Contacts of the strand formed by residues 25 - 29 (chain A) in PDB entry 2CRZ
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 GLU 25 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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22A LYS* 2.7 57.4 + - + +
23A ALA* 3.5 2.5 + - - +
24A LYS* 1.3 100.6 + - - +
26A ILE* 1.3 66.8 + - - +
68A THR* 4.7 8.7 - - + -
69A VAL 3.0 10.8 - - - +
70A SER* 3.6 19.6 - - - +
71A SER 4.7 0.4 + - - +
72A LEU* 4.1 1.3 - - - +
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Residues in contact with ILE 26 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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17A LEU* 3.1 33.7 - - + -
21A PRO* 4.1 7.0 - - + -
22A LYS* 4.4 5.2 - - - +
25A GLU* 1.3 87.6 - - - +
27A GLN* 1.3 66.6 + - - +
28A LEU* 4.7 3.6 - - + -
68A THR* 3.4 2.3 - - - -
69A VAL* 2.7 42.1 + - + +
72A LEU* 3.6 17.0 - - + -
78A TYR* 5.3 1.1 - - + -
80A PHE* 4.0 19.5 - - + -
99A ILE* 4.2 26.2 - - + +
101A THR* 3.1 32.8 - - + +
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Residues in contact with GLN 27 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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17A LEU* 3.1 16.4 - - - +
18A GLN* 2.7 65.0 + - + +
19A GLY* 5.2 1.4 + - - -
20A ARG 4.3 12.7 + - - +
21A PRO* 5.0 2.0 - - - +
22A LYS* 4.3 23.6 - - + +
26A ILE* 1.3 75.0 - - - +
28A LEU* 1.3 58.9 + - - +
67A CYS 3.7 4.9 - - - +
68A THR* 3.4 30.3 - - + +
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Residues in contact with LEU 28 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15A PRO* 4.0 23.8 - - + +
16A ARG 3.6 3.4 - - - -
17A LEU* 4.2 4.9 - - - +
18A GLN* 3.5 12.0 + - - -
26A ILE* 4.7 5.2 - - + +
27A GLN* 1.3 81.5 - - - +
29A ARG* 1.3 64.1 + - - +
30A TRP* 3.8 17.9 - - + -
46A VAL* 4.4 14.4 - - + -
66A GLU* 3.5 1.4 - - - -
67A CYS* 3.1 29.1 + - - +
69A VAL* 3.7 28.9 - - + -
80A PHE* 3.8 17.3 - - + -
99A ILE* 3.4 33.4 - - + -
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Residues in contact with ARG 29 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16A ARG* 2.8 40.5 + - + +
18A GLN* 4.2 27.1 - - + +
28A LEU* 1.3 77.4 - - - +
30A TRP* 1.3 65.7 + - - +
65A VAL* 3.7 5.8 - - + -
66A GLU* 4.3 15.9 - - + +
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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