What is contained in the tab-delimited format of the probe sequence download file?
The probe sequence download file in the Download Center is a tab-delimited file containing the following columns:
| Probe Set Name: For example, 1007_s_at |
| Probe X: The X coordinate of the probe sequence on the GeneChip® probe array. |
| Probe Y: The Y coordinate of the probe sequence on the GeneChip probe array. |
| Probe Interrogation Position: The position of the 13th ("middle") nucleotide of the probe sequence as it aligns on the consensus/exemplar sequence. |
| Probe Sequence: The 25-base perfect match sequence. |
| Target Strandedness: The sense/antisense orientation of the target sequence that can hybridize with the probe sequence. |
Note: Probe Sequence databanks in the NetAffx™ Analysis Center have an additional column called, "Serial Order". This column provides the relative order of probe sequences as they align with the consensus/exemplar sequence.