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Commit e451eef4 authored by Sander Bollen's avatar Sander Bollen
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expose new options in primerdesign

parent 8e4ba82e
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Showing with 54 additions and 17 deletions
README.md
View file @ e451eef4
......@@ -55,6 +55,10 @@ usage: primerdesign [-h] (-l LOVD | --region REGION) [-p PADDING]
[-f FIELD] [-af ALLELE_FREQ] [-fq1 FQ1] [-fq2 FQ2] -R
REFERENCE --dbsnp DBSNP --primer3 PRIMER3 [--bwa BWA]
[--samtools SAMTOOLS] [--ignore-errors]
[--opt-primer-length OPT_PRIMER_LENGTH]
[--opt-gc-perc OPT_GC_PERC]
[--min-melting-temperature MIN_MELTING_TEMPERATURE]
[--max-melting-temperature MAX_MELTING_TEMPERATURE]
optional arguments:
-h, --help show this help message and exit
......@@ -77,11 +81,7 @@ optional arguments:
--strict Enable strict mode. Primers with products larger than
max product size will NOT be returned
--n_raw_primers N_RAW_PRIMERS
Amount of raw primers from primer3 output that will be
considered. By default, only the top 4 primers (in
each direction) will be considered. Increasing this
value does not mean more primers will be returned; it
simply increases the search space.
Legacy option. Will be ignored
--m13 Output primers with m13 tails
--m13-forward M13_FORWARD
Sequence of forward m13 tail
......@@ -104,6 +104,14 @@ optional arguments:
--bwa BWA Path to BWA exe
--samtools SAMTOOLS Path to samtools exe
--ignore-errors Ignore errors
--opt-primer-length OPT_PRIMER_LENGTH
Optimum primer length (default = 25)
--opt-gc-perc OPT_GC_PERC
Optimum primer GC percentage (default = 50)
--min-melting-temperature MIN_MELTING_TEMPERATURE
Minimum primer melting temperature (default = 58)
--max-melting-temperature MAX_MELTING_TEMPERATURE
Maximum primer melting temperature (default = 62)
```
......
prinia/design.py
View file @ e451eef4
......@@ -35,7 +35,8 @@ def get_sequence_fasta(region, reference=None, padding=True):
def run_primer3(sequence, region, padding=True,
primer3_script=PRIMER3_SCRIPT, product_size="200-450",
n_primers=4, prim3_exe=None):
n_primers=4, prim3_exe=None, **kwargs):
"""Run primer 3. All other kwargs will be passed on to primer3"""
if padding:
target_start = region.padding_left
target_len = len(sequence) - region.padding_left - region.padding_right
......@@ -45,7 +46,7 @@ def run_primer3(sequence, region, padding=True,
target = ",".join(map(str, [target_start, target_len]))
p3 = Primer3(prim3_exe, sequence, target, target)
p3 = Primer3(prim3_exe, sequence, target, target, **kwargs)
p3_out = p3.run()
primers = parse_primer3_output(p3_out)
return primers
......@@ -331,7 +332,9 @@ def chop_region(region, size):
def get_primer_from_region(region, reference, product_size, n_prims,
bwa_exe, samtools_exe, primer3_exe,
output_bam=None, dbsnp=None, field=None,
max_freq=None, strict=False, min_margin=10):
max_freq=None, strict=False, min_margin=10,
**prim_args):
"""**prim_args will be passed on to primer3"""
min_length, max_length = list(map(int, product_size.split("-")))
regions = chop_region(region, min_length)
......@@ -345,7 +348,8 @@ def get_primer_from_region(region, reference, product_size, n_prims,
sequence = get_sequence_fasta(reg, reference=reference)
raw_primers = run_primer3(sequence, reg, padding=True,
product_size=product_size,
n_primers=n_prims, prim3_exe=primer3_exe)
n_primers=n_prims, prim3_exe=primer3_exe,
**prim_args)
bam = aln_primers(raw_primers, bwa_exe=bwa_exe, samtools_exe=samtools_exe,
ref=reference, output_bam=output_bam)
prims = find_best_bwa(bam, region=reg, dbsnp=dbsnp, field=field, max_freq=max_freq)
......
prinia/primerdesign.py
View file @ e451eef4
......@@ -19,7 +19,9 @@ __author__ = 'ahbbollen'
def primers_from_lovd(lovd_file, padding, product_size, n_prims, reference,
bwa_exe, samtools_exe, primer3_exe, output_bam, dbsnp,
field, max_freq, m13=False, m13_f="", m13_r="",
strict=False, min_margin=10, ignore_errors=False):
strict=False, min_margin=10, ignore_errors=False,
**prim_args):
"""**prim_args will be passed on to primer3"""
variants = var_from_lovd(lovd_file)
primers = []
......@@ -32,7 +34,8 @@ def primers_from_lovd(lovd_file, padding, product_size, n_prims, reference,
output_bam=output_bam,
dbsnp=dbsnp, field=field,
max_freq=max_freq, strict=strict,
min_margin=min_margin)
min_margin=min_margin,
**prim_args)
primers.append(prims[0])
except NoPrimersException:
if ignore_errors:
......@@ -48,7 +51,9 @@ def primers_from_lovd(lovd_file, padding, product_size, n_prims, reference,
def primers_from_region(bed_path, padding, product_size, n_prims, reference,
bwa_exe, samtools_exe, primer3_exe, output_bam,
dbsnp, field, max_freq, m13=False, m13_f="",
m13_r="", strict=False, min_margin=10):
m13_r="", strict=False, min_margin=10,
**prim_args):
"""**prim_args will be passed on to primer3"""
regions = []
primers = []
with open(bed_path, "rb") as bed:
......@@ -64,7 +69,8 @@ def primers_from_region(bed_path, padding, product_size, n_prims, reference,
dbsnp=dbsnp, field=field,
max_freq=max_freq,
strict=strict,
min_margin=min_margin)
min_margin=min_margin,
**prim_args)
regions += regs
primers += prims
......@@ -139,10 +145,7 @@ def main():
parser.add_argument("--strict", help="Enable strict mode. "
"Primers with products larger than max product size will NOT be returned",
action="store_true")
parser.add_argument('--n_raw_primers', help="Amount of raw primers from primer3 output that will be considered. \
By default, only the top 4 primers (in each direction) will be considered. \
Increasing this value does not mean more primers \
will be returned; it simply increases the search space.",
parser.add_argument('--n_raw_primers', help="Legacy option. Will be ignored",
default=4, type=int)
parser.add_argument('--m13', action="store_true", help="Output primers with m13 tails")
......@@ -167,6 +170,19 @@ def main():
parser.add_argument("--ignore-errors", help="Ignore errors", action="store_true")
parser.add_argument("--opt-primer-length",
help="Optimum primer length (default = 25)",
type=int, default=25)
parser.add_argument("--opt-gc-perc",
help="Optimum primer GC percentage (default = 50)",
type=int, default=50)
parser.add_argument("--min-melting-temperature",
help="Minimum primer melting temperature (default = 58)",
type=int, default=58)
parser.add_argument("--max-melting-temperature",
help="Maximum primer melting temperature (default = 62)",
type=int, default=62)
args = parser.parse_args()
if not args.lovd and not args.region:
......@@ -181,6 +197,15 @@ def main():
if args.field and not args.allele_freq:
raise ValueError("Must set an allele frequency")
primer_args = {
"opt_primer_length": args.opt_primer_length,
"opt_gc_perc": args.opt_gc_perc,
"min_melting_t": args.min_melting_temperature,
"max_melting_t": args.max_melting_temperature,
"min_product_size": int(args.product_size.split("-")[0]),
"max_product_size": int(args.product_size.split("-")[1])
}
primers = []
if args.lovd and args.xml:
variants, primers = primers_from_lovd(args.lovd, args.padding,
......
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