Abstract:
:Membrane crystals of mitochondrial ubiquinol: cytochrome c reductase of improved size and long-range order and of the cytochrome bc1 subcomplex have been obtained by a dialysis method. The enzyme--Triton X-100 complex was mixed with Triton phospholipid micelles and the Triton slowly removed by dialysis for 48 hours at pH 5.5 at room temperature or above. The effect of varying the pH and temperature on the shape, size and order of the crystals is described.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Hovmöller S,Slaughter M,Berriman J,Karlsson B,Weiss H,Leonard Kdoi
10.1016/s0022-2836(83)80264-2subject
Has Abstractpub_date
1983-04-05 00:00:00pages
401-6issue
2eissn
0022-2836issn
1089-8638pii
S0022-2836(83)80264-2journal_volume
165pub_type
杂志文章abstract::Selenoproteins are present in all three domains of life and are responsible for a major part of a cell's antioxidant defense against reactive oxygen species. Synthesis of selenoproteins requires the decoding of a UGA codon as selenocysteine (Sec) instead of translation termination. Sec is incorporated into the growing...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2013.04.016
更新日期:2013-07-24 00:00:00
abstract::Site-directed mutagenesis has been used to change individual amino acids of the larvicidal 27,000 Mr delta-endotoxin of Bacillus thuringiensis var. israelensis. Basic and acidic residues have been systematically replaced by alanine, and the resulting mutant polypeptides analysed for cytolytic and larvicidal activity, ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(88)90283-5
更新日期:1988-08-05 00:00:00
abstract::2a2 is the most commonly rearranged gene in the human V(lambda )locus. It has been postulated that certain immunoglobulin genes (including 2a2) are rearranged preferentially because their germline sequences encode structures capable of binding to a range of antigens. Somatic mutation could then increase the specificit...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2000.4491
更新日期:2001-03-16 00:00:00
abstract::During vacuum condensation of metals on frozen proteins, nanoclusters are preferentially formed at specific surface sites (decoration). Understanding the nature of metal/protein interaction is of interest for structure analysis and is also important in the fields of biocompatibility and sensor development. Studies on ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(02)00622-8
更新日期:2002-08-09 00:00:00
abstract::The metazoan cell membrane is highly organized. Maintaining such organization and preserving membrane integrity under different conditions are accomplished through intracellular tethering to an extensive, flexible protein network. Spectrin, the principal component of this network, is attached to the membrane through t...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2012.01.041
更新日期:2012-04-06 00:00:00
abstract::Guanine-uracil (G.U) wobble base-pairs are a detrimental lesion in DNA. Previous investigations have shown that such wobble base-pairs are more prone to base-opening than the normal G.C base-pairs. To investigate the sequence-dependence of base-pair opening we have performed 5ns molecular dynamics simulations on G.U w...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(03)00598-9
更新日期:2003-07-18 00:00:00
abstract::The ATPase activity of the DNA packaging protein gp16 (gene product 16) of bacteriophage phi 29 was studied in the completely defined in-vitro assembly system. ATP was hydrolyzed to ADP and Pi in the packaging reaction that included purified proheads, DNA-gp3 and gp16. Approximately one molecule of ATP was used in the...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(87)90121-5
更新日期:1987-09-20 00:00:00
abstract::Ground-state dynamics in RNA is a critical precursor for structural adaptation observed ubiquitously in protein-RNA recognition. A tertiary conformational analysis of the stem-loop structural element in the transactivation response element (TAR) from human immunodeficiency virus type 1 (HIV-I) RNA is presented using r...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2001.5235
更新日期:2002-01-11 00:00:00
abstract::Several experimental data support the notion that the recognition of DNA crossovers play an important role in the multiple functions of topoisomerase II. Here, a theoretical analysis of the possible modes of assembly of yeast topoisomerase II with right and left-handed tight DNA crossovers is performed, using the crys...
journal_title:Journal of molecular biology
pub_type: 杂志文章,meta分析
doi:10.1006/jmbi.1998.2281
更新日期:1998-12-18 00:00:00
abstract::The A-isozyme of O-acetylserine sulfhydrylase, a pyridoxal phosphate-dependent enzyme isolated from Salmonella typhimurium catalyzes the synthesis of L-cysteine from O-acetyl-L-serine and sulfide. The pyridoxal form of the enzyme has been crystallized in two different forms. One form is in the orthorhombic space group...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1993.1358
更新日期:1993-06-20 00:00:00
abstract::The aggregation of proteins often results in highly ordered fibrillar structures. While significant insights have been obtained on structural aspects of amyloid fibrils, little is known about the structures of protofibrils, which are presumed to be the precursors of fibrils. An understanding of the molecular mechanism...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.08.053
更新日期:2009-10-30 00:00:00
abstract::The structure of a metastable folding intermediate of human insulin-like growth factor I (IGF-I) and an engineered model are investigated by circular dichroism and two-dimensional 1H NMR spectroscopy. The intermediate, which contains two of three native disulfide bonds, was trapped by acid quenching and isolated by re...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0320
更新日期:1996-06-07 00:00:00
abstract::Under usual laboratory conditions, lysis by bacteriophage lambda requires only the holin and endolysin genes, but not the Rz and Rz1 genes, of the lysis cassette. Defects in Rz or Rz1 block lysis only in the presence of high concentrations of divalent cations. The lambda Rz and Rz1 lysis genes are remarkable in that R...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2007.08.045
更新日期:2007-11-09 00:00:00
abstract::The secondary structure of bacterial RNase P RNA, a ribozyme responsible for the maturation of the 5' end of tRNAs, is well established on the basis of sequence comparison analysis. RNase P RNA secondary structures fall into two types, A and B, which share a common core formed by the assembly of two main folding domai...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1797
更新日期:1998-06-19 00:00:00
abstract::Determining the relationship between protein folding pathways on and off the ribosome remains an important area of investigation in biology. Studies on isolated domains have shown that alteration of the separation of residues in a polypeptide chain, while maintaining their spatial contacts, may affect protein stabilit...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2018.10.011
更新日期:2018-12-07 00:00:00
abstract::F4 fimbriae encoded by the fae operon are the major colonization factors associated with porcine neonatal and postweaning diarrhoea caused by enterotoxigenic Escherichia coli (ETEC). Via the chaperone/usher pathway, the F4 fimbriae are assembled as long polymers of the major subunit FaeG, which also possesses the adhe...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2007.02.051
更新日期:2007-05-04 00:00:00
abstract::The protein product (c-Myc) of the protooncogene c-myc is a transcriptional regulator playing a key role in cellular growth, differentiation, and apoptosis. Deregulated myc genes, like the transduced retroviral v-myc allele, are oncogenic and cause cell transformation. The C-terminal bHLHZip domain of v-Myc, encompass...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2001.4537
更新日期:2001-04-13 00:00:00
abstract::Escherichia coli DsbA belongs to the thioredoxin family and catalyzes the formation of disulfide bonds during the folding of proteins in the bacterial periplasm. It active site (C30-P31-H32-C33) consists of a disulfide bridge that is transferred to newly translocated proteins. The work reported here refers to the DsbA...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2005.01.049
更新日期:2005-04-01 00:00:00
abstract::In order to develop a system which allows infection by an epitope-specific phage-antibody via an F-pilus expressing that epitope, a study on the expression of foreign sequences on F-pilin was undertaken. Initially, a plasmid library was constructed with random sequences encoding one to five amino acid residues fused t...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1773
更新日期:1998-06-12 00:00:00
abstract::By examining F1 progeny of mutagenized Caenorhabditis elegans larvae, we recovered several dominant mutations which affect muscle structure. Five of these new mutations resulted in phenotypes unlike the previously recognized unc-54 and unc-15 dominant alleles. Mapping studies placed all five mutations in the same smal...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(84)90023-8
更新日期:1984-12-15 00:00:00
abstract::FtsH (HflB) is an ATP-dependent protease found in prokaryotic cells, mitochondria and chloroplasts. Here, we have identified, in the carboxy-terminal region of FtsH (HfIB), a short alpha helix predicted of forming a coiled-coil, leucine zipper, structure. This region appears to be structurally conserved. The presence ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2000.3767
更新日期:2000-06-16 00:00:00
abstract::In humans, NKG2D is an activating receptor on natural killer (NK) cells and a costimulatory receptor on certain T cells and plays a central role in mediating immune responses in autoimmune diseases, infectious diseases, and cancer. Monoclonal antibodies that antagonize or agonize immune responses mediated by human NKG...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2008.09.008
更新日期:2008-12-31 00:00:00
abstract::Ribosomal subunit joining is a key checkpoint in the bacterial translation initiation pathway during which initiation factors (IFs) regulate association of the 30S initiation complex (IC) with the 50S subunit to control formation of a 70S IC that can enter into the elongation stage of protein synthesis. The GTP-bound ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2014.09.024
更新日期:2015-05-08 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::Solid-state 2H nuclear magnetic resonance line shapes have been obtained from folded films of oriented Li-DNA molecules with the purine bases selectively labeled with deuterium at the 8-position. From line shape simulations, the static base tilts as well as the anisotropic motional amplitudes were determined as a func...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(88)90461-5
更新日期:1988-07-20 00:00:00
abstract::Six R sequences have been described as members of a new family of dispersed repetitive DNA in the mouse genome (Gebhard et al., 1982). Several sequenced regions were extended in the 5' direction (R1, R2 and R6) and two new sequences were determined (R7 and R8). On the basis of our sequence and blot hybridization data ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(83)80147-8
更新日期:1983-10-25 00:00:00
abstract::The telomeric d(GGGGTT).d(AACCCC) repeat tracts (G4T2 repeats) in Tetrahymena thermophila macronuclei were shown previously to be packaged in a non-nucleosomal DNA-protein complex. Here, we demonstrate that these telomeric repeats, together with a short region of the immediately adjacent non-telomeric sequence, exist ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1867
更新日期:1998-07-17 00:00:00
abstract::The structure of Mycobacterium tuberculosis dUTP nucleotidohydrolase (dUTPase) has been determined at 1.3 Angstrom resolution in complex with magnesium ion and the non-hydrolyzable substrate analog, alpha,beta-imido dUTP. dUTPase is an enzyme essential for depleting potentially toxic concentrations of dUTP in the cell...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.06.028
更新日期:2004-08-06 00:00:00
abstract::Single sodium-driven rotors from a bacterial ATP synthase were embedded into a lipid membrane and observed in buffer solution at subnanometer resolution using atomic force microscopy (AFM). Time-lapse AFM topographs show the movement of single proteins within the membrane. Subsequent analysis of their individual traje...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(03)00206-7
更新日期:2003-04-11 00:00:00
abstract::A series of antipicornaviral agents containing piperazinyl moieties was synthesized with the objective of obtaining a compound with a broad spectrum of antirhinovirus activity, high potency (< or = 0.003 microgram/ml), and low cytotoxicity (> or = 30 micrograms/ml). Five compounds of this series were evaluated in deta...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0307
更新日期:1996-05-31 00:00:00