Sequencher 4.05 for Windows can import Phred quality scores fromPhred-generated quality files (".QUAL" files), and associate thequality scores with chromatograms (SCF files) as long as the SCFfiles are in the same directory as the. Here, we show how to import, view, and use PHRED quality scores inSequencher.Ī note of caution: please always make sure that you importPHRED-generated SCF files when importing into Sequencher! If you donot generate SCF files, or place the FASTA files in the samedirectory as the original ABI traces, Sequencher will show PHREDquality scores with ABI base calls - which does not make any sense,since ABI and PHRED basecalls almost always differ! Qualityscores can be used for "end clipping", and typically give betterresults than older methods based on ambiguities. However, using PHRED quality scores in Sequencher cansubstantially reduce the efforts in sequencing projects. An example of how macPHRED-MacPHRAP andSequencher together can give much faster and better assemblies isshown at The Windows version of Sequencher (4.05), however, only offeredsupport for Phred quality scores, but no import functions forPHRAP-generated assemblies please contact GeneCodes Corporation with questions about release plans. If you encounter problems importing Phred results into Sequencher, please visit the Sequencher troubleshooting page.Īs of February 2001, newest Macintosh version of Sequencher(4.1.2) provides functions to import PHRAP-generated assemblies andPHRED quality scores. ![]() ![]() Sequencher is a leading tool for contig editing and assembly developed by Gene Codes Corporation. This page describes how to import Phred results into Sequencher. ![]() Importing Phred Results into Sequencher Importing Phred results into Sequencher
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