PRR21 GI:124249376 proline rich 21 1 mhacsstalh prpfihgfsf ttflqqlfph gsstalhpwp fihgsspmal 50 51 hprlfthgps stalhpcpft hgsspmslhp rlfthspssm plhprpfvha 100 101 ssptalrpcl fthgpssmpl hprpfvhass ptalppclft hgpssmplhp 150 151 rpflhasspt alppclfthg pssmplhprp fvhassptal rpclfthgps 200 201 smplhprpfv hassptalpp clfthgpssm plhprpfvha ssptalrpcl 250 251 fthgpssmpl hprpflhass ptalrpclft hgpssmplhp rpfvhasspt 300 301 alrpclfthg pssmplhprp fvhassstsl hprpfihass skslhlrlfs 350 351 hssclvgfsq qgnvlllsar atfntcllvs nmyfliisy