NAME
lastal5 - genome-scale comparison of biological sequences
SYNOPSIS
lastal5-plain [options] lastdb-name fasta-sequence-file(s)
DESCRIPTION
Find and align similar sequences.
Cosmetic options:
- -h, --help
-
show all options and their default settings, and exit
- -V, --version
-
show version information, and exit
- -v
-
be verbose: write messages about what lastal is doing
- -f
-
output format: TAB, MAF, BlastTab, BlastTab+ (default: MAF)
E-value options (default settings):
- -D
-
query letters per random alignment (1e+06)
- -E
-
maximum expected alignments per square giga (1e+18/D/refSize/numOfStrands)
Score options (default settings):
- -r
-
match score (2 if -M, else 6 if 1<=Q<=4, else 1 if DNA)
- -q
-
mismatch cost (3 if -M, else 18 if 1<=Q<=4, else 1 if DNA)
- -p
-
match/mismatch score matrix (protein-protein: BL62, DNA-protein: BL80)
- -X
-
N/X is ambiguous in: 0=neither sequence, 1=reference, 2=query, 3=both (0)
- -a
-
gap existence cost (DNA: 7, protein: 11, 1<=Q<=4: 21)
- -b
-
gap extension cost (DNA: 1, protein: 2, 1<=Q<=4: 9)
- -A
-
insertion existence cost (a)
- -B
-
insertion extension cost (b)
- -c
-
unaligned residue pair cost (off)
- -F
-
frameshift cost(s) (off)
- -x
-
maximum score drop for preliminary gapped alignments (z)
- -y
-
maximum score drop for gapless alignments (min[t*10, x])
- -z
-
maximum score drop for final gapped alignments (e-1)
- -d
-
minimum score for gapless alignments (min[e, 2500/n query letters per hit])
- -e
-
minimum score for gapped alignments
Initial-match options (default settings):
- -m
-
maximum initial matches per query position (10)
- -l
-
minimum length for initial matches (1)
- -L
-
maximum length for initial matches (infinity)
- -k
-
use initial matches starting at every k-th position in each query (1)
- -W
-
use "minimum" positions in sliding windows of W consecutive positions
Miscellaneous options (default settings):
- -s
-
strand: 0=reverse, 1=forward, 2=both (2 for DNA, 1 for protein)
- -S
-
score matrix applies to forward strand of: 0=reference, 1=query (0)
- -K
-
omit alignments whose query range lies in >= K others with > score (off)
- -C
-
omit gapless alignments in >= C others with > score-per-length (off)
- -P
-
number of parallel threads (1)
- -i
-
query batch size (64M if multi-volume, else off)
- -M
-
find minimum-difference alignments (faster but cruder)
- -T
-
type of alignment: 0=local, 1=overlap (0)
- -n
-
maximum gapless alignments per query position (infinity if m=0, else m)
- -N
-
stop after the first N alignments per query strand
- -R
-
lowercase & simple-sequence options (the same as was used by lastdb)
- -u
-
mask lowercase during extensions: 0=never, 1=gapless, 2=gapless+postmask, 3=always (2 if lastdb -c and Q!=pssm, else 0)
- -w
-
suppress repeats inside exact matches, offset by <= this distance (1000)
- -G
-
genetic code (1)
- -t
-
'temperature' for calculating probabilities (1/lambda)
- -g
-
'gamma' parameter for gamma-centroid and LAMA (1)
- -j
-
output type: 0=match counts, 1=gapless, 2=redundant gapped, 3=gapped,
-
4=column ambiguity estimates, 5=gamma-centroid, 6=LAMA, 7=expected counts (3)
- -J
-
score type: 0=ordinary, 1=full (1 for new-style frameshifts, else 0)
- -Q
-
input format: fastx, keep, sanger, solexa, illumina, prb, pssm
-
(default: fasta)
Split options:
- --split
-
do split alignment
- --splice
-
do spliced alignment
- --split-f=FMT
-
output format: MAF, MAF+
- --split-d=D
-
RNA direction: 0=reverse, 1=forward, 2=mixed (default: 1)
- --split-c=PROB
-
cis-splice probability per base (default: 0.004)
- --split-t=PROB
-
trans-splice probability per base (default: 1e-05)
- --split-M=MEAN
-
mean of ln[intron length] (default: 7.0)
- --split-S=SDEV
-
standard deviation of ln[intron length] (default: 1.7)
- --split-m=PROB
-
maximum mismap probability (default: 1.0)
- --split-s=INT
-
minimum alignment score (default: e OR e+t*ln[100])
- --split-n
-
write original, not split, alignments
- --split-b=B
-
maximum memory (default: 8T for split, 8G for spliced)