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A new generation of homology search tools based on probabilistic inference. (2009)

by S R Eddy
Venue:Genome Inform.
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Pfam protein families database

by Robert D. Finn, John Tate, Jaina Mistry, Penny C. Coggill, Stephen John Sammut, Hans-rudolf Hotz, Goran Ceric, Kristoffer Forslund, Sean R. Eddy, Erik L. L. Sonnhammer, Alex Bateman - Nucleic Acids Research, 2008, 36(Database issue): D281–D288
"... Pfam is a comprehensive collection of protein domains and families, represented as multiple sequence alignments and as profile hidden Markov models. The current release of Pfam (22.0) contains 9318 protein families. Pfam is now based not only on the UniProtKB sequence database, but also on NCBI GenP ..."
Abstract - Cited by 771 (13 self) - Add to MetaCart
Pfam is a comprehensive collection of protein domains and families, represented as multiple sequence alignments and as profile hidden Markov models. The current release of Pfam (22.0) contains 9318 protein families. Pfam is now based not only on the UniProtKB sequence database, but also on NCBI GenPept and on sequences from selected metage-nomics projects. Pfam is available on the web from the consortium members using a new, consistent and improved website design in the UK
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... to the profile HMM to produce the full alignment. Curated entries are referred to as Pfam-A entries. The profile HMMs are built and searched using the HMMER software suite (http://hmmer.janelia.org) =-=(4,5)-=-. Sometimes, a single profile HMM cannot detect all homologues of a diverse superfamily, so multiple entries may be built to represent different sequence families in the superfamily. Such related Pfam...

HMMER web server: interactive sequence similarity searching

by Robert D. Finn, Jody Clements, Sean R. Eddy - Nucleic Acids Research , 2011
"... HMMER is a software suite for protein sequence similarity searches using probabilistic methods. Previously, HMMER has mainly been available only as a computationally intensive UNIX command-line tool, restricting its use. Recent advances in the soft-ware, HMMER3, have resulted in a 100-fold speed gai ..."
Abstract - Cited by 260 (0 self) - Add to MetaCart
HMMER is a software suite for protein sequence similarity searches using probabilistic methods. Previously, HMMER has mainly been available only as a computationally intensive UNIX command-line tool, restricting its use. Recent advances in the soft-ware, HMMER3, have resulted in a 100-fold speed gain relative to previous versions. It is now feasible to make efficient profile hidden Markov model (pro-file HMM) searches via the web. A HMMER web server
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...(1) and InterPro (2) and their associated search tools. HMMER 3.0, released in early 2010, includes new technology producing roughly 100-fold speed improvements relative to previous versions of HMMER =-=(3)-=-, such that HMMER3 search times are competitive with BLASTP (4) search times. This new technology includes a combination of striped vector-parallelized alignment algorithms (5) [using single instructi...

Phytozome: a comparative platform for green plant

by David M. Goodstein, Shengqiang Shu, Russell Howson, Rochak Neupane, Richard D. Hayes, Joni Fazo, Therese Mitros, William Dirks, Uffe Hellsten, Nicholas Putnam, Daniel S. Rokhsar , 2011
"... genomics ..."
Abstract - Cited by 83 (1 self) - Add to MetaCart
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...have a hit to the parent that is stronger than the parent’s best outgroup hit. This process is repeated down to the root node. MSAs from MUSCLE (45) and Hidden Markov Model (HMM) profiles from HMMER3 =-=(46)-=- are created for each core family. These profiles are used to ‘pledge’ peptides from non-core genomes into existing core families using HMMScan (46); they can also join core families if they are linke...

Rfam: Wikipedia, clans and the ‘‘decimal’’ release

by Paul P. Gardner, Jennifer Daub, John Tate, Benjamin L. Moore, Isabelle H. Osuch, Sam Griffiths-jones, Robert D. Finn, Eric P. Nawrocki, Diana L. Kolbe, Sean R. Eddy, Alex Bateman - Nucleic Acids Res , 2011
"... The Rfam database aims to catalogue non-coding RNAs through the use of sequence alignments and statistical profile models known as covariance models. In this contribution, we discuss the pros and cons of using the online encyclopedia, Wikipedia, as a source of community-derived anno-tation. We discu ..."
Abstract - Cited by 59 (7 self) - Add to MetaCart
The Rfam database aims to catalogue non-coding RNAs through the use of sequence alignments and statistical profile models known as covariance models. In this contribution, we discuss the pros and cons of using the online encyclopedia, Wikipedia, as a source of community-derived anno-tation. We discuss the addition of groupings of related RNA families into clans and new develop-ments to the website. Rfam is available on the Web at

eggNOG v4.0: nested orthology inference across 3686 organisms

by Sean Powell, Kristoffer Forslund, Damian Szklarczyk, Kalliopi Trachana, Er Roth, Jaime Huerta-cepas, Thomas Rattei, Chris Creevey, Michael Kuhn, Lars J. Jensen, Christian Von Mering, Peer Bork - Nucleic Acids Res , 2014
"... With the increasing availability of various ‘omics data, high-quality orthology assignment is crucial for evolutionary and functional genomics studies. We here present the fourth version of the eggNOG database (available at ..."
Abstract - Cited by 29 (6 self) - Add to MetaCart
With the increasing availability of various ‘omics data, high-quality orthology assignment is crucial for evolutionary and functional genomics studies. We here present the fourth version of the eggNOG database (available at

The intracellular sRNA transcriptome of Listeria monocytogenes during growth in macrophages

by Mobarak A. Mraheil, Andre ́ Billion, Walid Mohamed, Krishnendu Mukherjee, Carsten Kuenne, Jordan Pischimarov, Christian Krawitz, Julia Retey, Thomas Hartsch Trinad Chakraborty - Nucleic Acids Res , 2011
"... Small non-coding RNAs (sRNAs) are widespread effectors of post-transcriptional gene regulation in bacteria. Currently extensive information exists on the sRNAs of Listeria monocytogenes expressed during growth in extracellular environments. We used deep sequencing of cDNAs obtained from fractioned R ..."
Abstract - Cited by 13 (1 self) - Add to MetaCart
Small non-coding RNAs (sRNAs) are widespread effectors of post-transcriptional gene regulation in bacteria. Currently extensive information exists on the sRNAs of Listeria monocytogenes expressed during growth in extracellular environments. We used deep sequencing of cDNAs obtained from fractioned RNA (<500nt) isolated from extracellularly growing bacteria and from L. monocytogenes infected macrophages to catalog the sRNA repertoire during intracellular bac-terial growth. Here, we report on the discovery of 150 putative regulatory RNAs of which 71 have not been previously described. A total of 29 regulatory RNAs, including small non-coding antisense RNAs, are specifically expressed intracellularly. We validated highly expressed sRNAs by northern blotting and demonstrated by the construction and characterization of isogenic mutants of rli31, rli33-1 and rli50 * for intracellular expressed sRNA candi-dates, that their expression is required for efficient growth of bacteria in macrophages. All three mutants were attenuated when assessed for growth in mouse and insect models of infection. Comparative genomic analysis revealed the presence of lineage specific sRNA candidates and the absence of sRNA loci in genomes of naturally occurring infection-attenuated bacteria, with add-itional loss in non-pathogenic listerial genomes. Our analyses reveal extensive sRNA expression as an important feature of bacterial regulation during intracellular growth.
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...or transcription factor binding sites. Most binding sites were detected using regular expression search (FUZZNUC, EMBOSS package) allowing one mismatch. Sigma70 promoters were identified using HMMER3 =-=(40)-=- on six different HMMs from the prokaryotic promoter prediction site (http://bioinformatics.biol.rug.nl/websoftware/ppp/). Terminator identification Terminators were identified using a pre-calculated ...

TIGRFAMs and genome properties in 2013

by Daniel H. Haft, Jeremy D. Selengut, A. Richter, Derek Harkins, Malay K. Basu, Erin Beck - Nucleic Acids Res , 2013
"... TIGRFAMs, available online at ..."
Abstract - Cited by 13 (0 self) - Add to MetaCart
TIGRFAMs, available online at
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...s as originally submitted. Each completed HMM is intended to serve as a proxy for an expert curator, emulating expertise developed at the time of model construction but operating at BLAST-like speeds =-=(2)-=-. TIGRFAMs models describe the level of their specificity Each entry in TIGRFAMs carries a designation that describes how the set of proteins in the family vary in function. If all members of a protei...

SUPERFAMILY 1.75 including a domain-centric gene ontology method

by David A. De Lima Morais, Hai Fang, Owen J. L. Rackham, Derek Wilson, Ralph Pethica, Cyrus Chothia, Julian Gough - Nucleic Acids Research , 2011
"... The SUPERFAMILY resource provides protein domain assignments at the structural classification of protein (SCOP) superfamily level for over 1400 completely sequenced genomes, over 120 meta-genomes and other gene collections such as UniProt. All models and assignments are available to browse and downl ..."
Abstract - Cited by 12 (4 self) - Add to MetaCart
The SUPERFAMILY resource provides protein domain assignments at the structural classification of protein (SCOP) superfamily level for over 1400 completely sequenced genomes, over 120 meta-genomes and other gene collections such as UniProt. All models and assignments are available to browse and download at
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...ted above, there have been major changes to the internal structure of the resource that will affect users. Our (as yet unpublished) analysis has shown that the HMM scoring component of the new HMMER3 =-=(7)-=- produces superior results to that of SAM (8) and therefore, we have converted to HMMER3 scoring. HMMER3 is orders of magnitude faster than SAM or HMMER2 and has enabled us to move to a software cloud...

IMG 4 version of the integrated microbial genomes comparative analysis system

by Victor M. Markowitz, I-min A. Chen, Ken Chu, Ernest Szeto, Manoj Pillay, Anna Ratner, Jinghua Huang, Tanja Woyke, Marcel Huntemann, Iain Anderson, Konstantinos Billis, Neha Varghese, Konstantinos Mavromatis, Amrita Pati, Natalia N. Ivanova, Nikos C. Kyrpides - Nucl. Acids Res
"... analysis system ..."
Abstract - Cited by 11 (0 self) - Add to MetaCart
analysis system
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...of tRNAs is performed using tRNAScan-SE-1.23 (6). Ribosomal RNA genes (5S, 16S and 23S) are predicted using hmmsearch against the custom models generated for each type of rRNA in bacteria and archaea =-=(7,8)-=-. With the exception of tRNA and rRNA, all models from Rfam (9) are used to search the genome sequence. Sequences are first compared with a database containing all the non-coding RNA genes in the Rfam...

TreeFam v9: a new website, more species and orthology-on-the-fly

by Fabian Schreiber, Mateus Patricio, Matthieu Muffato, Miguel Pignatelli, Alex Bateman - Nucleic Acids Res , 2014
"... TreeFam ..."
Abstract - Cited by 10 (0 self) - Add to MetaCart
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...MM-based approach that guarantees that TreeFam families are stable over time. Based on a set of HMMs from the previous TreeFam release, new sequences are assigned to existing families using HMMER 2.3 =-=(15)-=-. For each gene family, alignments are built with either MCoffee (16) for families with <200 members or Mafft (17) otherwise. Alignments are then filtered to include conserved positions as described i...

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