label: a di-trans,poly-cis-dolichyl beta-D-mannosyl phosphate + L-seryl-[protein] <=> 3-O-(alpha-D-mannosyl)-L-seryl-[protein] + a di-trans,poly-cis-dolichyl phosphate + H(+)
label_lc: a di-trans,poly-cis-dolichyl beta-d-mannosyl phosphate + l-seryl-[protein] <=> 3-o-(alpha-d-mannosyl)-l-seryl-[protein] + a di-trans,poly-cis-dolichyl phosphate + h(+)