Contacts of the strand formed by residues 22 - 28 (chain B) in PDB entry 3A46
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with THR 22 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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20B GLY 4.8 1.0 + - - -
21B LYS* 1.3 76.5 - - - +
23B LEU* 1.3 61.8 + - - +
24B GLU* 3.6 5.7 + - + +
49B PRO* 3.6 31.2 - - + -
50B LEU 3.5 11.2 - - - +
51B LYS* 4.3 11.8 - - + +
102B PHE* 3.1 6.2 - - - -
103B ASP* 2.9 47.4 + - + +
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Residues in contact with LEU 23 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21B LYS 3.8 1.4 + - - -
22B THR* 1.3 71.8 - - - +
24B GLU* 1.3 60.0 + - - +
25B TYR 3.4 25.6 - - - +
26B ILE* 4.2 6.5 - - + -
44B PHE* 3.8 26.2 - - + -
48B LEU* 3.7 6.7 - - + +
49B PRO* 3.1 5.9 - - - +
50B LEU 2.8 36.1 + - - +
52B VAL* 4.7 0.4 - - + -
66B LEU* 3.8 25.4 - - + -
78B ILE* 4.2 9.6 - - + -
100B LEU* 3.9 24.7 - - + -
101B SER 3.5 9.4 - - - +
102B PHE* 3.6 24.9 - - + -
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Residues in contact with GLU 24 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22B THR* 3.6 8.8 + - + +
23B LEU* 1.3 77.2 - - - +
25B TYR* 1.3 62.6 + - + +
48B LEU* 3.5 20.4 - - - +
49B PRO* 4.2 17.2 - - + +
101B SER* 2.8 17.3 + - - +
102B PHE 3.8 8.7 - - - +
103B ASP* 3.1 42.9 - - - +
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Residues in contact with TYR 25 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23B LEU* 3.4 8.9 - - - +
24B GLU* 1.3 83.2 - - + +
26B ILE* 1.3 74.2 + - - +
27B ASP* 2.8 41.9 + - + -
41B TYR* 3.7 6.8 + - - -
45B ILE* 3.2 38.6 - - + +
48B LEU* 3.8 9.4 - - + -
99B VAL 4.5 0.7 - - - -
100B LEU* 3.5 0.2 - - - -
101B SER* 2.8 41.6 + - - -
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Residues in contact with ILE 26 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23B LEU* 4.2 8.1 - - + -
25B TYR* 1.3 87.6 - - - +
27B ASP* 1.3 67.1 + - - +
28B PHE* 4.4 19.3 - - + -
41B TYR* 2.9 31.0 + - + -
44B PHE* 3.3 31.6 - - + -
45B ILE* 3.8 17.3 - - + -
48B LEU* 3.1 27.4 - - + -
78B ILE* 5.4 1.6 - - + -
98B ALA* 5.1 1.8 - - + -
99B VAL 3.5 2.2 - - - -
100B LEU* 3.6 32.1 - - + -
119B PHE* 6.1 1.3 - - + -
121B PHE* 4.7 8.3 - - + -
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Residues in contact with ASP 27 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25B TYR* 2.8 43.4 + - + -
26B ILE* 1.3 72.7 - - - +
28B PHE* 1.3 62.4 + - - +
29B ILE* 3.3 13.8 + - + +
41B TYR* 4.2 2.7 + - - -
98B ALA* 3.2 2.6 - - - -
99B VAL* 2.7 52.5 + - + +
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Residues in contact with PHE 28 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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26B ILE* 4.4 9.9 - - + -
27B ASP* 1.3 71.7 + - - +
29B ILE* 1.3 62.9 + - - +
30B SER 3.3 4.5 - - - +
33B TYR* 3.4 44.6 - + + +
34B SER* 3.3 15.8 - - - +
38B PRO* 3.7 21.8 - - + -
41B TYR* 3.6 38.2 + + - -
97B ARG* 3.1 13.5 - - + +
98B ALA* 3.7 22.2 - - + -
119B PHE* 3.7 32.1 - + - -
121B PHE* 3.9 17.9 - + - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il