eF-site ID 1mgr-A
PDB Code 1mgr
Chain A

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Title Crystal structure of RNase Sa3,cytotoxic microbial ribonuclease
Classification HYDROLASE
Compound Guanyl-specific ribonuclease Sa3
Source Streptomyces aureofaciens (RNS3_STRAU)
Sequence A:  VKAVGRVCYSALPSQAHDTLDLIDEGGPFPYSQDGVVFQN
REGLLPAHSTGYYHEYTVITPGSPTRGARRIITGQQWQED
YYTADHYASFRRVDFAC
Description (1)  Guanyl-specific ribonuclease Sa3 (E.C.3.1.27.3)


Functional site

1) chain A
residue 30
type
sequence P
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

2) chain A
residue 31
type
sequence F
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

3) chain A
residue 57
type
sequence E
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

4) chain A
residue 68
type
sequence R
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

5) chain A
residue 72
type
sequence R
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

6) chain A
residue 88
type
sequence H
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

7) chain A
residue 89
type
sequence Y
description BINDING SITE FOR RESIDUE SO4 A 100
source : AC1

8) chain A
residue 57
type ACT_SITE
sequence E
description Proton acceptor
source Swiss-Prot : SWS_FT_FI1

9) chain A
residue 88
type ACT_SITE
sequence H
description Proton donor
source Swiss-Prot : SWS_FT_FI2


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