def _children_prot(hog_off, hog_tab, cprot_buff):
    """
    simply collect the proteins of a HOG
    """
    hog_ent = hog_tab[hog_off]
    cprot_off = hog_ent['ChildrenProtOff']
    return cprot_buff[cprot_off:cprot_off + hog_ent['ChildrenProtNum']]
