Kidney function tests at the crossroads

ARF1 at the crossroads of podosome construction and function

Podosomes are actin-based proteolytic microdomains of the plasma membrane found in cells that travel across tissues. In this issue, Rafiq et al. (2017. J. Cell Biol. https://doi.org/10.1083/jcb.201605104) reveal that the small guanosine triphosphatase ARF1, a well-known orchestrator of membrane traffic at the Golgi, regulates podosome formation, maintenance, and function.

Editorial. At the crossroads.

Colombia at the Crossroads

ove rv i ew The In s ti tute for the Stu dy of Di p l om acy hosted the spring session of the Sch l e s i n ger Work i n g Group on the topic of s tra tegic su rprise in Co l ombi a . Af ter a pre s en t a ti on on four po ten tial scen a rios that may face Co l om bia (see next page ) , S ch l e s i n ger Working Group core mem bers and Co l om bia specialists ex a m i n ed the key factors dri...

Immunology at the crossroads

tell us stories that live in our minds long after we read their words. After 20 years of training some 200 graduate students, I can report some progress in convincing editors that properly trained scientists can do the job of reporting on science for general readers. However—and this is a big however— editors still insist that these scientists must, no matter what their qualification in science...

Scribble at the crossroads

Although proteins involved in determining apical-basal cell polarity have been directly linked to tumorigenesis, their precise roles in this process remain unclear. A recent report in BMC Biology clarifies the signaling pathways that control cell polarity, proliferation and apoptosis downstream of the tumor suppressor and apical-basal polarity determinant Scribble.