This choice will determine, against which
reference genome the designs will be tested.
In the textarea might be entered either a ";"
separated list of official gene symbols or Accession IDs such as:

HumanZebrafishFly
ENSG00000067057ENSDARG00000090752FBgn0000442
ENSG00000170525ENSDARG00000063570FBgn0250906
ENSG00000065675ENSDARG00000074914FBgn0020618
ENSG00000183049ENSDARG00000032801FBgn0044323


Or one or more FASTA format sequences e.g:
>some sequence
ATATCGATGCTAGCTAGCT
GATCGTAGCTAGCTAGCTA

Transcript IDs (ENST...) can be entered in subsection 4
but still require the respective gene to be entered here.
>some sequence
ATATCGATGCTAGCTAGCT
GATCGTAGCTAGCTAGCTA
OR:

HumanZebrafishFly
ENSG00000067057ENSDARG00000090752FBgn0000442
ENSG00000170525ENSDARG00000063570FBgn0250906
ENSG00000065675ENSDARG00000074914FBgn0020618
ENSG00000183049ENSDARG00000032801FBgn0044323


The file might not be larger than 20 MB.
Minimum length of the nucleotide sequence one arm of the TALEN dimer should recognize.
Maximum length of the nucleotide sequence one arm of the TALEN dimer should recognize.
Length of the sequence that is to be saved 3' to the cut site.
Length of the sequence that is to be saved 5' to the cut site.
Check if designs shell be exclusively hitting some gene found in the database.
In consequence, genes that are not annotated we be excluded.
Check if designs shell be exclusively hitting exons found in the database.
Check to make designes hit exclusively outside of predicted CpG islands.
(Outside potential hypermethylated regions)
Put a number such as 1 to find designs exclusively hitting a specific exon.
Or the word any to find designs that hit any exon.
Put a Transcript ID such as ENST00000369985 to find designs exclusively hitting a specific transcript.
Or the word any to find designs that hit any transcript.
This function is only implemented for single gene analyses.
Check this box to make the program find and save the genomic sequence up- and downstream off the intended cut side.
In case this exceeds the gene length in the database,the stored sequence will be shorter.
If this is checked, the program will asses if there is a unique restriction enzyme recognition site in the spacer region of the TALEN design.
If this box is checked, the programm will test if and what restriction sites are in the TALEN and its surrounding sequence.
Having this box checked tells the programm to assess restricion enzyme cut sites in the whole target sequence.
Choose between different pre-defined restriction enzyme subsets.
In the following subsection, the tool kit used for TALEN assembly is specified .
This choice will inlfuence which alphabet is used to translate the nucleotide sequences
into RVD sequences and the allowed TALEN lengths.
Voytas Lab Golden Gate TALEN Kit: G => NN or NK, with length from 11 to 30 RVDs
Voytas Lab Golden Gate TALEN Kit 2.0:G => NN or NK or NH, with length from 11 to 30 RVDs
Hornung Lab LIC TAL Effector Assembly Kit: G => NK, with length of 18 RVDs
Joung Lab TAL Effector Engineering Reagents (FLASH assembly): G => NN, with length from 8 to 20 RVDs
Zhang Lab TALE toolbox: G => NN, with length from 18 to 20 RVDs
It can be specified if the TALEN designs
should be checked for any secondary off-target effects.
This means if they will cut in any exogenous, foreign introduced sequence.
Check every individual off-target or paste a set of FASTA sequences into the text area
This text area only accepts FASTA format sequences as input e.g.:
>some sequence
ATATCGATGCTAGCTAGCT
GATCGTAGCTAGCTAGCTA

1. Organism:



[HELP]



2. Target sequence:





FASTA Reset
[HELP]



Alternatively upload a file in FASTA format or a new line separated list of gene symbols and/or accesion numbers

[HELP]



3. Design purpose:


designs fulfill a certain purpose


purpose of usage

omit similar designs (differing less than 2 bp)
omit overlapping designs
show forward (5'-> 3' binding) designs
show reverse (3'-> 5' binding) designs


click here to show TALEN properties





4. Sequence annotation and filtering:


gene hits [HELP]

exon hits [HELP]

no hits in CpG islands [HELP]

exon specificity [HELP]

transcript specificity [HELP]



retrieve and save a recombination donor matrix [HELP]

assess unique restriction sites [HELP]

assess any restriction sites [HELP]

assess restriction sites of the whole sequence [HELP]

restriction enzyme library [HELP]


5. Assembly:

Choose which Kit is used for assembly [HELP]




5. Off-targets analysis:

Analyse Off-targets

select off-target database

Exclude designs with more than X off-targets

Tolerated edit distance to the target sequence

number of mismatches tolerated

Bowtie2 pre-sets

Select to check for secondary off-targets [HELP]



Please choose the targets to test and/or paste a custom sequence into the text area below.
The pasted sequence should be FASTA format.

[HELP]

6. Output:

Maximum number of results per exon

Produce a GFF formatted output file

Produce a tab delimited output file

Create an image showing genomic context

Output the result table to the browser window




Boutros lab, E-TALEN-Version 2.5
For suggestions please contact us at crispr@dkfz.de