Protein
Heterochromatin-associated protein MENT
Function
DNA-binding protein that promotes DNA condensation into transcriptionally inactive heterochromatin in terminally differentiated avian blood cells. Promotes tight packing of nucleosomes into spherical clusters by binding to linker DNA and subsequent oligomerization. Acts as a cysteine protease inhibitor towards CTSL (cathepsin L1) and CTSV (cathepsin L2), but does not inhibit serine proteases.
Similarity
Belongs to the serpin family. Ov-serpin subfamily.
Sequence
MEQVSASIGNFTVDLFNKLNETNRDKNIFFSPWSISSALALTYLAAKGSTAREMAEVLHFTEAVRAESSSVARPSRGRPKRRRMDPEHEQAENIHSGFKELLTAFNKPRNNYSLRSANRIYVEKTYALLPTYLQLSKKYYKAEPQKVNFKTAPEQSRKEINTWVEKQTESKIKNLLSSDDVKATTRLILVNAIYFKAEWEVKFQAEKTSIQPFRLSKNKSKPVKMMYMRDTFPVLIMEKMNFKMIELPYVKRELSMFILLPDDIKDGTTGLEQLERELTYERLSEWADSKMMTETLVDLHLPKFSLEDRIDLRDTLRNMGMTTAFTTNADFRGMTDKKDLAISKVIHQSFVAVDEKGTEAAAATAVIISFTTSVINHVLKFKVDHPFHFFIRHNKSKTILFFGRFCCPVE