3a5PioLr31ds1ZdLnefW+fUlq8yT7VhyQAsBtMJqvCOu3cc1IXLs3G+L9PwZH+Ki88xQ3L3xleS8vPVdq4XIK2uAVxn2nD++l
f5qvz2upmfFYmfhOb9rd/wu4h4PfNmoXfbvvdmb8Kexy0X+u+um/RonDSZ74QXvSal4VNt98uvYK9iZP32+zn/H5t379MfPlG9Cc
WW, Chung CC, Kwok SY, et al. Laparoscopic sphincter--pouch reconstruction: five-year results. Ann
Hum Genet (2008) 124:263–270DOI 10.1007/s00439-008-0552-,. Powell · Steven Wiltshire · Gillian
平行式两种见P98。平行式:两条链的走向相同,N-CN-C反平行式:两条链的走向相反,N-CC-N反平行式的β-折叠比平行式的更稳定一条肽链回折后就可形成两条走向相反肽段,就可以形成反平行式的β-折叠