substitutions at either of these positions in M1 RNA resulted in a lack of complementat...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1994.1467
更新日期:1994-08-05 00:00:00
abstract::Kinetic analysis of a mutant version of Escherichia coli aspartate transcarbamoylase in which Thr82 in the regulatory chain (Thr82r) was replaced by Ala results in a shift in the T <==> R equilibrium towards the T-state. In order to understand the structural determinants of this T-state stabilization, the X-ray struct...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1923
更新日期:1998-08-07 00:00:00
abstract::Autophagosomes are double membrane organelles that are formed during a process referred to as macroautophagy. They serve to deliver cytoplasmic material into the lysosome for degradation. Autophagosomes are formed in a de novo manner and are the result of substantial membrane remodeling processes involving numerous pr...
journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
doi:10.1016/j.jmb.2016.10.029
更新日期:2016-10-27 00:00:00
abstract::The purpose of the current study was to alter the broad native tropism of human adenovirus for virus targeting to c-erbB2-positive cancer cells. First, we engineered a single-chain antibody (scFv) against the c-erbB2 oncoprotein into minor capsid protein IX (pIX) of adenovirus serotype 5 (Ad5) in a manner commensurate...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.03.016
更新日期:2009-05-08 00:00:00
abstract::The helical coiled-coil region of the myosin rod in the nematode Caenorhabditis elegans is a repetitive sequence 1094 amino acids long which contains 39 repeats of a 28-residue pattern. The repeats are extremely significant when compared with the statistical distributions expected, first for random sequences, and then...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(83)80173-9
更新日期:1983-09-05 00:00:00
abstract::The hepatitis delta virus (HDV) ribozyme is a self-cleaving RNA that resides in the HDV genome and regulates its replication. The native fold of the ribozyme is complex, having two pseudoknots. Earlier work implicated four non-native pairings in slowing pseudoknot formation: Alt 1, Alt 2, Alt 3, and Alt P1. The goal o...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.05.071
更新日期:2004-08-13 00:00:00
abstract::We reported recently that activation of the inositol 1,4,5-triphosphate receptor (IP3R) is required for efficient HIV-1 Gag trafficking and viral particle release. IP3R activation requires phospholipase C (PLC)-catalyzed hydrolysis of PI(4,5)P(2) to IP3 and diacylglycerol. We show that Sprouty2 (Spry2), which binds PI...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2011.04.069
更新日期:2011-07-22 00:00:00
abstract::We identified the predominant 5' ends of an mRNA in Escherichia coli to the exact nucleotides. There are four such ends of lac mRNA in fully induced cells. About 70% of the molecules have the reported major in vitro end, A-A-U-U-G (at +1), which is located 38 nucleotides before the A-U-G translation start. Another 15%...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(85)90342-0
更新日期:1985-03-20 00:00:00
abstract::The high-resolution structure of the N-terminal domain (NTD) of the retroviral capsid protein (CA) of Mason-Pfizer monkey virus (M-PMV), a member of the betaretrovirus family, has been determined by NMR. The M-PMV NTD CA structure is similar to the other retroviral capsid structures and is characterized by a six alpha...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.06.029
更新日期:2009-09-11 00:00:00
abstract::Microbial organisms utilize light not only as energy sources but also as signals by which rhodopsins (containing retinal as a chromophore) work as photoreceptors. Sensory rhodopsin I (SRI) is a dual photoreceptor that regulates both negative and positive phototaxis in microbial organisms, such as the archaeon Halobact...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.06.050
更新日期:2009-09-11 00:00:00
abstract::We demonstrate that RecA protein-coated, short single-stranded DNA probes paired with a specific homologous DNA sequence in a linear duplex target molecule and accurately targeted the selected DNA sequence. RecA protein-coated complementary ssDNA probes were reacted with linear duplexes, and the homologously paired mo...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1993.1431
更新日期:1993-08-05 00:00:00
abstract::The structure of cardiotoxin CTX I from Naja naja atra has been investigated by NMR spectroscopy. Sequence specific resonance assignments have been obtained for all backbone protons as well as for most side-chain protons. Distance geometry calculations were carried out using a metric matrix DG program. A total of 715 ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1994.1460
更新日期:1994-07-29 00:00:00
abstract::Catalase-1, one of four catalase activities of Neurospora crassa, is associated with non-growing cells and accumulates in asexual spores. It is a large, tetrameric, highly efficient, and durable enzyme that is active even at molar concentrations of hydrogen peroxide. Catalase-1 is oxidized at the heme by singlet oxyge...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.07.027
更新日期:2004-09-17 00:00:00
abstract::Three homology models of the human ghrelin receptor (GHS-R1a) have been generated from the available X-ray structures of rhodopsin (RHO model), opsin (OPS model) and beta-2 adrenergic receptor (B2 model). The latter was used as a starting point for combined molecular dynamics simulation (MDS) and full atom normal mode...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.09.051
更新日期:2010-01-29 00:00:00