Component of the DNA topoisomerase VI complex. Binds to DNA. Required for chromatin organization and progression of endoreduplication cycles. The loss of BIN4 activates the ATM- and ATR-dependent DNA damage responses in postmitotic cells and induces the ectopic expression of the mitotic G2/M-specific cyclin B1;1 gene in non-dividing cells. Protein BRASSINOSTEROID INSENSITIVE 4 K18P6.17 MID BIN4_ARATH BIN4 454 MSSSSREGSPDWLRSYEAPMTTSLLSLSSSDDDSPYRESEVISSLPLPDDDGDDIVVLETESVELLTRKNSETKVVTKQVSIEQVFSRKKKADASLNLEDSCAGKENGNNVDCEKLSSKHKDAQGGADSVWLVSSDSEPSSPIKQEVTVSTEKDADFVLEATEEEPAVKTVRKEKSPKTKSKSSRKTPKEGNSAQEILKTEDKDTDTTIAEQVTPEKSPKTKSKSSRKTPKEENCAQEILKTEDKDKDTDTDTIIAEEVTTDQKIKPSSGSSSRLPLVLSEKVNRTKVLVECEGDSIDLSGDMGAVGRVVVSDTTGDMYLDLKGTIYKSTIIPSRTFCVVNVGQTEAKIEAIMNDFIQLIPQSNVYEAETMVEGTLEGFTFESDDESNKNAKTAVKPADQSVGTEEETNTKAKPKAKAKGETVIGKKRGRPSKEKQPPAKKARNSAPKKPKAKK DNA-binding protein BIN4 Protein MIDGET At5g24630