Abstract:
:A phage-display library of random peptides is a combinatorial experimental technique that can be harnessed for studying antibody-antigen interactions. In this technique, a phage peptide library is scanned against an antibody molecule to obtain a set of peptides that are bound by the antibody with high affinity. This set of peptides is regarded as mimicking the genuine epitope of the antibody's interacting antigen and can be used to define it. Here we present PepSurf, an algorithm for mapping a set of affinity-selected peptides onto the solved structure of the antigen. The problem of epitope mapping is converted into the task of aligning a set of query peptides to a graph representing the surface of the antigen. The best match of each peptide is found by aligning it against virtually all possible paths in the graph. Following a clustering step, which combines the most significant matches, a predicted epitope is inferred. We show that PepSurf accurately predicts the epitope in four cases for which the epitope is known from a solved antibody-antigen co-crystal complex. We further examine the capabilities of PepSurf for predicting other types of protein-protein interfaces. The performance of PepSurf is compared to other available epitope mapping programs.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Mayrose I,Shlomi T,Rubinstein ND,Gershoni JM,Ruppin E,Sharan R,Pupko Tdoi
10.1093/nar/gkl975subject
Has Abstractpub_date
2007-01-01 00:00:00pages
69-78issue
1eissn
0305-1048issn
1362-4962pii
gkl975journal_volume
35pub_type
杂志文章abstract::Riboswitches are RNA-based regulatory devices that mediate ligand-dependent control of gene expression. However, there has been limited success in rationally designing riboswitches. Moreover, most previous riboswitches are confined to a particular gene and only perform one-way regulation. Here, we used a library scree...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr609
更新日期:2011-10-01 00:00:00
abstract::Comparison of the nucleotide sequence of mRNAs coding for several vertebrate actins revealed a high degree of sequence homology in the 3' untranslated region (3' UTR) between those mRNAs coding for homologous (isotypic) actins in different organisms but not between mRNAs coding for very similar isoforms differing in t...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/13.10.3723
更新日期:1985-05-24 00:00:00
abstract::Understanding networks of protein-protein interactions constitutes an essential component on a path towards comprehensive description of cell function. Whereas efficient techniques are readily available for the initial identification of interacting protein partners, practical strategies are lacking for the subsequent ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm563
更新日期:2007-01-01 00:00:00
abstract::A non-enzymic protein factor that increases the in vitro rate of synthesis by HeLa DNA polymerase alpha 15- to 30-fold with denatured DNA as template has been partially purified from the cytoplasmic fraction of HeLa cells. The stimulatory effect is highly specific for HeLa DNA polymerase alpha and for DNA templates th...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/5.1.221
更新日期:1978-01-01 00:00:00
abstract::Unoxidized crystalline silicon, characterized by high purity, high homogeneity, sturdiness and an atomically flat surface, offers many advantages for the construction of electronic miniaturized biosensor arrays upon attachment of biomolecules (DNA, proteins or small organic compounds). This allows to study the inciden...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gnj034
更新日期:2006-02-28 00:00:00
abstract::Synchronous plasmodia of cycloheximide-sensitive and cycloheximide-resistant strains of Physarum polycephalum were labelled with 3[H]-deoxyadenosine in pulse and pulse-chase experiments in presence and absence of cycloheximide. The replication products were studied with alkaline sucrose gradient sedimentation analysis...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/4.2.405
更新日期:1977-02-01 00:00:00
abstract::The unwinding of supercoiled phi X174 RFI DNA induced by the tumorigenic (+) and non-tumorigenic (-) enantiomers of trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (BPDE) has been investigated by agarose slab-gel and ethidium titration tube gel electrophoresis. The differences in adduct conformat...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/20.23.6167
更新日期:1992-12-11 00:00:00
abstract::Laser microirradiation is a powerful tool for real-time single-cell analysis of the DNA damage response (DDR). It is often found, however, that factor recruitment or modification profiles vary depending on the laser system employed. This is likely due to an incomplete understanding of how laser conditions/dosages affe...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkv976
更新日期:2016-02-18 00:00:00
abstract::We have sequenced the 480 base pair (bp) repeating unit of the 5S RNA genes of the Dipteran fly Calliphora erythrocephala and compared this sequence to the three known 5S RNA gene sequences from the Dipteran Genus Drosophila (1,2). A striking series of five perfectly conserved homologies identically positioned within ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/12.21.8193
更新日期:1984-11-12 00:00:00
abstract::Signaling pathways constitute a valuable source of information that allows interpreting the way in which alterations in gene activities affect to particular cell functionalities. There are web tools available that allow viewing and editing pathways, as well as representing experimental data on them. However, few metho...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkt451
更新日期:2013-07-01 00:00:00
abstract::We have synthesized the tetradecamer GAGCXGATAACAAG containing a part of the sequence of the lactose operator. A guanine base in the sequence is replaced by the adduct of the carcinogen 2-acetylaminofluorene with guanine. Under the standard conditions of de-protection, the fluorene moiety is lost, leaving behind a gua...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/11.15.5093
更新日期:1983-08-11 00:00:00
abstract::Nuclei from frozen calf thymus suspended in buffer were analyzed for metal content prior to and after repeated washing. After three such extractions about 0.1 micrograms Zn/mg DNA and 0.025 micrograms Cu/mg DNA remained tightly associated with chromatin. This level of metal was essentially unchanged with subsequent wa...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/9.21.5811
更新日期:1981-11-11 00:00:00
abstract::Isogenic pluripotent stem cells are critical tools for studying human neurological diseases by allowing one to study the effects of a mutation in a fixed genetic background. Of particular interest are the spectrum of autism disorders, some of which are monogenic such as Timothy syndrome (TS); others are multigenic suc...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkv164
更新日期:2015-05-26 00:00:00
abstract::Chicken globin double-stranded cDNA was synthesised from anaemic adult reticulocyte alpha- and beta-globin mRNA and ligated into the Hind III site of pBR322 using synthetic Hind III decamers. Transformation of E. coli x1776 resulted in the production of a number of alpha- and beta-cDNA clones. One of the alpha-type cl...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/8.6.1187
更新日期:1980-03-25 00:00:00
abstract::The potent anticancer drug actinomycin D (ActD) functions by intercalating into DNA at GpC sites, thereby interrupting essential biological processes including replication and transcription. Certain neurological diseases are correlated with the expansion of (CGG)n trinucleotide sequences, which contain many contiguous...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkt084
更新日期:2013-04-01 00:00:00
abstract::Spermine-DNA complexes have been examined by small-angle and wide-angle X-ray scattering as well as by circular dichroism studies. Condensed complexes are building up below a critical ionic strength. We have found that at one and the same ionic strength condensed complexes having two different supramolecular structure...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/7.5.1297
更新日期:1979-11-10 00:00:00
abstract::The 279-bp major breakpoint region (mbr) within the 3'-untranslated region (3'-UTR) of the BCL2 gene is a binding site of special AT-rich sequence binding protein 1 (SATB1) that is well known to participate in the long-range regulation of gene transcription. Our previous studies have revealed that the mbr could regula...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr023
更新日期:2011-06-01 00:00:00
abstract::Programmed -1 ribosomal frameshifting is employed in the expression of a number of viral and cellular genes. In this process, the ribosome slips backwards by a single nucleotide and continues translation of an overlapping reading frame, generating a fusion protein. Frameshifting signals comprise a heptanucleotide slip...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gks629
更新日期:2012-09-01 00:00:00
abstract::Natural transformation is a major mechanism of horizontal gene transfer in bacteria that depends on DNA recombination. RecA is central to the homologous recombination pathway, catalyzing DNA strand invasion and homology search. DprA was shown to be a key binding partner of RecA acting as a specific mediator for its lo...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku349
更新日期:2014-06-01 00:00:00
abstract::Myocyte enhancer binding factor 2 (MEF2) proteins belong to the MADS box family of transcription factors and four MEF2 proteins, MEF2A, MEF2B, MEF2C and MEF2D, have been found. MEF2 proteins have been shown to play critical roles in differentiation of muscles and neuronal tissues. How transactivational activity of MEF...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.13.2836
更新日期:2001-07-01 00:00:00
abstract::A synthetic gene encoding the Schizophyllum commune xylanase XynA was constructed by a novel PCR-based procedure. Three long oligonucleotides were synthesized and used in combination with flanking PCR primers to generate a 607 base pair gene which contained 31 unique locations for restriction enzyme cleavage. The amin...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/21.21.4923
更新日期:1993-10-25 00:00:00
abstract::Human cytomegalovirus (HCMV) terminase is composed of subunits pUL56 (130 kDa) and pUL89 ( approximately 75 kDa), encoded by the UL56 and UL89 genes. In a recent investigation, we demonstrated that the main ATPase activity is associated with the large terminase subunit pUL56. The protein has two putative ATP-binding s...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkg229
更新日期:2003-03-01 00:00:00
abstract::DNA polymerase mu is a member of the mammalian pol X family and reduces deletion during chromosome break repair by nonhomologous end joining (NHEJ). This biological role is linked to pol mu's ability to promote NHEJ of ends with noncomplementary 3' overhangs, but questions remain regarding how it performs this role. W...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn164
更新日期:2008-05-01 00:00:00
abstract::The potency of the immune response has still to be harnessed effectively to combat human cancers. However, the discovery of T-cell targets in melanomas and other tumors has raised the possibility that cancer vaccines can be used to induce a therapeutically effective immune response against cancer. The targets, cancer-...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn673
更新日期:2009-01-01 00:00:00
abstract::We have assessed the ability of nucleosomes to influence the formation of mammalian topoisomerase II-DNA complexes by mapping the sites of cleavage induced by four unrelated topoisomerase II inhibitors in naked versus nucleosome-reconstituted SV40 DNA. DNA fragments were reconstituted with histone octamers from HeLa c...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/18.15.4553
更新日期:1990-08-11 00:00:00
abstract::DNA lengths in the structural repeat units of Chinese hamster ovary (CHO) and chicken erythrocyte chromatin were compared by analyzing the sizes of DNA fragments produced after treatment of nuclei with staphylococcal nuclease. The repeat length of CHO chromatin (173 +- 4 BP) is about 20 base pairs (BP) smaller than th...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/4.4.771
更新日期:1977-04-01 00:00:00
abstract::1731, a Drosophila retrotransposon was first described as having a transcription activity which was negatively regulated by 20-hydroxyecdysone (20-OH), the steroid molting hormone of insects. Using constructions expressing the bacterial chloramphenicol-acetyltransferase (CAT) gene under the control of the entire or de...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/19.20.5689
更新日期:1991-10-25 00:00:00
abstract::Few transcriptional regulatory networks have been described in non-model organisms. In Entamoeba histolytica seminal aspects of pathogenesis are transcriptionally controlled, however, little is known about transcriptional regulatory networks that effect gene expression in this parasite. We used expression data from tw...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm028
更新日期:2007-01-01 00:00:00
abstract::To explain the activation of transcription by a remote enhancer, two models are most often considered, namely looping and scanning. A scanning model, also referred to as 'polymerase entry site' model predicts that for two adjacent promoters the one proximal to an enhancer would be preferentially activated. Preferentia...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/17.22.8931
更新日期:1989-11-25 00:00:00
abstract::Ethidium causes the cleavage of DNA via a light and oxygen dependent process. Using covalently closed circular DNA as a substrate, the saturation kinetics and the dependence on superhelical density of the cleavage indicate that intercalated ethidium is mainly responsible for nicking DNA. Superoxide dismutase has littl...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/3.2.315
更新日期:1976-02-01 00:00:00