clathrin coat assembly protein, putative. similar to AP19 (associated protein 19), ATP binding / protein binding / protein kinase [Arabidopsis thaliana] (TAIR:AT2G17380.1); similar to clathrin adaptor complex small chain family protein [Arabidopsis thaliana] (TAIR:AT4G35410.2); similar to Os12g0207300 [Oryza sativa (japonica cultivar-group)] (GB:NP_001066387.1); similar to unknown [Populus trichocarpa] (GB:ABK93377.1); contains InterPro domain Longin-like; (InterPro:IPR011012); contains InterPro domain Clathrin adaptor, sigma subunit/coatomer, zeta subunit; (InterPro:IPR000804); contains InterPro domain Adaptor protein complex, sigma subunit