Enter your RNA sequence (single FASTA format, &lt= 400nt)
Samples:  Hammerhead ribozyme, tRNA, H/ACA snoRNA, TPP-riboswitch

Prediction of RNA secondary structure. McCaskill(BL) McCaskill(Turner) CONTRAfold : specify the inference engine 2^10 2^9 2^8 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 2^-1 2^-2 2^-3 2^-4 2^-5 : weight of base pairs	Prediction of RNA secondary structure by using homologous sequences. McCaskill(BL) McCaskill(Turner) CONTRAfold : specify the inference engine for secondary structure CONTRAlign ProbCons : specify the inference engine for pairwise alignment 2^10 2^9 2^8 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 2^-1 2^-2 2^-3 2^-4 2^-5 : weight of base pairs 0.1 0.01 0.001 0.0001 : E-value for homology search against Rfam 10 20 30 40 50 : number of homologous sequences
Prediction of RNA pseudoknot based on maximizing expected accuracy. McCaskill(BL) McCaskill(Turner) CONTRAfold NUPACK : specify the inference engine (NUPACK can be selected only when RNA length is &lt= 100nt) 2^10 2^9 2^8 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 2^-1 2^-2 2^-3 2^-4 2^-5 : weight of base pairs (level 2)	Rchange Calculation of energy changes of RNA secondary structures after base mutations. 50 100 200 500 : maximal span of base pairs
CapR Calculation of probabilities that each RNA base position is located within each secondary structural context. 50 100 200 500 : maximal span of base pairs	Raccess Calculation of of structural accessibility of RNA transcripts. 50 100 200 500 : maximal span of base pairs
RintD Validation of RNA secondary structure. structure.1 predicted by CentroidFold 2^10 2^9 2^8 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 2^-1 2^-2 2^-3 2^-4 2^-5 : weight of base pairs Your structure (dot-bracket format without sequence) structure.2 predicted by RNAfold Your structure (dot-bracket format without sequence)	RintW Capturing alternative secondary structures of RNA. McCaskill(BL) McCaskill(Turner) CONTRAfold : specify the inference engine for canonical structure 2^10 2^9 2^8 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 2^-1 2^-2 2^-3 2^-4 2^-5 : weight of base pairs