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← Primer database

Primer database

SAP18

Sin3A associated protein 18

Capra hircus

PublicationZhao et al. 2022

Sequences

Forward (5′→3′)

GGCCTGGCTATCGAGTAAAG

Reverse (5′→3′)

GGAGGGGTAATCGCTATGTC

Amplicon

127 bp

Primer Tm (°C)

ConditionsForwardReverseAverageΔ F/R
qPCR master mix61.561.061.30.5
Primer-BLAST default57.857.357.50.6

qPCR master mix: Owczarzy 2004/2008 · 250 nM primer · 50 mM Na⁺ · 3 mM Mg²⁺ · 0.8 mM dNTP

Primer-BLAST default: SantaLucia 1998 salt corr. · 50 nM primer · 50 mM Na⁺ · 1.5 mM Mg²⁺ · 0.6 mM dNTP

Bold, underlined base = 3′ end (polymerase extension point).

Primer QC

GC% · Forward

55.0%

GC% · Reverse

55.0%

Self-dimer ΔG · Fwd (any position)

-4.0 kcal/mol

Self-dimer ΔG · Fwd (3′ end)

0.7 kcal/mol

Self-dimer ΔG · Rev (any position)

-0.3 kcal/mol

Self-dimer ΔG · Rev (3′ end)

0.7 kcal/mol

Heterodimer ΔG (F×R, any position)

-1.5 kcal/mol

Heterodimer ΔG (F×R, 3′ end)

0.7 kcal/mol

ΔG at 37 °C · SantaLucia 1998 NN parameters · < −6 kcal/mol = significant dimer risk · "3′ end" is restricted to duplexes anchored at a primer's own 3′ terminal base (polymerase-extendable); "any position" is the most stable duplex anywhere in the primer. Estimated screening value. For comprehensive dimer analysis, validate with Primer3.

Source

PMID

36467654(Europe PMC)

Citation

Zhao et al. 2022

Genomic mapping

Ensembl gene

ENSCHIG00000016828 ↗

NCBI Gene ID

102169881

Assembly

ARS1

Cross-check

★ = Ensembl canonical transcript (reference model, not necessarily the most expressed isoform)

Showing: ENSCHIT00000024448 ★

129bp1116bp110bp23.5kb123bp3225bp157bp4FRPredicted from the amplicon's own GC%+length (von Ahsen et al. 2001, at the same qPCR buffer as the primer Tm above: 50 mM Na⁺ plus 3 mM Mg²⁺ less 0.8 mM dNTP, as a sodium equivalent), not the SantaLucia model used for primer Tm, which isn't valid at this length. A screening estimate for ranking amplicons — that relation was fitted on oligonucleotide duplexes, so applying it at amplicon length carries more error than its published ±1.9 °C, and it is not a melt-peak prediction.127 bp amplicon · predicted amplicon Tm 87.1 °C
SAP18 · ENSCHIT00000024448 · canonical✓ Exon-junction spanning · gDNA-safe by primer design

Off-target specificity

Specific

No paired forward+reverse off-target amplicon found against nt (whole genome/transcriptome). Screen requires >=2 total mismatches including >=2 within the last 5bp at the 3' end to clear a hit (NCBI Primer-BLAST-style stringency); hits with >=6 total mismatches are dropped as implausible.

Mean efficiency · Method unknown

1.959

from 1 measurement

Efficiency measurements

Ideal range:Dilution series 1.90–2.10·LinRegPCR 1.70–1.90·unknown method: not scored
EfficiencyR²MethodSourcePCR mixInstrumentAnnealingn
1.95995.9%
—Literature-reportedMethod not statedPMID 36467654————

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