HMM2 Build Element
Builds an HMM profile from a multiple sequence alignment. The HMM profile is a statistical model that captures position-specific information about how conserved each column of the alignment is and which residues are likely.
Element type: hmm2-build
Parameters
| Parameter | Description | Default value | Parameter in Workflow File | Type |
|---|---|---|---|---|
| Profile name | Descriptive name of the HMM profile. | profile-name | string | |
| HMM strategy | Specifies the kind of alignments you want to allow. Available values are: 0 - for hmms, 1 - for hmmls, 2 - for hmmfs, 3 - for hmmsw. | hmmls | strategy | numeric |
| Calibrate profile | Enables/disables optional profile calibration. An empirical HMM calibration costs time but it only has to be done once per model and can greatly increase the sensitivity of a database search. | True | calibrate | boolean |
| Parallel calibration | Number of parallel threads that the calibration will run in. | 1 | calibration-threads | numeric |
| Standard deviation | Standard deviation of the synthetic sequence length. A positive number. Note that the Gaussian is left-truncated so that no sequences have lengths. | 200.0 | deviation | numeric |
| Fixed length of samples | Fixes the length of the random sequences to a positive (and reasonably sized) integer. The default is to generate sequences with a variety of different lengths, controlled by a Gaussian distribution. | 0 | fix-samples-length | numeric |
| Mean length of samples | Mean length of the synthetic sequences, positive real number. | 325 | mean-samples-length | numeric |
| Number of samples | Number of synthetic sequences. If less than about 1000, the fit to the EVD may fail. Higher numbers will give better determined EVD parameters. The default is 5000, chosen as a tradeoff between accuracy and computation time. | 5000 | samples-num | numeric |
| Random seed | The random seed, a positive integer. The default is to use time() to generate a different seed for each run, which means that two different runs of hmmcalibrate on the same HMM will give slightly different results. You can use this option to generate reproducible results for different hmmcalibrate runs on the same HMM. | 0 | seed | numeric |
Input/Output Ports
The element has 1 input port:
Name in GUI: Input MSA
Name in Workflow File: in-msa
Slots:
| Slot in GUI | Slot in Workflow File | Type |
|---|---|---|
| MSA | msa | msa |
And 1 output port:
Name in GUI: HMM profile
Name in Workflow File: out-hmm2
Slots:
| Slot in GUI | Slot in Workflow File | Type |
|---|---|---|
| HMM profile | hmm2-profile | hmm2-profile |