>sp|Q31RK2|CCMK4_SYNE7 Carboxysome shell protein CcmK4 OS=Synechococcus elongatus (strain ATCC 33912 / PCC 7942 / FACHB-805) OX=1140 GN=ccmK4 PE=1 SV=1 MSQQAIGSLETKGFPPILAAADAMVKAGRITIVSYMRAGSARFAVNIRGDVSEVKTAMDA GIEAAKNTPGGTLETWVIIPRPHENVEAVFPIGFGPEVEQYRLSAEGTGSGRR