Two new polypeptide antibiotics, CC-1014 and CC-1014B.

In the course of a screening program for antitumor antibiotics, two new antibiotics elaborated by Paecilomyces abruptus were isolated. One of these (CC-1014) has been demonstrated to be a polypeptide, and the other is most probably a polypeptide as its properties are very similar to those of CC-1014.