Contacts of the helix formed by residues 324 - 330 (chain A) in PDB entry 3MI9
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 LEU 324 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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121A PHE* 5.2 0.7 - - + -
125A GLU* 3.5 46.7 - - + +
128A ARG* 4.3 6.3 - - + -
129A VAL* 3.8 21.5 - - + -
132A MET* 3.8 14.6 - - + -
157A ILE* 4.1 24.0 - - + -
161A GLY* 3.8 32.0 + - - +
323A ASP* 1.3 75.8 - - - +
325A LYS* 1.3 61.5 + - - +
326A GLY 3.4 2.0 - - - -
327A MET* 4.1 15.3 - - + +
328A LEU* 3.0 30.8 + - + +
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Residues in contact with LYS 325 (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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323A ASP* 2.9 30.5 + - - +
324A LEU* 1.3 75.7 - - - +
326A GLY* 1.3 66.9 + - - +
328A LEU* 3.2 9.0 + - - +
329A SER* 3.0 21.0 + - - -
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Residues in contact with GLY 326 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
125A GLU* 3.3 9.5 + - - -
323A ASP* 4.9 0.8 + - - -
324A LEU 3.4 0.4 - - - -
325A LYS* 1.3 75.7 - - - +
327A MET* 1.3 66.4 + - - +
329A SER* 2.7 29.7 + - - -
330A THR* 3.3 7.7 + - - +
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Residues in contact with MET 327 (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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113A LEU* 3.7 25.8 - - + -
119A VAL* 3.8 14.8 - - + +
120A LYS 3.4 26.0 - - - +
121A PHE* 3.3 36.1 - - + -
125A GLU* 2.6 25.6 + - + +
157A ILE* 4.2 5.2 - - + -
324A LEU* 3.8 25.8 + - + +
325A LYS 3.5 0.4 - - - -
326A GLY* 1.3 71.5 - - - +
328A LEU* 1.3 89.4 + - + +
330A THR* 2.6 22.2 + - - -
331A HIS* 3.7 3.7 + - - -
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Residues in contact with LEU 328 (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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108A HIS* 3.9 29.2 - - + +
113A LEU* 5.1 0.7 - - + -
157A ILE* 5.0 1.8 - - + -
158A THR 3.8 12.3 - - - +
159A ARG* 3.1 29.6 - - - +
160A ASP 4.5 0.4 - - - -
161A GLY* 3.8 13.2 - - - +
324A LEU* 3.0 26.3 + - + +
325A LYS* 3.6 7.2 - - - +
326A GLY 2.9 1.2 + - - -
327A MET* 1.3 104.4 - - + +
329A SER* 1.3 59.5 + - - +
331A HIS* 3.5 20.9 + - + +
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Residues in contact with SER 329 (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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325A LYS 3.0 10.2 + - - -
326A GLY* 2.7 26.4 + - - -
328A LEU* 1.3 70.1 - - - +
330A THR* 1.3 64.7 + - - +
331A HIS 3.1 6.7 - - - +
332A LEU* 3.3 20.4 - - - +
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Residues in contact with THR 330 (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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118A LEU 4.1 9.9 - - - +
119A VAL* 3.3 7.4 - - - +
120A LYS* 3.0 46.6 + - + +
326A GLY 3.9 10.5 - - - +
327A MET 2.6 20.3 + - - -
329A SER* 1.3 78.0 - - - +
331A HIS* 1.3 61.4 + - - +
332A LEU* 3.4 15.0 + - - +
338A TYR* 3.7 10.6 - - - -
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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