With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
By
binding
to
the
H3K27me2/3-tagged
nucleosome
,
PRC1
(
also
a
complex
of
PcG
family
proteins
)
catalyzes
the
mono-ubiquitinylation
of
histone
H2A
at
lysine
119
(
H2AK119Ub1
)
,
blocking
RNA
polymerase
II
activity
and
resulting
in
transcriptional
suppression
.
By:O
binding:O
to:O
the:O
H3K27me2/3-tagged:other-biologything
nucleosome:other-biologything
,:O
PRC1:other-biologything
(:O
also:O
a:O
complex:O
of:O
PcG:other-biologything
family:O
proteins:O
):O
catalyzes:O
the:O
mono-ubiquitinylation:O
of:O
histone:O
H2A:other-biologything
at:other-biologything
lysine:other-biologything
119:other-biologything
(:O
H2AK119Ub1:other-biologything
):O
,:O
blocking:O
RNA:other-biologything
polymerase:other-biologything
II:other-biologything
activity:O
and:O
resulting:O
in:O
transcriptional:O
suppression:O
.:O