To perform a screen of genomic regions your alignments need to fulfill some requirements: The identifier of the first sequence in the first alignment is used as reference. Each provided alignment must contain a sequence with this identifier and at least for this reference sequence correct genomic positions must be provided in the alignment. The identifier can be of the form species.chrom. In that case each alignment is required to have a sequence from the reference species. Refer to the help pages for additional information an examples.

Paste your alignment(s) here: Paste one or more alignments into this field. You can choose between the following formats: MAF and XMFA. You can paste at most 1000 lines into this field.	[clear]
Or upload a file: Upload a file containing one or more alignments in the following formats: MAF and XMFA. The file size for upload is limited to XX MB.
Format: Select the format of your alignment(s). Valid alignment formats are: MAF and XMFA. If you upload more than one alignment all alignments must be of the same format.
MAFXMFA
Upload a BED annotation file: You can provide an annotation file in BED format. The predictions will be compared with the annotations given in this file. Only the first 4 fields (sequence identifier, start, stop, name) are considered. This feature is optional.