<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8"><span style="-webkit-text-size-adjust: auto;">Dear Colleagues, </span><br><div style="-webkit-text-size-adjust: auto;">We draw your attention to our call for Topical review articles for Acta Cryst F Structural Biology Communications described here:-</div><div style="-webkit-text-size-adjust: auto;"><a href="https://journals.iucr.org/f/issues/2021/11/00/me6156/index.html">https://journals.iucr.org/f/issues/2021/11/00/me6156/index.html</a></div><div style="-webkit-text-size-adjust: auto;">We welcome your proposals.</div><div style="-webkit-text-size-adjust: auto;">Best wishes,</div><div style="-webkit-text-size-adjust: auto;">John, Mark and Janet <br><br><div dir="ltr">John Helliwell, Mark van Raaj and Janet Newman</div></div><div dir="ltr"><div><br></div><div><div><br></div></div><div><br></div></div></div></div><br><br><div dir="ltr">Emeritus Professor John R Helliwell DSc<div><br></div><div><div><br></div></div><div><br></div></div></body></html>