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9EN2

Crystal structure of the metalloproteinase enhancer PCPE-1 complexed with nanobodies VHH-H4 and VHH-I5

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Procollagen C-endopeptidase enhancer 1polymer30232437.41UniProt (Q15113)
Pfam (PF00431)
Homo sapiens (human)Procollagen COOH-terminal proteinase enhancer 1,PCPE-1,Procollagen C-proteinase enhancer 1,Type 1 procollagen C-proteinase enhancer protein,Type I procollagen COOH-terminal proteinase enhancer
2B
(B)
VHH-H4polymer15416608.41Lama glama
3C
(C)
VHH-I5polymer14415628.61Lama glama
4D, E
(A)
CALCIUM IONnon-polymer40.12Chemie (CA)
5F, G
(B, C)
GLYCEROLnon-polymer92.12Chemie (GOL)
6H, I, J
(A, B, C)
waterwater18.0365Chemie (HOH)
Sequence modifications
A: 25 - 277 (UniProt: Q15113)
PDBExternal DatabaseDetails
Met -21-initiating methionine
Gly -20-expression tag
Ile -19-expression tag
Leu -18-expression tag
Pro -17-expression tag
Ser -16-expression tag
Pro -15-expression tag
Gly -14-expression tag
Met -13-expression tag
Pro -12-expression tag
Ala -11-expression tag
Leu -10-expression tag
Leu -9-expression tag
Ser -8-expression tag
Leu -7-expression tag
Val -6-expression tag
Ser -5-expression tag
Leu -4-expression tag
Leu -3-expression tag
Ser -2-expression tag
Val -1-expression tag
Leu 0-expression tag
Leu 1-expression tag
Met 2-expression tag
Gly 3-expression tag
Cys 4-expression tag
Val 5-expression tag
Ala 6-expression tag
Glu 7-expression tag
Thr 8-expression tag
Gly 9-expression tag
His 10-expression tag
His 11-expression tag
His 12-expression tag
His 13-expression tag
His 14-expression tag
His 15-expression tag
Leu 16-expression tag
Glu 17-expression tag
Val 18-expression tag
Leu 19-expression tag
Phe 20-expression tag
Gln 21-expression tag
Gly 22-expression tag
Pro 23-expression tag
Ala 24-expression tag
Ala 31Thr 31conflict
Leu 278-expression tag
Gly 279-expression tag
Thr 280-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains3
Total formula weight64674.5
Non-Polymers*Number of molecules4
Total formula weight264.3
All*Total formula weight64938.9
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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