http://www.alphaknockout.com/ Mouse Cox7a2l Conditional Knockout Project (CRISPR/Cas9)

Objective: To create a Cox7a2l conditional knockout Mouse model (C57BL/6N) by CRISPR/Cas-mediated genome engineering.

Strategy summary: The Cox7a2l (NCBI Reference Sequence: NM_001159529 ; Ensembl: ENSMUSG00000024248 ) is located on Mouse 17. 4 exons are identified , with the ATG start codon in exon 1 and the TGA stop codon in exon 4 (Transcript: ENSMUST00000167741). Exon 2~4 will be selected as conditional knockout region (cKO region). Deletion of this region should result in the loss of function of the Mouse Cox7a2l gene. To engineer the targeting vector, homologous arms and cKO region will be generated by PCR using BAC clone RP23-183D2 as template. Cas9, gRNA and targeting vector will be co-injected into fertilized eggs for cKO Mouse production. The pups will be genotyped by PCR followed by sequencing analysis. Note: Mice homozygous for a null allele exhibit decreased running capacity, decrease in metabolic rate and mitochondrial oxidative capacity, whitened brown adipose tissue and severe cold sensitivity. Mice homozygous for an allele encoding the short isoform exhibit higher succinate or pyruvate and malate-driven respiration rates

Exon 2~4 is not frameshift exon, and covers 82.2% of the coding region. The size of intron 1 for 5'-loxP site insertion: 9975 bp.

The size of effective cKO region: ~3065 bp. The cKO region does not have any other known gene.

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Overview of the Targeting Strategy

Wildtype allele 5' gRNA region gRNA region 3'

1 2 3 4 Targeting vector

Targeted allele

Constitutive KO allele (After Cre recombination)

Legends Exon of mouse Cox7a2l Homology arm cKO region loxP site

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Overview of the Dot Plot Window size: 10 bp

Forward Reverse Complement

Sequence 12

Note: The sequence of homologous arms and cKO region is aligned with itself to determine if there are tandem repeats. Tandem repeats are found in the dot plot matrix. It may be difficult to construct this targeting vector.

Overview of the GC Content Distribution Window size: 300 bp

Sequence 12

Summary: Full Length(8795bp) | A(25.78% 2267) | C(21.1% 1856) | G(24.88% 2188) | T(28.24% 2484)

Note: The sequence of homologous arms and cKO region is analyzed to determine the GC content. No significant high GC-content region is found. So this region is suitable for PCR screening or sequencing analysis.

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BLAT Search Results (up)

QUERY SCORE START END QSIZE IDENTITY CHROM STRAND START END SPAN ------browser details YourSeq 3000 1 3000 3000 100.0% chr17 - 83504479 83507478 3000 browser details YourSeq 199 1605 1861 3000 95.9% chr4 - 83341112 83341581 470 browser details YourSeq 196 1671 2248 3000 90.9% chr7 - 30802683 30803162 480 browser details YourSeq 194 1605 1861 3000 96.3% chr4 - 129296934 129297454 521 browser details YourSeq 193 1646 1861 3000 94.0% chr1 + 173383761 173383960 200 browser details YourSeq 192 1621 1857 3000 98.5% chrX - 60636291 60636578 288 browser details YourSeq 191 1620 1861 3000 97.1% chr9 - 106259412 106259715 304 browser details YourSeq 191 1598 1858 3000 97.1% chr12 - 76258084 76258744 661 browser details YourSeq 190 1672 1861 3000 100.0% chr2 + 60494900 60495089 190 browser details YourSeq 189 1672 2124 3000 88.3% chr5 - 105765605 105765856 252 browser details YourSeq 188 1673 1860 3000 100.0% chr2 - 18088188 18088375 188 browser details YourSeq 187 1671 1861 3000 99.0% chr17 - 60461811 60462001 191 browser details YourSeq 187 1672 1864 3000 98.5% chr1 - 171873700 171873892 193 browser details YourSeq 187 1672 1867 3000 98.0% chr5 + 144081756 144081963 208 browser details YourSeq 186 1672 1861 3000 99.0% chr5 - 103641491 103641680 190 browser details YourSeq 186 1671 1860 3000 99.0% chrX + 166055876 166056065 190 browser details YourSeq 186 1671 1864 3000 98.0% chr7 + 41454155 41454348 194 browser details YourSeq 186 1672 1861 3000 99.0% chr2 + 70997981 70998170 190 browser details YourSeq 185 1672 1860 3000 99.0% chr7 - 57101389 57101577 189 browser details YourSeq 185 1672 2029 3000 91.1% chr12 - 86182885 86183216 332

Note: The 3000 bp section upstream of Exon 2 is BLAT searched against the genome. No significant similarity is found.

BLAT Search Results (down)

QUERY SCORE START END QSIZE IDENTITY CHROM STRAND START END SPAN ------browser details YourSeq 3000 1 3000 3000 100.0% chr17 - 83498934 83501933 3000 browser details YourSeq 493 529 1270 3000 92.1% chr4 - 32810917 32811518 602 browser details YourSeq 486 529 1638 3000 90.6% chr9 - 22186850 22187871 1022 browser details YourSeq 480 529 1272 3000 90.5% chr12 - 28681654 28682252 599 browser details YourSeq 480 529 1270 3000 91.3% chr1 - 33816376 33816975 600 browser details YourSeq 472 524 1268 3000 91.4% chr11 + 5844496 5845060 565 browser details YourSeq 469 529 1273 3000 90.0% chrX + 8120115 8120717 603 browser details YourSeq 465 529 1270 3000 90.8% chr17 - 16911336 16911926 591 browser details YourSeq 465 529 1270 3000 90.4% chr15 + 82432656 82433252 597 browser details YourSeq 465 529 1270 3000 90.5% chr13 + 120213915 120214503 589 browser details YourSeq 464 529 1270 3000 91.3% chr18 - 38357179 38357761 583 browser details YourSeq 460 529 1270 3000 91.2% chr7 - 11717646 11718223 578 browser details YourSeq 460 529 1270 3000 90.8% chr12 - 3203128 3203717 590 browser details YourSeq 457 529 1270 3000 88.1% chrX - 110266420 110267018 599 browser details YourSeq 457 529 1270 3000 90.3% chr6 + 37804896 37805499 604 browser details YourSeq 455 529 1270 3000 90.6% chr17 - 23642472 23643057 586 browser details YourSeq 454 529 1268 3000 90.5% chr4 - 20302077 20302661 585 browser details YourSeq 453 529 1270 3000 91.2% chr19 + 21321365 21321950 586 browser details YourSeq 449 529 1270 3000 89.8% chrX - 144303075 144303672 598 browser details YourSeq 447 529 1270 3000 90.2% chr18 + 6416925 6417512 588

Note: The 3000 bp section downstream of Exon 4 is BLAT searched against the genome. No significant similarity is found.

Page 4 of 7 http://www.alphaknockout.com/ Gene and protein information: Cox7a2l subunit 7A2 like [ Mus musculus (house mouse) ] Gene ID: 20463, updated on 27-Aug-2019

Gene summary

Official Symbol Cox7a2l provided by MGI Official Full Name cytochrome c oxidase subunit 7A2 like provided by MGI Primary source MGI:MGI:106015 See related Ensembl:ENSMUSG00000024248 Gene type protein coding RefSeq status VALIDATED Organism Mus musculus Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus Also known as EB1; SIG81; COX7AR; COX7RP; SIG-81; Silg81 Expression Ubiquitous expression in bladder adult (RPKM 103.0), heart adult (RPKM 81.6) and 28 other tissues See more Orthologs human all

Genomic context

Location: 17; 17 E4 See Cox7a2l in Genome Data Viewer

Exon count: 4

Annotation release Status Assembly Chr Location

108 current GRCm38.p6 (GCF_000001635.26) 17 NC_000083.6 (83501917..83514333, complement)

Build 37.2 previous assembly MGSCv37 (GCF_000001635.18) 17 NC_000083.5 (83901257..83913673, complement)

Chromosome 17 - NC_000083.6

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Transcript information: This gene has 4 transcripts

Gene: Cox7a2l ENSMUSG00000024248

Description cytochrome c oxidase subunit 7A2 like [Source:MGI Symbol;Acc:MGI:106015] Gene Synonyms COX7AR, COX7RP, EB1, SIG-81, SIG81 Location Chromosome 17: 83,501,918-83,517,330 reverse strand. GRCm38:CM001010.2 About this gene This gene has 4 transcripts (splice variants), 240 orthologues, 2 paralogues, is a member of 1 Ensembl protein family and is associated with 1 phenotype. Transcripts

Name Transcript ID bp Protein Translation ID Biotype CCDS UniProt Flags

Cox7a2l- ENSMUST00000167741.8 1129 134aa ENSMUSP00000131584.1 Protein coding CCDS50194 E9PZS8 TSL:1 202 GENCODE basic

Cox7a2l- ENSMUST00000025095.8 1076 111aa ENSMUSP00000025095.7 Protein coding CCDS28995 Q3UDK5 TSL:1 201 Q61387 GENCODE basic APPRIS P1

Cox7a2l- ENSMUST00000235085.1 903 No - Retained - - - 204 protein intron

Cox7a2l- ENSMUST00000234258.1 592 No - lncRNA - - - 203 protein

35.41 kb Forward strand

83.50Mb 83.51Mb 83.52Mb Contigs < AC164634.3

Genes (Comprehensive set... < Cox7a2l-201protein coding

< Cox7a2l-202protein coding

< Cox7a2l-204retained intron

< Cox7a2l-203processed transcript

Regulatory Build

83.50Mb 83.51Mb 83.52Mb Reverse strand 35.41 kb

Regulation Legend CTCF Enhancer Open Chromatin Promoter Promoter Flank

Gene Legend Protein Coding

merged Ensembl/Havana

Non-Protein Coding

processed transcript

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Transcript: ENSMUST00000025095

< Cox7a2l-201protein coding

Reverse strand 12.41 kb

ENSMUSP00000025... Transmembrane heli... Superfamily Cytochrome c oxidase, subunit VIIa superfamily

Pfam Cytochrome c oxidase subunit VII

PIRSF Cytochrome c oxidase subunit VIIa-related, mitochondrial PANTHER Cytochrome c oxidase subunit VIIa-related, mitochondrial

Cytochrome c oxidase subunit VIIa, metazoa Gene3D Cytochrome c oxidase, subunit VIIa superfamily

CDD Cytochrome c oxidase subunit VIIa, metazoa

All sequence SNPs/i... Sequence variants (dbSNP and all other sources)

Variant Legend

inframe insertion missense variant splice region variant synonymous variant

Scale bar 0 10 20 30 40 50 60 70 80 90 100 111

We wish to acknowledge the following valuable scientific information resources: Ensembl, MGI, NCBI, UCSC, VectorBuilder.

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