Pulmonary surfactant-associated protein B (SP-B) (18 kDa pulmonary-surfactant protein) (6 kDa protein) (Pulmonary surfactant-associated proteolipid SPL(Phe))
1_MAESH 6_ LLQWL 11_ LLLLP 16_ TLCGP 21_ GTAAW 26_ TTSSL 31_ ACAQG 36_ PEFWC 41_ QSLEQ 46_ ALQCR 51_ ALGHC 56_ LQEVW 61_ GHVGA 66_ DDLCQ 71_ ECEDI 76_ VHILN 81_ KMAKE 86_ AIFQD 91_ TMRKF 96_ LEQEC 101_ NVLPL 106_ KLLMP 111_ QCNQV 116_ LDDYF 121_ PLVID 126_ YFQNQ 131_ TDSNG 136_ ICMHL 141_ GLCKS 146_ RQPEP 151_ EQEPG 156_ MSDPL 161_ PKPLR 166_ DPLPD 171_ PLLDK 176_ LVLPV 181_ LPGAL 186_ QARPG 191_ PHTQD 196_ LSEQQ 201_ FPIPL 206_ PYCWL 211_ CRALI 216_ KRIQA 221_ MIPKG 226_ ALAVA 231_ VAQVC 236_ RVVPL 241_ VAGGI 246_ CQCLA 251_ ERYSV 256_ ILLDT 261_ LLGRM 266_ LPQLV 271_ CRLVL 276_ RCSMD 281_ DSAGP 286_ RSPTG 291_ EWLPR 296_ DSECH 301_ LCMSV 306_ TTQAG 311_ NSSEQ 316_ AIPQA 321_ MLQAC 326_ VGSWL 331_ DREKC 336_ KQFVE 341_ QHTPQ 346_ LLTLV 351_ PRGWD 356_ AHTTC 361_ QALGV 366_ CGTMS 371_ SPLQC 376_IHSPD
1: Pulmonary surfactant-associated proteins promote alveolar stability by lowering the surface tension at the air-liquid interface in the peripheral air spaces. SP-B increases the collapse pressure of palmitic acid to nearly 70 millinewtons per meter