... involved either in the assembly of the immature HIV-1 capsid, or in the reassembly of CA into a mature capsid. The detailed description of the structure and conformational dynamics of these interfaces, together ... helix 4 of the NTD of a neighboring subunit in the hexamer. Additional contacts involve helix 11 of the CTD and the C-terminal end of helix 7 of the NTD of the neigh- boring subunit. The NTD–CTD ... of the precise residues and interac- tions involved in the NTD–CTD interface [46]. Most of these involve side chains from helix 8 of the CTD which pack against the N-terminal end of helix 4 of the...
Ngày tải lên: 18/02/2014, 06:20
... which corresponds to the a-helix 7 of NTD. This region is important for the formation of CA hexamers [6]; there- fore, this peptide could inhibit the formation of the hexamers, and assembly of the HIV-1 ... nonregular mature cores. The X-ray structures of these two mutants differ from that of wild-type, and those of the assembly- competent mutants E187A and N183A: the conformations of the two assembly- incompetent mutants ... the X-ray structure of the nonmu- tated-CTD–CAI complex [28] (Fig. 2A, main panel). The aromatic moiety of Phe3, together with Leu6 and Ile1, are the residues of CAI with the largest number of...
Ngày tải lên: 18/02/2014, 06:20
Tài liệu Báo cáo khoa học: Evidence that the assembly of the yeast cytochrome bc1 complex involves the formation of a large core structure in the inner mitochondrial membrane pdf
... possible role of this chaperone in the stabilization of the core struc- ture of the bc 1 complex can be excluded on the basis of the existence of the 500 kDa bc 1 sub-complex also in the DBCS1 deletion ... to the 500 kDa bc 1 sub-complex. Therefore, the pres- ence of both Qcr9p and Bcs1p is required for the inser- tion of ISP into the bc 1 sub-complex, but the presence of only one of these two ... also unknown. Furthermore, as in the case of the biogene- sis of other multi-subunit complexes of the mitochon- drial respiratory chain, the assistance of specific chaperone proteins is also required. The...
Ngày tải lên: 18/02/2014, 08:20
Tài liệu Báo cáo khóa học: Further insights into the assembly of the yeast cytochrome bc1 complex based on analysis of single and double deletion mutants lacking supernumerary subunits and cytochrome b pdf
... antibodies to the subunits of the yeast bc 1 complex indicated on the left side of the blots. 1212 V. Zara et al. (Eur. J. Biochem. 271) Ó FEBS 2004 Further insights into the assembly of the yeast ... relatively unaffected. Therefore, the absence of subunit 6 appeared to alter the rates of processing of two of the redox subunits and caused minor changes in amounts of the small supernumerary ... transmembrane helix of subunit 8 and helices G and H1 of cytochrome b and between the N-terminus of subunit 8 and helix a of cytochrome b. The figure was constructed from the crystal structure of the yeast...
Ngày tải lên: 19/02/2014, 12:20
Tài liệu Báo cáo khoa học: The role of the ESSS protein in the assembly of a functional and stable mammalian mitochondrial complex I (NADH-ubiquinone oxidoreductase) pptx
... must still be determined whether its absence in the V79-G18 mutant is the result of the missing ESSS subunit alone, or whether the absence of ESSS causes the f ailure of other integral membrane subunits ... and the effect of the absence of intact complex I, but the results are too preliminary in this regard. Heterologous expression of the ESSS-HA subunit The localization of the ESSS subunit in the ... truncated at the C-terminus of the targeting sequence; the m utants are null mutants for the ESSS subunit. There is no detectable complex I assembly and a ctivity in the absence of the ESSS subunit...
Ngày tải lên: 19/02/2014, 16:20
Tài liệu History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery pdf
... of the old Memphite kings. These facts, of the situation of Itht-taui, of their burial in the southern an ex of the old necropolis of Memphis, and of the fori of their tombs (the true Upper Egyptian ... and the mountains on the west bank of the Nile opposite Luxor. Many of these are of the same type as those found on the surface of the mountain plateau which lies at the head of the great wadi of ... the Fruit-house," the "Tell of the Tablets," and the "Great Tell," and, rising as they do in the centre of the site, they mark the position of the temples and the other principal...
Ngày tải lên: 22/02/2014, 04:20
ORDER OF BUSINESS of the first part of the 2007 Ordinary Session (22-26 January 2007) adopted by the Assembly on 22 January 2007 doc
... the Chair: Mr Miguel Barceló Pérez (Spain, EPP/CD)) a. Examination of credentials (Doc. 11124) b. Election of the President of the Assembly c. Election of the Vice-Presidents of the Assembly ... moratorium on the death penalty by Council of Europe member states" f. Adoption of the order of business g. Adoption of the minutes of the meeting of the Standing Committee (17 November ... 7.30 p.m. End of the sitting - 2 - Monday 22 January 2007 8 a.m. Bureau of the Assembly 9.30 a.m. Political groups 11.30 a.m. 1. Opening of the first part of the 2007 Ordinary...
Ngày tải lên: 06/03/2014, 19:20
Báo cáo khoa học: YidC is required for the assembly of the MscL homopentameric pore potx
... insertion of MscL. In the absence of YidC, assembly of the homopentameric MscL complex was strongly reduced, suggesting a late role for YidC in the biogenesis of MscL. The data are consistent with the view ... traverse the inner membrane, thus validating the assay condi- tions. Western blot analysis of samples taken prior to the pulse labelling confirmed the depletion of YidC. To evaluate the role of the ... membrane insertion, the role of the SRP could be investigated by SCAM using strain FF283, which carries the 4.5S RNA gene encoding the essential RNA component of the SRP under control of the lac promoter...
Ngày tải lên: 07/03/2014, 02:20
Báo cáo khoa học: The Vps4 C-terminal helix is a critical determinant for assembly and ATPase activity and has elements conserved in other members of the meiotic clade of AAA ATPases pdf
... not the b domain. The distinguishing feature of members of the meiotic clade of AAA ATPases is the SRH motif, which dif- fers from that of other AAA ATPases [24]. The pair of Arg residues in the ... for the RDF sequence in modulating the function of the SRH. The C-terminal region of human VPS4B contains the b domain (b strands 7 and 8), the final helix of the AAA domain (a helix 10) and the ... by their first three amino acids. The TRP sequence (TRPTVNEDDLLK) is at the start of the helix, whereas the RDF sequence (RDFGQEGN) is at the end of the helix (Fig. 1B,C). To determine whether the b...
Ngày tải lên: 07/03/2014, 05:20
Báo cáo khoa học: Interaction between Lim15/Dmc1 and the homologue of the large subunit of CAF-1 – a molecular link between recombination and chromatin assembly during meiosis pot
... Because of the vari- ous interactions of Lim15/Dmc1–CAF-1–PCNA, we suggest that they act in multiple ways at the site of meiotic recombination and contribute to the subse- quent assembly of chromatin. ... synthesis events during the meiotic pro- phase. Based on the current model, we propose the role of the CAF-1–PCNA complex during meiosis (Fig. 4). PCNA recruits DNA polymerase at the end of single-strand ... neutralization of the pH by the addition of 1 m Tris/HCl, pH 7.5, the bound material was analysed by immunoblotting with either anti-CcCac1L or anti-CcLim15 IgG, both at a dilution of 1 : 1000. To test the...
Ngày tải lên: 07/03/2014, 05:20
Structure of the S15,S6,S18-rRNA Complex:Assembly of the 30S Ribosome Central Domain
... regions of the central domain RNA are not involved in directing assembly of the domain but rather are displayed on the sur- face of a preassembled RNP core. Hence, for- mation of the core of the ... and S18. The structure of the complex demonstrates the central role of S15-induced reorganization of central domain RNA for the subsequent steps of ribosome assembly. The recent explosion of structural ... fold, while the S15 contacts above the internal loop of helix 22 and to the tetraloop of helix 23a stabilize the tertiary fold of the upper three-helix junction. The tertiary structure of the upper...
Ngày tải lên: 13/03/2014, 19:08
Báo cáo khóa học: Assembly of the silk fibroin elementary unit in endoplasmic reticulum and a role of L-chain for protection of a1,2-mannose residues in N-linked oligosaccharide chains of fibrohexamerin/P25 ppt
... respect to the second event in the assembly of the elementary unit, it is of interest to note that the extremely small amount of fibroin secreted into thin cocoons of the Nd-s D mutant formed the H 6 fhx 1 -type ... significance of the assembly of the elementary unit of fibroin in ER It was demonstrated in this study that the elementary unit of fibroin, having the same molar ratio of H- and L-chains, and fhx/P25 as of ... events in the assembly of the (H-L) 6 fhx 1 -type elementary unit: (a) the formation of disulfide-linked H-L heterodimers and (b) the formation of the three-component protein complex in which the non- covalent...
Ngày tải lên: 16/03/2014, 16:20
Báo cáo khoa học: PA700, the regulatory complex of the 26S proteasome, interferes with a-synuclein assembly pptx
... (a) the hydrolysis of ATP to promote the assembly of the 26S proteasome from the PA700 complex and 20S protea- some; (b) the opening of the channel leading to the 20S proteasome; and (c) the ... behavior of WT a-synuclein in the absence and the presence of PA700. Aliquots of WT a-synuclein assembly reac- tions in the absence (–) or the presence (+) of PA700, 1 h and 18 h after the onset of the ... degeneration of the dopaminergic neurons of the substantia nigra [1]. Although the majority of PD cases are sporadic, rare familial forms of PD have been reported with the identification of mutations in the genes...
Ngày tải lên: 16/03/2014, 22:20
Báo cáo khoa học: Factors involved in the assembly of a functional molybdopyranopterin center in recombinant Comamonas acidovorans xanthine dehydrogenase pot
... dependence of the level of culture aeration in the expression of recombinants. These results, together with the results presented in the current report, demon- strate that the incorporation of MPT ... The protein product of xdhC appears to exhibit a redox role in maturation of the XDH ABC by eliminating the dependence of its functional expression on the redox state of the cell (Table 1). These ... primers. The 5¢ termini of the PCR primers were synthesized at equal nucleotide concentrations. The second primer was derived either from the known 5¢ end of the xdhA gene (ggcaggaattgaatgcag) or the...
Ngày tải lên: 16/03/2014, 23:20
PRAISE FOR THE FIRST EDITION OF THE ART OF ASSEMBLY LANGUAGE pdf
... 1-6 shows the layout of the flags within the lower 16 bits of the EFLAGS register. Figure 1-6: Layout of the FLAGS register (lower 16 bits of EFLAGS) Of the eight flags that are of interest ... World of Assembly Language 21 If, during program execution, the expression evaluates true, then the code between the then and the endif executes. If the expression evaluates false, then the ... how the 80x86 stores bytes, words (2 bytes), and double words (4 bytes) in memory. The memory address of each of these objects is the address of the first byte of each object (that is, the...
Ngày tải lên: 22/03/2014, 09:20
Báo cáo khoa học: Understanding the complex mechanisms of b2-microglobulin amyloid assembly potx
Ngày tải lên: 28/03/2014, 22:20
THE KYBALION A Study of The Hermetic Philosophy of Ancient Egypt and Greece potx
Ngày tải lên: 29/03/2014, 02:21
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