Phosphomannose isomerase catalyzes the interconversion of fructose-6-phosphate and mannose-6-phosphate and plays a critical role in maintaining the supply of D-mannose derivatives, which are required for most glycosylation reactions. Mutations in the MPI gene were found in patients with carbohydrate-deficient glycoprotein syndrome, type Ib. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]
Transcription factors with Perturb-seq knockdown data for MPI. The Binding column indicates whether any binding evidence exists for this TF–gene pair (ChIP-seq or motif footprint peaks). The Mean coef is the average Perturb-seq regression coefficient across active gRNAs (positive = MPI upregulated upon KD; negative = downregulated). The Outlier column indicates whether this gene is in the top or bottom 5% of all TF knockdown effects.
| TF | Mean coef | Binding | Outlier | TF→Gene link |
|---|
Open chromatin peaks (ATAC-seq) in the genomic neighbourhood of MPI, linked by TSS proximity or chromatin conformation (Multiome / HiCAR). Each element overlaps at least one TF ChIP-seq binding site — the TFs column shows how many distinct TFs bind that element.
| Accessibility | Element | Dist. to TSS | Link type | TFs |
|---|---|---|---|---|
| chr15:74,598,102–74,598,966 | 291.6 kb | Distal (>10kb) Multiome | 689 | |
| chr15:74,614,343–74,616,348 | 274.3 kb | Distal (>10kb) Multiome | 1019 | |
| chr15:74,695,758–74,696,387 | 194.0 kb | Distal (>10kb) Multiome | 775 | |
| chr15:74,720,336–74,720,840 | 169.4 kb | Distal (>10kb) Multiome | 16 | |
| chr15:74,725,773–74,726,537 | 163.9 kb | Distal (>10kb) Multiome | 607 | |
| chr15:74,759,107–74,760,837 | 129.7 kb | Distal (>10kb) Multiome | 637 | |
| chr15:74,761,837–74,762,260 | 127.9 kb | Distal (>10kb) Multiome | 34 | |
| chr15:74,770,975–74,771,578 | 118.8 kb | Distal (>10kb) Multiome | 485 | |
| chr15:74,781,439–74,783,648 | 108.0 kb | Distal (>10kb) Multiome | 679 | |
| chr15:74,842,412–74,843,723 | 47.0 kb | Distal (>10kb) Multiome | 879 | |
| chr15:74,872,771–74,874,092 | 16.8 kb | Distal (>10kb) Multiome | 758 | |
| chr15:74,889,469–74,889,793 | 267 bp | At TSS | 417 | |
| chr15:74,889,894–74,890,629 | 11 bp | At TSS Multiome | 816 | |
| chr15:74,905,926–74,907,376 | 16.8 kb | Distal (>10kb) Multiome | 743 | |
| chr15:74,937,494–74,938,710 | 48.0 kb | Distal (>10kb) Multiome | 998 | |
| chr15:74,950,147–74,950,911 | 60.6 kb | Distal (>10kb) Multiome | 326 | |
| chr15:74,954,536–74,955,001 | 64.7 kb | Distal (>10kb) Multiome | 348 | |
| chr15:74,955,873–74,957,720 | 66.8 kb | Distal (>10kb) Multiome | 776 | |
| chr15:74,958,363–74,959,586 | 68.5 kb | Distal (>10kb) Multiome | 282 | |
| chr15:74,995,116–74,996,280 | 105.5 kb | Distal (>10kb) Multiome | 825 | |
| chr15:75,023,365–75,023,895 | 133.5 kb | Distal (>10kb) Multiome | 822 | |
| chr15:75,140,133–75,140,707 | 250.3 kb | Distal (>10kb) Multiome | 536 | |
| chr15:75,178,233–75,178,833 | 288.5 kb | Distal (>10kb) Multiome | 386 |
Genomic view of the MPI locus showing ATAC-seq accessibility and RNA-seq expression across the ESC → DE time course, together with TF binding peaks and element-to-TSS loop connections.