97805fb2ceb73357aa78aa94107148dc355d4e1c mspeir Tue Sep 22 08:36:22 2026 -0700 Conservation tracks: give the description pages a real Data Access section, refs #34803 The hgdownload link block on these pages had no header, and on 18 of them it sat above the Description, which is where it got overlooked. Move it into an <h2>Data Access</h2> in the usual place, after Methods and before Credits, and add pointers to the Table Browser, the Data Integrator and the REST API, plus the maf* and bigWig* command line tools. 134 pages: 55 had a download block that was moved and labeled, 56 get a list built from hgdownload directories that were checked to exist, 21 have no download directory of their own and so get the Table Browser and API pointers only, and 2 already had a Data Access section that was reworked. Existing download lists are unchanged apart from http -> https and an added target="_blank". Wording follows what each track actually holds, so the alignment-only pages do not claim conservation scores and the Data Integrator is only mentioned where it can really be used, since it does not handle MAF. Also corrects one link: hg18 cons44way pointed at multiz44way/maf, which redirects; it is now multiz44way/maf/. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> diff --git src/hg/makeDb/trackDb/sacCer/sacCer2/multiz7way.html src/hg/makeDb/trackDb/sacCer/sacCer2/multiz7way.html index f790cd7fdf1..0df89dcdc2b 100644 --- src/hg/makeDb/trackDb/sacCer/sacCer2/multiz7way.html +++ src/hg/makeDb/trackDb/sacCer/sacCer2/multiz7way.html @@ -57,38 +57,30 @@ conventions are used: <UL> <LI><B>Single line:</B> No bases in the aligned species. Possibly due to a lineage-specific insertion between the aligned blocks in the $organism genome or a lineage-specific deletion between the aligned blocks in the aligning species. <LI><B>Double line:</B> Aligning species has one or more unalignable bases in the gap region. Possibly due to excessive evolutionary distance between species or independent indels in the region between the aligned blocks in both species. <LI><B>Pale yellow coloring:</B> Aligning species has Ns in the gap region. Reflects uncertainty in the relationship between the DNA of both species, due to lack of sequence in relevant portions of the aligning species. </UL></P> -Downloads for data in this track are available: -<UL> -<LI> -<A HREF="http://hgdownload.soe.ucsc.edu/goldenPath/sacCer2/multiz7way/">Multiz alignments</A> (MAF format), and phylogenetic trees -<LI> -<A HREF="http://hgdownload.soe.ucsc.edu/goldenPath/sacCer2/phastCons7way/">PhastCons conservation</A> (WIG format) -</UL> - <H3>Base Level</H3> <P> When zoomed-in to the base-level display, the track shows the base composition of each alignment. The numbers and symbols on the Gaps line indicate the lengths of gaps in the $organism sequence at those alignment positions relative to the longest non-$organism sequence. If there is sufficient space in the display, the size of the gap is shown. If the space is insufficient and the gap size is a multiple of 3, a "*" is displayed; other gap sizes are indicated by "+".</P> <P> Codon translation is available in base-level display mode if the displayed region is identified as a coding segment. To display this annotation, select the species for translation from the pull-down menu in the Codon Translation configuration section at the top of the page. Then, select one of the following modes: @@ -143,30 +135,59 @@ scores reflect the phylogeny (including branch lengths) of the species in question, a continuous-time Markov model of the nucleotide substitution process, and a tendency for conservation levels to be autocorrelated along the genome (i.e., to be similar at adjacent sites). The general reversible (REV) substitution model was used. Note that, unlike many conservation-scoring programs, phastCons does not rely on a sliding window of fixed size, so short highly-conserved regions and long moderately conserved regions can both obtain high scores. More information about phastCons can be found in Siepel <EM>et al</EM>. (2005).</P> <P> PhastCons currently treats alignment gaps as missing data, which sometimes has the effect of producing undesirably high conservation scores in gappy regions of the alignment. We are looking at several possible ways of improving the handling of alignment gaps.</P> +<h2>Data Access</h2> +<p> +The alignments and the conservation scores can be retrieved for a single region or for a list of +regions with the <a +href="hgTables?db=sacCer2&hgta_group=compGeno&hgta_track=multiz7way">Table Browser</a>, +which returns the alignments in MAF format and the scores as wiggle data. The scores and the +conserved elements, though not the alignments, can also be joined with other annotations in the +<a href="hgIntegrator?db=sacCer2">Data Integrator</a>. For automated access, our <a +href="../goldenPath/help/api.html">REST API</a> serves the alignment and conservation tracks +individually, by name. +</p> +<p> +Downloads for data in this track are available: +<UL> +<LI> +<A HREF="https://hgdownload.soe.ucsc.edu/goldenPath/sacCer2/multiz7way/" target="_blank">Multiz alignments</A> (MAF format), and phylogenetic trees +<LI> +<A HREF="https://hgdownload.soe.ucsc.edu/goldenPath/sacCer2/phastCons7way/" target="_blank">PhastCons conservation</A> (WIG format) +</UL> +</p> +<p> +Genome-wide alignment files are large. Among our command-line programs, <tt>mafsInRegion</tt>, +<tt>mafSpeciesSubset</tt> and <tt>mafFrags</tt> pull out a region, a subset of species, or the +alignment underlying a gene. They can be downloaded from the <a +href="https://hgdownload.soe.ucsc.edu/admin/exe/" target="_blank">utilities directory</a>, and +each one prints its usage when run with no arguments. See our <a +href="../FAQ/FAQdownloads.html">Data Access FAQ</a> for more information. +</p> + <H2>Credits</H2> <P> This track was created at UCSC using the following programs: <UL> <LI> Lastz (formerly Blastz) and multiz by Minmei Hou, Scott Schwartz and Webb Miller of the <A HREF="http://www.bx.psu.edu/miller_lab/" TARGET=_blank>Penn State Bioinformatics Group</A>. <LI> AxtBest, axtChain, chainNet, netSyntenic, and netClass by Jim Kent at UCSC. <LI> PhastCons by Adam Siepel at Cornell University. <LI>"Wiggle track" plotting software by Hiram Clawson at UCSC. </UL> </P>