PLACE Homology Search

Searching cis-element motif by FASTA.

We recommend you to search motif by PLACE Signal Scan Search not by FASTA.

Notes on homology search (July 14, 1997; Ken Higo):

We do not recommend BLAST program for searching your query sequence for the presence of cis-regulatory element in PLACE database. BLAST program compares, by the default setting, a sequence of contiguous 12 nucleotides from your query sequence with those of the cis-elements in the PLACE database. Cis-element having 12 base or longer is very rare, and therefore the search with BLAST will not find match for the most of query sequences.

FASTA program will work. It will report the results of homology search according to the scores in the descending order. We suggest that the number of alignment to be shown be set around 114, i.e., the number near the total number of the data in the PLACE database. You will find the perfect matches near the bottom of the list of the alignments, because the short cis-elements (e.g., 4-5 bases) will give low score even though they show 100% identity with a portion of your query sequence.

Mail Address: (Search result will send to next mail address)
Validate address at submission

Query Sequence:

Your Query Comment:(This string will be added to Subject)

Program:

Data Base Library:

Search reverse strand:

OFF:FastA will search for *ONLY* Query that you input.
ON:FastA will search for *ONLY* reverse strand of Query that you input.

Ktup:

Scores:

Alignments:

Matrix:

Optcut:

Mode:

Histgram

Dna

Init1

S_W