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<Asymmetric unit>
= <Biological unit>

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PDB ID1ypa  sequence information (FASTA format)   
DescriptorCHYMOTRYPSIN INHIBITOR 2 (CI2) MUTANT WITH SER 31 REPLACED BY ALA, GLU 33 REPLACED BY ALA, AND GLU 34 REPLACED BY ALA (S31A,E33A,E34A)
TitleDIRECT OBSERVATION OF BETTER HYDRATION AT THE N-TERMINUS OF AN ALPHA-HELIX WITH GLYCINE RATHER THAN ALANINE AS N-CAP
Functional KeywordsPROTEINASE INHIBITOR(CHYMOTRYPSIN)
Biological sourceHordeum vulgare
Total number of polymer chains1
Total molecular weight7181.6 (the details in Structural Details Page)
AuthorsHarpaz, Y. , Elmasry, N. , Fersht, A.R. , Henrick, K. (deposition date : 1993-01-10, release date : 1994-01-31)
Primary citationHarpaz, Y. , Elmasry, N. , Fersht, A.R. , Henrick, K.
Direct observation of better hydration at the N terminus of an alpha-helix with glycine rather than alanine as the N-cap residue.
Proc. Natl. Acad. Sci. U.S.A., 91:311 - 315, 1994.(PubMed : 8278384)  (DOI: 10.1073/pnas.91.1.311)
Experimental methodX-RAY DIFFRACTION ( 2.0[Å] )
Other Database Information
Yorodumi , CATH , CE , FSSP , SCOP , VAST , UniProt ( P01053 ) , eF-site , PISA