TRIPS: Periodic Conservation of Single Amino Acids

TRIPS
Tandem Repeats In Protein sequences

Periodic Conservation of Single Amino Acids
Observed in 80,000 proteins from SWISSPROT database (Release 38 of July 1999)

Minimum Number of Periodic Repetitions*

Number of Proteins

Amino Acids conserved periodically at every Second Position

15

204

Amino Acids conserved periodically at every Third Position

15

131

Amino Acids conserved periodically at every Fourth Position

12

225

Amino Acids conserved periodically at every Fifth Position

12

108

Amino Acids conserved periodically at every Sixth Position

10

224

Amino Acids conserved periodically at every Seventh Position

10

159

Amino Acids conserved periodically at every Eighth Position

10

147

Amino Acids conserved periodically at every Ninth Position

10

99

Amino Acids conserved periodically at every Tenth Position

10

128

*Allowing a maximum of 10% mismatch

To avoid redundancy, output files have been edited to remove entries containing periodic patterns due to exact oligo-peptide repeats already reported in section-2 of TRIPS database

	Minimum Number of Periodic Repetitions*	Number of Proteins
Amino Acids conserved periodically at every Second Position	15	204
Amino Acids conserved periodically at every Third Position	15	131
Amino Acids conserved periodically at every Fourth Position	12	225
Amino Acids conserved periodically at every Fifth Position	12	108
Amino Acids conserved periodically at every Sixth Position	10	224
Amino Acids conserved periodically at every Seventh Position	10	159
Amino Acids conserved periodically at every Eighth Position	10	147
Amino Acids conserved periodically at every Ninth Position	10	99
Amino Acids conserved periodically at every Tenth Position	10	128